《纳米研究》2022年第1期目录

Original 编辑部 NanoResearch

Flagship Review

Adaptive iron-based magnetic nanomaterials of high performance for biomedical applications

Ning Gu^1,2,3,*, Zuoheng Zhang^1,2, and Yan Li^1,2

¹Southeast University, China

²Suzhou Key Laboratory of Biomaterials and Technologies, China

³Nanjing Medical University, China

The efforts for the preparation of high-performance magnetic nanoparticles (MNPs), the methods and effects of their performance regulation, and the special properties of MNPs applied in biomedical detection, diagnosis, and treatment were summarized.

1–17

Review Articles

Recent development of Au arched Pt nanomaterials as promising electrocatalysts for methanol oxidation reaction

Wenhua Lou, Asad Ali, and Pei Kang Shen^*

Guangxi University, China

Profiting from high oxidation potential and the unique electronic structure, Au introduced Pt-based nanomaterials show a broad application prospect, especially as anode catalyst of fuel cell.

18–37

Applications of single-atom catalysts

Qiaoqiao Zhang and Jingqi Guan^*

Jilin University, China

In this review, we summarized systematically the preparation methods, characterization technologies, versatile applications, and structure–property relationships of single-atom catalysts with single- or dual-atom motifs in organic synthesis, environmental remediation, energy conversion, and biomedicine.

38–70

Nucleobase, nucleoside, nucleotide, and oligonucleotide coordinated metal ions for sensing and biomedicine applications

Jiaojiao Zhou^1,2, Heyou Han^1,*, and Juewen Liu^2,*

¹ Huazhong Agricultural University, China

² University of Waterloo, Canada

This review describes the strategies for the synthesis of nanoparticles, nanofibers, and hydrogels through coordination assembly of nucleotides or DNA and metal ions, and introduces their diverse applications in biosensing, drug delivery, catalysis, enzyme immobilization, and surface modification.

71–84

Recent advances on interface engineering of perovskite solar cells

Wenjing Yu¹, Xiaoran Sun¹, Mu Xiao², Tian Hou¹, Xu Liu³, Bolin Zheng³, Hua Yu¹, Meng Zhang^1,3,*, Yuelong Huang^1,*, and Xiaojing Hao^3,*

¹ Southwest Petroleum University, China

² The University of Queensland, Australia

³ University of New South Wales, Australia

This review summarizes the latest progress on interface engineering of perovskite solar cells (PSCs), focusing on their impact on defect passivation, inhibiting ion migration, morphological control, and band-level alignment. Future perspectives and strategies of interface engineering towards large-scale application of PSCs are highlighted.

85–103

Two-dimensional selenium and its composites for device applications

Zhe Shi^1,2, Hongqiao Zhang³, Karim Khan², Rui Cao², Kaikai Xu^3,*, and Han Zhang^2,*

¹ Xuzhou University of Technology, China

²Shenzhen University, China

³University of Electronic Science and Technology of China, China

The synthesis methods, properties, structure, academic and engineering applications of two-dimensional Se and its composites are reviewed.

104–122

p-/n-Type modulation of 2D transition metal dichalcogenides for electronic and optoelectronic devices

Songyu Li¹, Yang Ma², Nabonswende Aida Nadege Ouedraogo², Famin Liu^1,*, Congya You², Wenjie Deng², and Yongzhe Zhang^2,*

¹ Beihang University, China

² Beijing University of Technology, China

p-/n-Type modulation of two-dimensional layered transition metal dichalcogenides (TMDCs) is one of the key points for the device applications. Here, diverse p-/n-type modulation strategies of TMDCs are reviewed including intrinsic defect tailoring, substitutional doping, surface charge transfer, chemical intercalation, electrostatic modulation, and dielectric interface engineering. Furthermore, various approaches for the device applications in electronics and optoelectronics are introduced.

123–144

Research Articles

Docking MOF crystals on graphene support for highly selective electrocatalytic peroxide production

Xiaofeng Huang¹, Peter Oleynikov¹, Hailong He¹, Alvaro Mayoral¹, Linqin Mu², Feng Lin², and Yue-Biao Zhang^1,*

¹ShanghaiTech University, China

² Virginia Tech, USA

Overcoming significant lattice and symmetry mismatch, metal−organic frameworks (MOFs) crystals have been co-facially docked on nitrogen doped graphene support. This interfacial alignment modulates the electron density of active cobalt center, enabling highly selective electrochemical reduction of oxygen to peroxide via a two-electron mechanism.

145–152

Albumin mediated reactive oxygen species scavenging and targeted delivery of methotrexate for rheumatoid arthritis therapy

Jing Zhong, Qin Zhang, Zheng Zhang, Kexin Shi, Yuanchen Sun, Teng Liu, Jun Lin^*, and Kai Yang^*

Soochow University, China

We designed HSA-based nanocarriers for co-loading superoxide dismutase (SOD) enzyme and methotrexate (MTX) for the treatment of rheumatoid arthritis.

153–161

Strengthen metal-oxygen covalency of CoFe-layered double hydroxide for efficient mild oxygen evolution

Dazhong Zhong¹, Tan Li², Dong Wang¹, Lina Li³, Jiancheng Wang¹, Genyan Hao¹, Guang Liu¹, Qiang Zhao^1,*, and Jinping Li^1,*

¹Taiyuan University of Technology, China

² South China University of Technology, China

³ Shanghai Advanced Research Institute, China

Partially oxidized CoFe-layered double hydroxide with enhanced metal-oxygen (M-O) covalency is prepared. It shifts the oxygen evolution reaction (OER) mechanism to the lattice oxygen oxidation mechanism and also promotes the rate-limiting deprotonation, providing superior OER performance.

162–169

High-performance flexible self-powered strain sensor based on carbon nanotube/ZnSe/CoSe₂ nanocomposite film electrodes

Qiufan Wang¹, Jiaheng Liu¹, Xuan Ran¹, Daohong Zhang^1,*, Guozhen Shen^2,*, and Menghe Miao³

¹ South Central University for Nationalities, China

²Institution of Semiconductors, Chinese Academy of Sciences, China

³ CSIRO Manufacturing, Australia

A highly flexible and wearable self-powered sensor system consisting of a high sensitivity rGO-based sensor laminated with a stretchable ZnSe/CoSe₂//ECNT film asymmetric supercapacitor (ASC) (ECNT: electrochemically activated carbon nanotube film). The unique sensor can be powered by the ASC to detect various human motions under strains up to 150%.

170–178

A new class of luminescent nanoprobes based on main-group Sb³⁺emitters

Chunguang Zhang^1,2, Meiran Zhang¹, Wei Zheng^1,2,3,*, Jiaojiao Wei¹, Shiteng Wang¹, Ping Huang^1,2,3, Xingwen Cheng¹, Tao Dai¹, Zhuo Chen¹, and Xueyuan Chen^1,2,3,*

¹ Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, China

² Fujian Normal University, China

³ Fujian Science Technology Innovation Laboratory for Optoelectronic Information of China, China

A new class of luminescent nanoprobe based on main-group Sb³⁺-doped CaS nanocrystals was developed and explored for targeted cancer cell imaging and zebrafish imaging. The optical properties and excited-state dynamics of Sb³⁺ emitters in CaS nanocrystals were systematically investigated by means of temperature-dependent steady-state and transient photoluminescence spectroscopies.

