《纳米研究》2018年第12期目录

From: 编辑部 NanoResearch

Nano Research

Review Article

Nanodendrites of platinum-group metals for electrocatalytic applications

Nitin K. Chaudhari¹, Jinwhan Joo¹, Hyuk-bu Kwon¹, Byeongyoon Kim¹, Ho Young Kim², Sang Hoon Joo^2,*, and Kwangyeol Lee^1,*

¹ Korea University, Republic of Korea

² Ulsan National Institute of Science and Technology (UNIST), Republic of Korea

This review addresses the recent developments in the synthesis and electrocatalytic applications of nanodendrites of Pt-group metals.

6111–6140

Research Articles

Versatile multiplexed super-resolution imaging of nanostructures by Quencher-Exchange-PAINT

Tobias Lutz¹, Alexander H. Clowsley¹, Ruisheng Lin¹, Stefano Pagliara¹, Lorenzo Di Michele², and Christian Soeller^1,*

¹ University of Exeter, UK

²University of Cambridge, UK

Multiplexed optical super-resolution imaging based on DNA nanotechnology (Exchange-PAINT) was refined to enable shorter switching times and imaging in conventional fluorescence microscopy setups by blocking unwanted imager strands with complementary quencher strands.

6141–6154

Simultaneous growth of carbon nanotubes on inner/outer surfaces of porous polyhedra: Advanced sulfur hosts for lithium-sulfur batteries

Hengyi Lu^1,2, Chao Zhang¹, Youfang Zhang², Yunpeng Huang², Mingkai Liu^3,*, and Tianxi Liu^1,2,*

¹ Donghua University, China

² Fudan University, China

³Jiangsu Normal University, China

Hollow cobalt-containing carbon polyhedra, with in situ grown N-doped carbon nanotubes (N-CNTs) on both inner and outer surfaces (NCCNT-Co), are designed, synthesized, and then applied as unique sulfur hosts for lithium-sulfur batteries.

6155–6166

Background-free latent fingerprint imaging based on nanocrystals with long-lived luminescence and pH-guided recognition

Zhiheng Li¹, Qian Wang¹, Yingqian Wang¹, Qinqin Ma¹, Jie Wang¹, Zhihao Li¹, Yingxue Li¹, Xiaobo Lv¹, Wei Wei², Lang Chen¹, and Quan Yuan^1,*

¹ Wuhan University, China

² Institute of Process Engineering, Chinese Academy of Sciences, China

A background-free, nondestructive, and easy-to-perform method has been developed for latent fingerprint imaging based on Zn₂GeO₄:Mn nanorods with long-lived luminescence and pH-guided recognition.

6167–6176

Self-immolative micellar drug delivery:The linker matters

Xuan Meng¹, Min Gao¹, Jian Deng¹, Di Lu¹, Aiping Fan¹, Dan Ding², Deling Kong², Zheng Wang¹, and Yanjun Zhao^1,*

¹ Tianjin University, China

²Nankai University, China

The linker length can dramatically affect the drug release kinetics from redox-responsive polymer-drug conjugate micelles.

6177–6189

Tuning the morphology of chevron-type graphene nanoribbons by choice of annealing temperature

Yun Cao¹, Jing Qi¹, Yan-Fang Zhang¹, Li Huang¹, Qi Zheng¹, Xiao Lin¹, Zhihai Cheng², Yu-Yang Zhang^1,3, Xinliang Feng^4,5,*, Shixuan Du^1,*, Sokrates T. Pantelides^1,3, and Hong-Jun Gao¹

¹ Institute of Physics & University of Chinese Academy of Sciences, Chinese Academy of Sciences, China

² Renmin University of China, China

³ Vanderbilt University, USA

⁴ Technische Universität Dresden, Germany

⁵ Shanghai Jiao Tong University, China

Using a precursor monomer containing sulfur atoms, we fabricated one-dimensional (1D) nanostructures on a Au(111) surface at different annealing temperatures through bottom-up methodology. The 1D nanostructures have distinct configurations, varying from sulfur-doped polymers to sulfur-doped chevron-type graphene nanoribbons (CGNRs) and finally, pristine graphene nanoribbons with specific edges of periodic five-member carbon rings.

6190–6196

A new sodium iron phosphate as a stable high-rate cathode material for sodium ion batteries

Xiaobo Zhu¹, Takashi Mochiku², Hiroki Fujii², Kaibin Tang³, Yuxiang Hu¹, Zhenguo Huang⁴, Bin Luo¹, Kiyoshi Ozawa², and Lianzhou Wang^1,*

¹The University of Queensland, Australia

²National Institute for Materials Science, Japan

³University of Science and Technology of China, China

⁴University of Technology Sydney, Australia

A new Na_0.71Fe_1.07PO₄ structure is reported to exhibit an extremely small volume change (~ 1%) upon Na ion (de)intercalation. As a result, it shows exceptionally stable, high-rate performance when applied as a cathode material for sodium ion batteries.

6197–6205

Amine-assisted synthesis of FeS@N-C