179–185

Improving the intrinsic electronic conductivity of NiMoO₄ anodes by phosphorous doping for high lithium storage

Luchao Yue^1,2, Chaoqun Ma³, Shihai Yan³, Zhenguo Wu¹, Wenxi Zhao², Qian Liu^2,*, Yonglan Luo², Benhe Zhong¹, Fang Zhang⁴, Yang Liu⁵, Abdulmohsen Ali Alshehri⁶, Khalid Ahmed Alzahrani⁶, Xiaodong Guo^1,*, and Xuping Sun^2,*

¹ Sichuan University, China

² University of Electronic Science and Technology of China, China

³Qingdao Agricultural University, China

⁴National Engineering Research Center for Nanotechnology, China

⁵Henan Normal University, China

⁶King Abdulaziz University, Saudi Arabia

Phosphorus was employed as an effective dopant to improve the electronic conductivity and kinetics reaction of NiMoO₄ as an anode for lithium ion batteries. Benefiting from the phosphorus doping, the rate capability of NiMoO₄ is enlarged two folds at a high current density (2,000 mA•g⁻¹).

186–194

Graphdiyene enables ultrafine Cu nanoparticles to selectively reduce CO₂ to C²⁺ products

Yong-Bin Chang, Chao Zhang, Xiu-Li Lu, Wen Zhang^*, and Tong-Bu Lu^*

Tianjin University of Technology, China

The overly strong binding of intermediates on small-sized Cu nanoparticles is relaxed, which enables ultrafine Cu nanoparticles to selectively reduce CO₂ to C²⁺ products.

195–201

Bridging localized electron states of pyrite-type CoS₂ cocatalyst for activated solar H₂ evolution

Hengming Huang^1,2, Chen Xue³, Zhenggang Fang¹, Zhiliang Wang², Bin Luo², Menglong Sun¹, Ling Zhou¹, Kan Hu¹, Jiahui Kou^1,*, Lianzhou Wang^2,*, and Chunhua Lu^1,*

¹Nanjing Tech University, China

² The University of Queensland, Australia

³ Hokkaido University, Japan

CoS₂ nanocrystals were coupled with CdS nanorods to construct a composite catalyst for solar H₂ evolution reaction (HER). By electron delocalization modulation, the anion-hybridized CoS₂|P shows significant improvement on solar HER due to the reduced energy barrier and suppressed reverse reaction.

202–208

Theoretical insights into strong intrinsic piezoelectricity of blue-phosphorus-like group-IV monochalcogenides

Yuxin Dai, Xiaoli Zhang, Yu Cui, Mengyuan Li, Yao Luo, Fan Jiang, Renqiang Zhao, and Yucheng Huang^*

Anhui Normal University, China

Density functional theory calculations were performed to predict the piezoelectric coefficients of the blue-phosphorus-like group-IV monochalcogenides.

209–216

FeSb@N-doped carbon quantum dots anchored in 3D porous N-doped carbon with pseudocapacitance effect enabling fast and ultrastable potassium storage

Zhihui Li¹, Qingmeng Gan², Yifan Zhang¹, Jing Hu², Peng Liu^1,*, Changhong Xu¹, Xibing Wu¹, Yilin Ge¹, Feng Wang¹, Qingrong Yao¹, Zhouguang Lu^2,*, and Jianqiu Deng^1,*

¹ Guilin University of Electronic Technology, China

²Southern University of Science and Technology, China

Growing FeSb quantum dots on three-dimensional (3D) porous carbon: FeSb@N-doped carbon quantum dots anchored in 3D porous N-doped carbon demonstrates promising electrochemical performance as anode material for potassium-ion batteries.

217–224

Graphene foam resonators: Fabrication and characterization

Yahav Ben-Shimon, Siva K. Reddy, and Assaf Ya'akobovitz^*

Ben-Gurion University of the Negev, Israel

We present here the first-ever miniaturized graphene foam-based resonator. We developed a simple yet reliable fabrication process, in which graphene foam is synthesized and assembled on a cavity to form suspended devices and then we electrostatically excited them. We observed significant energy dissipation and we investigated the influence of temperature on the dynamic operation. Finally, we observed a mode-coupling of a resonance mode and a mode having twice its frequency.

225–229

Molten-LiCl induced thermochemical prelithiation of SiO_x: Regulating the active Si/O ratio for high initial Coulombic efficiency

Yang Li, Yong Qian, Jie Zhou, Ning Lin^*, and Yitai Qian^*

University of Science and Technology of China, China

A molten-salt-induced thermochemical prelithiated approach for regulating active Si/O ratio of SiO_x and thus enhancing initial Coulombic efficiency (ICE) is introduced, which integrates the coating of LiNH₂ in Li/NH₃ solution and heat treatment of pre-synthesized LiNH₂-coated SiO_x in molten-LiCl.

230–237

A dual-active Co-CoO heterojunction coupled with Ti₃C₂-Mxene for highly-performance overall water splitting

Dezheng Guo¹, Xin Li², Yanqing Jiao¹, Haijing Yan^1,*, Aiping Wu¹, Ganceng Yang¹, Yu Wang¹ , Chungui Tian¹, and Honggang Fu^1,*

¹ Heilongjiang University, China

² Heilongjiang Provincial Hospital, China

A bifunctional hydrogen evolution reaction and oxygen evolution reaction electrocatalyst by synergistically coupling a dual-active Co-based heterojunction (Co-CoO) with Ti₃C₂-MXene is proposed. The electrolyzer exhibits a low voltage of 1.55 V at 10 mA•cm⁻² and remarkable durability.

238–247

Microfluidic-enabled ambient-temperature synthesis of ultrasmall bimetallic nanoparticles

Huayi Shi¹, Bin Song¹, Runzhi Chen¹, Qiang Zhang², Guyue Hu¹, Jing Li¹, Jinhua Wang¹, Xinyu Meng¹, Houyu Wang^1,*, and Yao He^1,*

¹ Soochow University, China

² Shanghai Jiao Tong University, China

A synthetic method is presented for the ambient synthesis of ultrasmall bimetallic nanoparticles with narrow size distribution (RSD of diameters < 20%) and homogenous bimetallic nature (SD of element ratio < 3.5%).

248–254

Generalized assembly of sandwich-like 0D/2D/0D hetero-structures with highly exposed surfaces toward superior electrochemical performances

Shuqing Xue, Guanhong Wu, Mingzhong Li, Zihan Liu, Yuwei Deng, Wenqian Han, Xuanyu Lv, Siyu Wan, Xiangyun Xi, Dong Yang^*, and Angang Dong^*

Fudan University, China

We report a generalized strategy of assembling sandwich-like 0D/2D/0D heterostructures with barely covered surfaces and facilitated mass-transport channels, which render them highly suitable for surface-related electrochemical energy applications. As a proof of concept, the as-prepared MXene/NiFe₂O₄ and MXene/Fe₃O₄ heterostructures exhibit superior electrocatalytic and capacitive performances, respectively.

255–263

Protein nanocapsules based vectors for efficient gene transfection

Xuan Hu^1,2, Song Wang¹, Junjie Xu², Yilong Yang², Zhang Zhang², Xiaolin Wang², Xiaopeng Zhang^2,*, and Wei Chen^2,*

¹National University of Defense Technology, China

² Beijing Institute of Biotechnology, China

A series of protein nanocapsules with different surface chemistries are designed to systematically investigate the influence of specific functional groups on the cytosolic release kinetics. This work provides a new type of alternative self-assembled platform for gene delivery and details a framework on the future design of transfection agents.

264–271

Enhancement of output power density in a modified polytetrafluoroethylene surface using a sequential O₂/Ar plasma etching for triboelectric nanogenerator applications

Teerayut Prada¹, Viyada Harnchana^1,*, Anthika Lakhonchai², Artit Chingsungnoen^2,*, Phitsanu Poolcharuansin², Narong Chanlek³, Annop Klamchuen⁴, Prasit Thongbai¹, and Vittaya Amornkitbamrung¹

¹Khon Kaen University, Thailand

² Mahasarakham University, Thailand

³ Synchrotron Light Research Institute (Public Organization), Thailand

⁴ National Nanotechnology Center (NANOTEC), NSTDA, Thailand

The two-step O₂/Ar plasma is reported to modify polytetrafluo-roethylene (PTFE) surface for the first time. This CF₄-free plasma etching produces high surface area as well as defective bonds, serving as charge trapping sites that intensified triboelectric charge density. These factors effectively enhance the triboelectric nano-generator (TENG) power output density of PTFE nearly thirty times. Furthermore, the mechanical energy harvesting and keyboard sensing applications are demonstrated.

272–279

Biaxial strained dual-phase palladium-copper bimetal boosts formic acid electrooxidation

Jiarun Geng, Zhuo Zhu, Youxuan Ni, Haixia Li, Fangyi Cheng, Fujun Li^*, and Jun Chen

Nankai University, China

Dual-phase PdCu with remarkable biaxial strain is synthesized via a one-pot wet-chemical approach to boost formic acid oxidation. The interfacial biaxial strain induces the downshift of d-band center of Pd atoms and thus weakens the adsorption strength of undesired intermediates, which merits PdCu with superior catalytic activity and durability towards formic acid oxidation.

280–284

Ultrahigh rate capability of 1D/2D polyaniline/titanium carbide (MXene) nanohybrid for advanced asymmetric supercapacitors

Jinhua Zhou¹, Qi Kang², Shuchi Xu¹, Xiaoge Li¹, Cong Liu¹, Lu Ni¹, Ningna Chen¹, Chunliang Lu³, Xizhang Wang¹, Luming Peng¹, Xuefeng Guo¹, Weiping Ding1, and Wenhua Hou^1,*

¹ Nanjing University, China

² Shanghai Jiao Tong University, China

³ Yangzhou University, China

One-dimensional/two-dimensional (1D/2D) PANI/Ti₃C₂T_x nanohybrid was first synthesized through a simple assembly of polyaniline (PANI) nanofibers and Ti₃C₂T_x nanosheets. Benefiting from the high specific capacitance and ultrahigh rate capability with a fast kinetics of PANI/Ti₃C₂T_x, two assembled asymmetric supercapacitors (ASCs) deliver high energy and power densities as well as a good long-term stability, showing an exciting potential application in energy storage devices.

285–295

Epitaxially aligned single-crystal gold nanoplates formed in large-area arrays at high yield

Trevor B. Demille, Robert D. Neal, Arin S. Preston, Zijuan Liang, Allen G. Oliver, Robert A. Hughes, and Svetlana Neretina^*

University of Notre Dame, USA

The nanofabrication of square-centimeter arrays of single-crystal gold nanoplates that combines nanoimprint lithography, directed-assembly, and a seed-mediated liquid-phase synthesis is demonstrated. Produced in high yield and with tunable optical properties, these nanoplates represent a viable building-block for on-chip plasmonic devices.

296–303

N-doped carbon nanotubes supported CoSe₂ nanoparticles: A highly efficient and stable catalyst for H₂O₂ electrosynthesis in acidic media

Longcheng Zhang^1,2, Jie Liang², Luchao Yue^1,2, Zhaoquan Xu², Kai Dong², Qian Liu², Yonglan Luo², Tingshuai Li², Xiaohong Cheng^3,*, Guanwei Cui⁴, Bo Tang⁴, Abdulmohsen Ali Alshehri⁵, Khalid Ahmed Alzahrani⁵, Xiaodong Guo^1,*, and Xuping Sun^2,*

¹Sichuan University, China

² University of Electronic Science and Technology of China, China

³Hubei University of Arts and Science, China

⁴Shandong Normal University, China

⁵King Abdulaziz University, China

Nitrogen-doped carbon nanotubes (NCNTs) as a multi-functional support for CoSe₂ nanoparticles boost the overall two-electron oxygen reduction reaction performances. The CoSe₂@NCNTs achieve a high H₂O₂ selectivity of 93.2% with excellent durability. Effective electro-Fenton process enabled by such CoSe₂@NCNTs is also demonstrated.

304–309

Multiple structural defects in ultrathin NiFe-LDH nanosheets synergistically and remarkably boost water oxidation reaction

Zhongyin Zhao^1.2, Qi Shao¹, Jiangyan Xue¹, Bolong Huang^3,*, Zheng Niu^1,*, Hongwei Gu¹, Xiaoqing Huang^1,*, and Jianping Lang^1,2,*

¹Soochow University, China

² Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, China

³ The Hong Kong Polytechnic University, Hong Kong, China

We reported a simple and green H₂O₂-assisted etching method that integrated nanostructure engineering with defect engineering to synthesize NiFe layered double hydroxide nanosheets with a porous structure, oxygen vacancies and Ni³⁺ defects on nickel foam (denoted as NiFe-LDHs/NF). Benefiting from the synergistic merits of these defects, the NiFe-LDH-NSs/NF exhibited an excellent oxygen evolution reaction (OER) activity.

310–316

Multiple plasmon couplings in 3D hybrid Au-nanoparticles-decorated Ag nanocone arrays boosting highly sensitive surface enhanced Raman scattering

Zewen Zuo^*, Lianye Sun, Yongbin Guo, Lujun Zhang, Junhu Li, Kuanguo Li, and Guanglei Cui

Anhui Normal University, China

Three-dimensional hybrid plasmon systems composed of ordered Ag nanocone arrays decorated with high-density Au nanoparticles are constructed by a template-assisted physical vapor deposition approach. Such structures allow for multiple plasmon couplings among various resonance modes, producing intense and high-density hot spots which boost a high-performance surface enhanced Raman scattering (SERS) detection with high sensitivity, high reproducibility, and quantitative analysis ability.

317–325

Fast electrochemical activation of the broadband saturable absorption of tungsten oxide nanoporous film

Ruipeng Hou¹, Hui Li¹, Mengjuan Diao¹, Yanhui Sun¹, Ying Liang¹, Zhiyang Yu², Zhipeng Huang^1,*, and Chi Zhang^1,*

¹Tongji University, China

²Fuzhou University, China

Electrochemical reduction enables the fast and broadband activation of the nonlinear absorption of nanoporous tungsten oxide (WO_3–x) solid thin film.

326–332

Cerium oxide nanoparticles-mediated cascade catalytic chemo-photo tumor combination therapy

Zitao Hu and Yin Ding^*

Nanjing University, China

Our reported treatment can selectively and greatly enhance intracellular O₂ and reactive oxygen species (ROS) levels in tumor region, which depends on two-step catalytic properties of nanoceria (Ce⁴⁺/Ce³⁺ = 3.46, neutral surface charge, mostly localize into the cytoplasm, pH 7.4–6.5, catalase-like catalytic agents convert to Ce⁴⁺/Ce³⁺ = 0.58, negative surface charge, mostly localize into the lysosomes, pH 5–4, oxidase-like catalytic agents, triggered by near infrared (NIR) laser irradiation).

333–345

In-situ evolution process understanding from a salan-ligated manganese cluster to supercapacitive application

Xu Zhang¹, Kai Zhao¹, Xu Peng^1,*, Mohamedally Kurmoo³, and Ming-Hua Zeng^1,2,*

¹Hubei University, China

² Guangxi Normal University, China

³ Université de Strasbourg, France

In-situ evolution process understanding from a manganese cluster to supercapacitive MnO_x/carbon is a prototype to verify that packing mode analysis plays a key role to study the structure–performance relationship in high-temperature reaction.

346–351

Lithiophilic N-doped carbon bowls induced Li deposition in layered graphene film for advanced lithium metal batteries

Xiaoyu Feng^1,2, Hong-Hui Wu³, Biao Gao², Michał Świętosławski⁴, Xin He^5,*, and Qiaobao Zhang^1,*

¹ Xiamen University, China

²Wuhan University of Science and Technology, China

³University of Science and Technology Beijing, China

⁴ Jagiellonian University, Poland

⁵ Sichuan University, China

A composite structure that integrates the well-distributed N-doped hollow porous bowl-like hard carbon (CB) with the reduced graphene layers (CB@rGO) as a stable host for Li metal electrodes is designed, exhibiting long-term cyclability over 600 cycles with 98.4% Coulombic efficiency.

352–360

Inside-out dual-doping effects on tubular catalysts: Structural and chemical variation for advanced oxygen reduction performance

Yang Gao^1,2,3, Debin Kong^1,*, Jiaxu Liang¹, Daliang Han², Bin Wang^1,*, Quan-Hong Yang², and Linjie Zhi^1,2,3,*

¹National Center for Nanoscience and Technology, China

²Tianjin University, China

³ University of Chinese Academy of Sciences, China

Dual-doped carbon submicrotubes were prepared by an inside-out doping method and used to study the principles of designing dual-doping catalysts for oxygen reduction reaction.

361–367

Large area van der Waals epitaxy of II-VI CdSe thin films for flexible optoelectronics and full-color imaging

Wenwu Pan¹, Junliang Liu¹, Zekai Zhang¹, Renjie Gu¹, Alexandra Suvorova¹, Sarah Gain¹, Han Wang¹, Ziyuan Li², Lan Fu², Lorenzo Faraone¹, and Wen Lei^1,*

¹ The University of Western Australia, Australia

²The Australian National University, Australia

High performance flexible photoconductors for full-color imaging demonstrate the feasibility of van der Waals epitaxy assisted molecular beam epitaxy for growing high quality, large area, and free-standing epitaxial CdSe layers without the requirement for lattice matching to mica substrate.

368–376

Induced structural modifications in ZnS nanowires via physical state of catalyst: Highlights of 15R crystal phase

Sumit Kumar^1,*, Frédéric Fossard², Gaëlle Amiri¹, Jean-Michel Chauveau¹, and Vincent Sallet^1,*

¹CNRS-Université de Versailles St Quentin en Yvelines, France

²Université Paris-Saclay, France

ZnS nanowires (NWs) have been grown by two different approaches based on the physical state of the catalyst, specifically called vapor–liquid–solid (VLS) and vapor–solid–solid (VSS). Both approaches present unique structural properties, and remarkably, the crystallization of a 15R structure is highlighted in NWs grown by the VLS process.

377–385

Flexible multi-level quasi-volatile memory based on organic vertical transistor

Huihuang Yang^1,2, Qian Yang^1,2, Lihua He¹, Xiaomin Wu¹, Changsong Gao¹, Xianghong Zhang¹, Liuting Shan¹, Huipeng Chen^1,2,*, and Tailiang Guo^1,2

¹ Fuzhou University, China

²Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, China

This work proposed a new type of multi-level quasi-volatile memory based on organic vertical transistor. Contributing to vertical structure and appropriate doping ratio of blend film, the different memory current levels with highly fault-tolerant could be achieved along with these features of high writing speed and decent retention characteristics, which fill the gap between volatile and non-volatile memories.

386–394

SiO_x/C-Ag nanosheets derived from Zintl phase CaSi₂ via a facile redox reaction for high performance lithium storage

Jie Xie^1,2, Lin Sun^1,2,3,*, Yanxiu Liu², Xinguo Xi², Ruoyu Chen^1,*, and Zhong Jin^3,*

¹ Changzhou University, China

² Yancheng Institute of Technology, China

³ Nanjing University, China

Two-dimensional Si₆H₆ nanosheets are prepared via exfoliation of CaSi₂ using chemical stripping method. After reacting with AgNO₃-aniline complex and carbonizing, the SiO_x/C-Ag nanosheets electrode exhibits high capacity and long-term cycling stability when served as anode materials in lithium-ion battery.

395–400

Anisotropic in-plane thermal conductivity for multi-layer WTe₂

Yuehua Wei¹, Chuyun Deng¹, Xiaoming Zheng², Yangbo Chen², Xiangzhe Zhang¹, Wei Luo¹, Yi Zhang¹, Gang Peng¹, Jinxin Liu³, Han Huang³, Weiwei Cai^2,4, Qi Ge⁴, Renyan Zhang^1,*, Xueao Zhang^2,*, and Shiqiao Qin^1,*

¹National University of Defense Technology, China

² Xiamen University, China

³ Central South University, China

⁴Chongqing 2D Materials Institute, China

The supported 30 nm WTe₂ encased with 70 nm Al₂O₃ delivered 4.8 and 3.0 W•m⁻¹•K⁻¹ in-plane thermal conductivity along zigzag and armchair directions at room temperature, in which the waste heat in WTe₂ would be mostly dissipated to metal contacts located along zigzag for relieving the local temperature discrepancy in the channel effectively and preventing degradation or breakdown.

401–407

Emerging 2D magnetic states in a graphene-based monolayer of EuC₆

Ivan S. Sokolov¹, Dmitry V. Averyanov¹, Fabrice Wilhelm², Andrei Rogalev², Oleg E. Parfenov¹, Alexander N. Taldenkov¹, Igor A. Karateev¹, Andrey M. Tokmachev¹, and Vyacheslav G. Storchak^1,*

¹National Research Center “Kurchatov Institute”, Russia

² ESRF-The European Synchrotron, France

Element-selective X-ray absorption spectroscopy (XAS) and magnetic circular dichroism (XMCD) studies probe the electronic structure and competing magnetic states in EuC6 scaled down to one monolayer.

408–413

Solvent-controlled synthesis strategy of multicolor emission carbon dots and its applications in sensing and light-emitting devices

Zhonghui Sun, Fanyong Yan^*, Jing Xu, Hao Zhang, and Li Chen

Tiangong University, China

Citric acid and Nile blue A as precursors were used for the preparation of blue, yellow and red fluorescent carbon dots based on solvent-engineered strategy.

414–422

A hybrid flexible gas sensory system with perceptual learning

Qifeng Lu¹, Fuqin Sun¹, Yanbing Dai¹, Yingyi Wang², Lin Liu¹, Zihao Wang¹, Shuqi Wang¹, and Ting Zhang^1,*

¹ Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences (CAS), China

² Xi’an Jiaotong-Liverpool University, China

A perceptual sensory system is developed from the inspiration of biological olfaction function. Analog signals from the gas sensor are converted to pulse-like physiological signals by the flexible oscillator, and further processed by the artificial synapse. The recognition accuracy of the gas with a given concentration is enhanced by repeating training, illustrating a great potential in mimicking biological cognitive functions.

423–428

Substrate mediated dissolution of redox active nanoparticles; electron transfer over long distances

Ruo-Chen Xie, Christopher Batchelor-McAuley, Minjun Yang, and Richard G. Compton^*

University of Oxford, UK

This work reports a substrate-mediated electrochemical dissolution of redox active (herein Ag) nanoparticles driven by electron transfer over macroscopic distances to trace dissolved dioxygen via a conductive substrate.

429–437

Effects of Bi-dopant and co-catalysts upon hole surface trapping on La₂Ti₂O₇nanosheet photocatalysts in overall solar water splitting

Xiaoyan Cai^1,2, Liang Mao^1,2, Mamoru Fujitsuka³, Tetsuro Majima³, Sujan Kasani⁴, Nianqiang Wu⁵, and Junying Zhang^2,*

¹ China University of Mining and Technology, China

² Beihang University, China

³ Osaka University, Japan

⁴West Virginia University, USA

⁵University of Massachusetts Amherst, USA

Surface hole trap is a critical factor that limits photocatalytic activity of La₂Ti₂O₇. With the deposited Co-Pi and Pt co-catalysts for holes and electrons transfer, overall water splitting can be achieved on Bi-doped La₂Ti₂O₇ due to the passivated hole-trapping by Bi doping and accelerated hole-injection to water by Co-Pi deposition.

438–445

A facile solution phase synthesis of directly ordering monodisperse FePt nanoparticles

Yongsheng Yu¹, Lin He¹, Junjie Xu², Jiaming Li¹, Sida Jiang¹, Guanghui Han¹, Baojiang Jiang³, Wenjuan Lei¹, Weiwei Yang^1,*, and Yanglong Hou^2,*

¹ Harbin Institute of Technology, China

²Peking University, China

³ Heilongjiang University, China

A new and facile strategy for directly synthesizing monodisperse ordered FePt nanoparticles (NPs) with average size 10.7 nm without further annealing or doping the third element was developed. The L10-FePt NPs synthesized by this approach show a coercivity of 3.15 kOe and saturation magnetization of 45 emu/g at room-temperature.

446–451

Nano-sized Ag rather than single-atom Ag determines CO oxidation activity and stability

Fei Wang^1,2, Zhao Li², Honghong Wang¹, Min Chen¹, Changbin Zhang^1,4,*, Ping Ning², and Hong He^1,3,4,†,*

¹ Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, China

² Kunming University of Science and Technology, China

³ Institute of Urban Environment, Chinese Academy of Sciences, China

⁴University of Chinese Academy of Sciences, China

^† Present address: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, China

Our study resolves the debate that nano-sized Ag rather than single-atom Ag determines CO oxidation activity and stability by using combined experimental measurements, instrument characterizations and density functional theory (DFT) calculations. Superior oxygen activation ability and the valence stability are conducive to the advantages of Ag nanoparticles in the CO oxidation reaction.

452–456

Phase-pure two-dimensional FexGeTe₂ magnets with near-room-temperature TC

Govindan Kutty Rajendran Nair¹, Zhaowei Zhang², Fuchen Hou^3,6, Ali Abdelaziem^1,4,6, Xiaodong Xu⁵, Steve Wu Qing Yang², Nan Zhang², Weiqi Li⁵, Chao Zhu¹, Yao Wu¹, Heng Weiling¹, Lixing Kang¹, Teddy Salim¹, Jiadong Zhou1, Lin Ke², Junhao Lin³, Xingji Li^5,*, Weibo Gao^2,*, and Zheng Liu^1,2,7,*

¹School of Material Science and Engineering, China

²Nanyang Technological University, Singapore

3 Southern University of Science and Technology, China

4 Agency for Science Technology and Research (A*STAR), Singapore

⁵ Harbin Institute of Technology, China

6 Cairo University, Egypt

⁷ CINTRA CNRS/NTU/THALES, Singapore

The growth of different phases of layered ferromagnetic iron germanium telluride (Fe_xGeTe₂) via a new chemical vapor deposition (CVD) method is shown in this work. Fe₅GeTe₂ displays near room temperature TC with out-of-plane ferromagnetic ordering and exhibits a two-dimensional (2D) Ising to three-dimensional (3D) XY magnetic critical behavior transition.

457–464

The precursor compound of two types of ZnSe magic-sized clusters

Xingxia Yang, Meng Zhang, Qiu Shen, Yang Li, Chaoran Luan^*, and Kui Yu^*

Sichuan University, China

One type of ZnSe precursor compounds (PCs) which has no characteristic peaks in cyclohexane (CH) could transform to two types of magic-size clusters (MSCs), MSC-299 and MSC-328, with the assistance of octylamine (OTA) and acetic acid (HOAc). Attributing to the characterization of PC powder obtained by purifying ZnSe PCs with toluene (Tol) and methanol (MeOH), the composition of ZnSe PCs is proposed to be Zn₃₂Se₁₆.

465–474

Record-high saturation current in end-bond contacted monolayer MoS₂ transistors

Jiankun Xiao, Zhuo Kang, Baishan Liu, Xiankun Zhang, Junli Du, Kuanglei Chen, Huihui Yu, Qingliang Liao, Zheng Zhang^*, and Yue Zhang^*

University of Science and Technology Beijing, China

The low saturation current of monolayer MoS₂ transistors is caused by the high contact resistance (Rc). Here our work presents a scalable strategy with a clean end-bond contact scheme that leads to size-independent electrodes and ultralow contact resistance of 2.5 kΩ•μm to achieve a record saturation current density of 730 μA•μm⁻¹ at 300 K.

475–481

Vascular-confined multi-passage discoidal nanoconstructs for the low-dose docetaxel inhibition of triple-negative breast cancer growth

Alessia Felici^1,2, Daniele Di Mascolo¹, Miguel Ferreira¹, Simone Lauciello¹, Luca Bono¹, Andrea Armirotti¹, Arunkumar Pitchaimani¹, Anna Lisa Palange¹, and Paolo Decuzzi^1,*

¹Fondazione Istituto Italiano di Tecnologia, Italy

²University of Genoa, Italy

In this work, “multi-passage” discoidal polymeric nanoconstructs (DPN) are proposed as a bioinspired drug delivery system for the systemic delivery of the chemotherapeutic drug docetaxel (DTXL) and the imaging compound 1,2-distearoyl-sn-glycero-3-phosphoethanolamine (DSPE)-Cy5. These vascular confined nanoconstructs, biomimicking the behavior of circulating platelets, can treat orthotopic triple-negative breast cancer (TNBC) effectively, at minimal taxane doses.

482–491

Robust frequency-upconversion lasing operated at 400 K from inorganic perovskites microcavity

Zhifeng Shi^1,*, Fei Zhang¹, Jingjing Yan¹, Yuan Zhang¹, Xu Chen¹, Shu Chen¹, Di Wu¹, Xinjian Li¹, Yu Zhang^2,*, and Chongxin Shan¹

¹Zhengzhou University, China

² Jilin University, China

Vapor-phase epitaxial CsPbBr₃ microplatelets with self-formed whispering gallery mode (WGM) microcavities were employed as the gain medium for stable frequency-upconversion lasing operated at 400 K.

492–501

Facet-induced coordination competition for highly ordered CsPbBr₃ nanoplatelets with strong polarized emission

Dandan Yang¹, Xiaoming Li^1,*, Yuelei Li¹, Bo Cai¹, Lin Su², Shengli Zhang¹, Zhili Juan¹, Cuifang Meng¹, Dongling Geng¹, Jiaxin Chen¹, Feng Xu², and Haibo Zeng^1,*

¹Nanjing University of Science and Technology, China

² Southeast University, China

The controllable anisotropic growth of CsPbBr₃ nanoplatelets (NPLs) is restricted due to the rapid nucleation and growth process. The two-step nucleation strategy has been developed to induce the binding interaction between surface ligands and lead to the facet coordination competition, and then realize the anisotropic growth of NPLs.

502–509

A polyamidoamine (PAMAM) derivative dendrimer with high loading capacity of TLR7/8 agonist for improved cancer immunotherapy

Jia-Si Wu, Jia-Xian Li, Na Shu, Qi-Jia Duan, Qi-Song Tong, Jing-Yang Zhang, Yong-Cong Huang, Si-Yu Yang, Zhi-Bin Zhao^*, and Jin-Zhi Du^*

South China University of Technology, China

A poly(amidoamine) (PAMM) derivative dendrimer G4-N,N-diethylaminoethyl (DEEA) was developed to achieve very high loading capacity of Toll-like receptor 7 and 8 (TLR7/8) agonist resiquimod (R848) up to 35.9 wt.% by taking advantage of its dendritic structure. The resulting formulation (G4-DEEA@R848) exhibited potent in vivo antitumor activity by repolarizing tumor-associated macrophages (TAMs) into M1 phenotype, reducing the presence of myeloid-derived suppressor cells (MDSCs) and increasing the infiltration of tumor cytotoxic T cells.

510–518

Tuning the coordination environment of single-atom catalyst M-N-C towards selective hydrogenation of functionalized nitroarenes

Dan Zhou^1,2, Leilei Zhang^2,*, Xiaoyan Liu², Haifeng Qi², Qinggang Liu², Ji Yang², Yang Su², Jingyuan Ma³, Jianzhong Yin^2,*, and Aiqin Wang^2,*

¹ Dalian University of Technology, China

² Dalian Institute of Chemical Physics, Chinese Academy of Sciences, China

³ Shanghai Advanced Research Institute, Chinese Academy of Sciences, China

Coordinative structure of M-N-C single-atom catalysts is finely tuned towards the selective hydrogenation of functionalized nitroarenes and a correlation between coordination number of M-N and activity is established.

519–527

Phase and structure modulating of bimetallic Cu/In nanoparticles realizes efficient electrosynthesis of syngas with wide CO/H₂ ratios

Chenqi Shen¹, Pengtang Wang¹, Leigang Li¹, Xiaoqing Huang^1,2,*, and Qi Shao^1,*

¹Soochow University, China

² Xiamen University, China

The strategy of phase and structure modulating of bimetallic Cu/In nanoparticles has been successfully developed for the efficient electrosynthesis of syngas with the CO/H₂ ratios readily tuning from 1.2 ± 0.1 to 9.0 ± 1.5. The different situations of elemental In enrichment on the elemental Cu surfaces during the CO₂ reduction reaction enable tuning the composition of electro-synthesized syngas.

528–534

An aqueous 2.1 V pseudocapacitor with MXene and V-MnO₂ electrodes

Jiabin Wu^1,2, Qun Li¹, Christopher E. Shuck², Kathleen Maleski², Husam N. Alshareef³, Jun Zhou¹, Yury Gogotsi^2,*, and Liang Huang^1,*

¹Huazhong University of Science and Technology, China

² Drexel University, USA

³King Abdullah University of Science and Technology (KAUST), Saudi Arabia

An asymmetric device is developed with high operating voltage window of 2.1 V in aqueous electrolyte. This study establishes the possibility of using asymmetric MXene-based pseudocapacitive devices to expand the working voltage window of traditional redox-capable oxide materials.

535–541

In-situ imaging the electrochemical reactions of Li-CO₂ nanobatteries at high temperatures in an aberration corrected environmental transmission electron microscope

Peng Jia¹, Meiqi Yu¹, Xuedong Zhang², Tingting Yang¹, Dingding Zhu², Tongde Shen¹, Liqiang Zhang^1,*, Yongfu Tang^1,*, and Jianyu Huang^1,2,*

¹ Yanshan University, China

² Xiangtan University, China

This study reported a real time study of a Li-CO₂ battery by using in-situ environmental transmission electron microscopy (ETEM) technique integrated with a novel micro-electro-mechanical system (MEMS) heating device. We revealed that increasing the charging temperature can dramatically boost the decomposition of Li₂CO₃. Furthermore, the electrochemical reaction mechanisms of the Li-CO₂ batteries were elucidated, providing fundamental understanding to the Li-CO₂ batteries.

542–550

Facile synthesis of C₃N₄-supported metal catalysts for efficient CO2 photoreduction

Yun-Nan Gong^1,2, Bi-Zhu Shao², Jian-Hua Mei², Wei Yang¹, Di-Chang Zhong^1,*, and Tong-Bu Lu¹

¹Tianjin University of Technology, China

²Gannan Normal University, China

Highly dispersed Co sites anchoring on g-C₃N₄ have been prepared via one-step calcination of Co-MOF and urea in the air, which exhibits excellent performance for photocatalytic CO₂ reduction to CO with a high CO evolution rate of 394.4 μmol•g^–1•h^–1, over 80 times higher than that of pure g-C₃N₄.

551–556

Amphiphilic Pd@micro-organohydrogels with controlled wettability for enhancing gas–liquid–solid triphasic catalytic performance

Minghui Zhang¹, Tianyi Zhao^1,*, Cunming Yu¹, Qian Liu¹, Guangyan Wang¹, Hui Yang², Ming Yang², Lei Jiang¹, and Mingjie Liu^1,*

¹ Beihang University, China

² Interface and Chemical Thermodynamics Institute of Chemistry, Chinese Academy of Sciences, China

Bioinspired amphiphilic micro-organohydrogel-based catalysts with tunable surface wettabilities were developed by anchoring alkane chains onto poly(2-(dimethylamino)ethyl methacrylate) hydrophilic microgel network. Amphiphilic catalysts exhibited enhanced catalytic activities, wherein hydrophilic domains kept gels well dispersed in water and hydrophobic domains concentrated organic substrates and H₂ at gas–liquid–solid triphasic reaction interface.

557–563

Nanofiber-based transparent film with controllable optical transparency adjustment function for versatile bionic applications

Wen Wang¹, Shuang Wang¹, Chenxue Xiang², Dan Xue², Mufang Li¹, Qiongzhen Liu¹, Longhai Piao^3,*, and Dong Wang^1,2,*

¹ Wuhan Textile University, China

²Donghua University, China

³ Kongju National University, Republic of Korea

The nanofiber-based transparent film shows a reversible change in transparency when it is stimulated by moisture.

564–572

Different mechanisms of improving CH₃NH₃PbI₃ perovskite solar cells brought by fluorinated or nitrogen doped graphdiyne

Huan Huang¹, Bing Liu^1,2, Dan Wang^1,2, Rongli Cui¹, Xihong Guo¹, Ying Li^1,2, Shouwei Zuo^1,2, Zi Yin^1,2, Huanhua Wang¹, Jing Zhang^1,*, Hui Yuan¹, Lirong Zheng¹, and Baoyun Sun^1,*

¹Institute of High Energy Physics, Chinese Academy of Science, China

² University of Chinese Academy of Sciences, China

Fluorinated graphdiyne (F-GDY) or nitrogen-doped graphdiyne (N-GDY) has been used in the active layer of perovskite solar cells (PSCs) for the first time, bringing the boosted solar cells performance and the different mechanism, especially the induced new Pb–F bonds, the variation of valence state of lead or higher conductivity.

573–580

Multidimensional thermally-induced transformation of nest-structured complex Au–Fe nanoalloys towards equilibrium

Jacob Johny¹, Oleg Prymak¹, Marius Kamp², Florent Calvo³, Se-Ho Kim⁴, Anna Tymoczko¹, Ayman El-Zoka⁴, Christoph Rehbock¹, Ulrich Schürmann², Baptiste Gault^4,5, Lorenz Kienle², and Stephan Barcikowski^1,*

¹University of Duisburg-Essen, Germany

²Kiel University, Germany

³University Grenoble Alpes, CNRS, France

⁴ Max-Planck-Institut für Eisenforschung GmbH, Germany

⁵ Imperial College London, UK

Temperature-induced transformation of bimetallic Au–Fe nano-particles from highly complex phase structures towards equilibrium is demonstrated using a set of complemented analytical tools at near-atomic scale resolution. Such nanoscale transformations are also verified through atomistic simulations.

581–592

Programmed albumin nanoparticles regulate immuno-suppressive pivot to potentiate checkpoint blockade cancer immunotherapy

Liandong Feng^1,2, Li Yang¹, Longjie Li¹, Junying Xiao¹, Nana Bie¹, Chao Xu¹, Jun Zhou1, Hongmei Liu¹, Lu Gan¹, and Yuzhou Wu^1,*

¹ Huazhong University of Science and Technology, China

² Wuhan National Laboratory for Optoelectronics-Huazhong University of Science and Technology, China

Prostaglandin E2 (PGE2) suppression via the programmed release nanoparticles reverses immunosuppressive environment to potentiate checkpoint blockade cancer immunotherapy.

593–602

Single-atomic-site iron on N-doped carbon for chemoselective reduction of nitroarenes

Guoping Lu¹, Kangkang Sun¹, Yamei Lin³, Qixuan Du¹, Jiawei Zhang⁴, Kui Wang^2,*, and Pengcheng Wang^1,*

¹Nanjing University of Science & Technology, China

² Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, National Engineering Laboratory for Biomass Chemical Utilization, China

³ Nanjing Normal University, China

⁴Hunan University, China

A simple and gram-scale strategy for the synthesis of single-atomic-site iron on N-doped carbon with a relatively high load of Fe (2.4 wt.%) has been disclosed. The as-prepared catalyst exhibits superior catalytic activity and selectivity on the hydrogenation of nitroarenes (turnover frequency (TOF) up to 1,727 h⁻¹) at room temperature with a broad substrate scope, in which FeN4 is identified to be the most active site.

603–611

Enhanced photo-driven ion pump through silver nanoparticles decorated graphene oxide membranes

Yaping Feng^1,2, Haoyu Dai¹, Yi Zhang³, Jianjun Chen1, Fengxiang Chen⁴, and Lei Jiang^1,*

¹ Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, China

² University of Chinese Academy of Sciences, China

³ Beijing University of Technology, China

⁴Wuhan Textile University, China

Enhanced photo-driven ion pump is realized through silver nanoparticles decorated graphene oxide membranes. Electric potential difference is established associating with competent light absorption and effective separation of photo-excited electrons and holes, which pumps ion against 40-fold concentration gradient under an asymmetric illumination of 100 mW•cm^–2 for 30 s.

612–616

Efficient quasi-stationary charge transfer from quantum dots to acceptors physically-adsorbed in the ligand monolayer

Lei Yang¹, Xiaoqi Zhou¹, Yuzhong Chen¹, Yufeng Qin², Xueqian Kong¹, Haiming Zhu¹, Chaodan Pu^1,2,*, and Xiaogang Peng^1,*

¹ Zhejiang University, China

²ShanghaiTech University, China

A general charge transfer mechanism—quasi-stationary charge transfer—caused by physically adsorbed quinone within the ligand layer of CdSe/CdS core/shell quantum dots is confirmed. Different from static and collisional charge transfer, the efficiency of quasi-stationary charge transfer decreases as the chain length of ligand decreases.

617–626

Bottom-up synthesis of semiconductive carbonaceous nanosheets on hematite photoanode for photoelectrochemical water splitting

Guosheng Li^2,3 and Zhuofeng Hu^1,*

¹ Sun Yat-sen University, China

² Zhaoqing University, China

³ Fuzhou University, China

A novel two-dimensional (2D) material—hydrothermal carbonaceous carbon (HTCC) ultrathin nanosheets has been developed from the glucose, which can grow on hematite photoanode. It shows enhanced activity in photoelectrochemical water oxidation, and it shows even better improvement for enhancing Fe₂O₃ photoanode than that of graphene.

627–636

Mixed-dimensional van der Waals heterojunction-enhanced Raman scattering

Mingze Li, Yunjia Wei, Xingce Fan, Guoqun Li, Qi Hao, and Teng Qiu^*

Southeast University, China

A T-shaped mixed-dimensional van der Waals heterojunction was designed, which can achieve significantly improvement in molecular sensing by synergistic effect of charge transfer and radiative energy transfer.

637–643

Precursor chemistry towards highly efficient and phase-stable red emitting CsPbI₃ perovskite nanocrystals

Dejian Chen^1,2, Decai Huang^1,2, Mingwei Yang^1,2, Kunyuan Xu^1,2, Jie Hu^1,2, Sisi Liang^1,2, and Haomiao Zhu^1,2,*

¹ Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, China

² Haixi Institute, Chinese Academy of Sciences, China

α-CsPbI₃ NCs with extremely high photoluminescence quantum yield (96%) and substantially improved stability were synthesized using HPbI₃ as an alternative of the most popular PbI₂precursor. The utilization of HPbX₃ can effectively minimize the halogen vacancy defects, which are detrimental to the emission efficiency and chemical stability of perovskite NCs.

644–652

Energy band engineering via “Bite” defect located on N=8 armchair graphene nanoribbons

Shijie Sun, Yurou Guan, Zhenliang Hao, Zilin Ruan, Hui Zhang, Jianchen Lu, Lei Gao, Xiaoqing Zuo, and Jinming Cai^*

Kunming University of Science and Technology, China

Surface synthesis of “Bite” defects staggered narrow N = 8 armchair graphene nanoribbons (sn-8AGNR) and real-space electronic physical exploration.

653–658

Pearling and helical nanostructures of model protocell membranes

Zhidi Chen^1,2, Yaxun Fan^1,*, Yao Chen^1,3, Jeffrey Penfold³, Peixun Li³, Rongliang Wu^4,*, and Yilin Wang^1,2,*

¹ Institute of Chemistry, Chinese Academy of Science, China

² University of Chinese Academy of Sciences, China

³ Rutherford Appleton Laboratory, UK

⁴ Donghua University, China

The morphology of cell-sized model protocell membranes evolves from giant vesicles to pearling and helical superstructures, occuring in a single binary aqueous system composed of achiral single-chain amphiphile and biogenic polyamine.

659–668

Interplay between invasive single atom Pt and native oxygen vacancy in rutile TiO₂(110) surface: A theoretical study

Xiaoyang Wang¹, Liang Zhang², Yuxiang Bu³, and Wenming Sun^1,*

¹ China Agricultural University, China

² Dassault Systemes (Shanghai) Information Technology Co., Ltd, China

³ Shandong University, China

Interplay between invasive Pt and native oxygen vacancy (Ov) would lead to a stable exposed bimetal center on rutile TiO₂(110) surface under oxygen-rich condition. The results can provide a “quasi-dynamic” perspective to understand the structure-active evolution for single atom supported on reducible metal oxides.

669–676

Di-defects synergy boost electrocatalysis hydrogen evolution over two-dimensional heterojunctions

Yan Cui¹, Xiaoyu Guo¹, Jian Zhang^1,2,*, Xing’ao Li^1,2,*, Xinbao Zhu³, and Wei Huang^2,4

¹ Nanjing University of Posts & Telecommunications (NUPT), China

² Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications (NUPT), China

³ Nanjing Forestry University, China

⁴Northwestern Polytechnical University (NPU), China

Synergetic effects from SVD-WS₂@DG hybrids further boost the overall activity toward the hydrogen evolution reaction (HER) catalysis (an overpotential of 108 mV vs. 10 mA•cm^–2 and a Tafel slope of 48.3 mV•dec^–1). Balance design between S-vacancy concentration and charge transport ability provides a reference to construct high performance transition-metal dichalcogenides (TMDs) based electrocatalysts.

677–684

High mass loading Ni₄Co₁-OH@CuO core-shell nanowire arrays obtained by electrochemical reconstruction for alkaline energy storage

Yawei Yu, Xiulan Hu^*, Shuai Wang, Handan Qiao, Zeyu Liu, Kefan Song, and Xiaodong Shen^*

Nanjing Tech University, China

High mass loading porous Ni₄Co₁-OH nanosheets are obtained by replacing the NO₃^–anions in the Ni₄Co₁-(NO₃)₂(OH)₄ precursors with OH^– anions in the alkaline electrolyte via an electrochemical reconstruction. Thanks to the novel core-shell heterostructures and appropriate Ni/Co ratio, assembled alkaline hybrid supercapacitor and Ni-Zn battery deliver high energy density of 293.1 and 604.9 Wh•kg^–1, respectively, indicating excellent alkaline energy storage performance.

685–693

Single-walled carbon nanotube based SERS substrate with single molecule sensitivity

Chenmaya Xia, Daqi Zhang, Henan Li, Sheng Li, Haoming Liu, Li Ding, Xiyan Liu, Min Lyu, Ruoming Li, Juan Yang^*, and Yan Li^*

Peking University, China

Closely spaced polyhedral gold nanocrystals (AuNCs) grown in situ with edges attaching to single-walled carbon nanotubes (SWNTs) efficiently generate surface-enhanced Raman scattering (SERS) hot spots to achieve single molecule detection.

694–700

Flexible aqueous Ca-ion full battery with super-flat discharge voltage plateau

Panpan Wang¹, Hua Wang², Zhe Chen², Junwei Wu², Jingting Luo¹, and Yan Huang^2,*

¹ Shenzhen University, China

² Harbin Institute of Technology, China

A flexible Ca-ion battery based on transition metal oxide Sn-doped In₂O₃ (ITO) anode with hydrogel electrolyte exhibited an ultra-flat output voltage around 0.8 V with a high specific capacity of 75.3 mAh•g⁻¹, posing promising application in flexible and wearable electronics.

701–708

Inverse single-site Fe₁(OH)X/Pt(111) model catalyst for preferential oxidation of CO in H₂

Chunlei Wang¹, Heloise Tissot¹, Markus Soldemo2, Junling Lu³, and Jonas Weissenrieder^1,*

¹KTH Royal Institute of Technology, Sweden

²Karlstad University, Sweden

³ University of Science and Technology of China, China

The inverse single-site iron oxide model catalyst on Pt(111) surface was achieved by a novel atomic layer deposition method using the ferrocene and oxygen gas as precursors.

709–715

Aza-BODIPY-based phototheranostic nanoagent for tissue oxygen auto-adaptive photodynamic/photothermal com-plementary therapy

Meijiao Zhao, Qin Zeng, Xipeng Li, Da Xing^*, and Tao Zhang^*

South China Normal University, China

Tumor oxygen spatial heterogeneity is a critical challenge for the photodynamic inhibition of solid tumors. Development of an intelligent agent to initiate optimal therapeutics according to the localized oxygen levels is an effective settlement. This work proposes an aza-boron dipyrromethene (BODIPY)-based platform for the optimization of cancer phototherapeutics by initiating photodynamic therapy (PDT) to the peripheral tumor cells and photothermal therapy (PTT) to the deep hypoxic tumor cells.

716–727

Co-delivery of TRAIL and paclitaxel by fibronectin-targeting liposomal nanodisk for effective lung melanoma metastasis treatment

Shiqi Huang, Lang Deng, Hanming Zhang, Luyao Wang, Yicong Zhang, Qing Lin, Tao Gong, Xun Sun, Zhirong Zhang^*, and Ling Zhang^*

Sichuan University, China

The current work has designed a new multifunctional fibronectin-targeted nanodisk system to treat lung metastasis of melanoma for upregulation of death receptors and as a result of high efficacy melanoma cancer therapy.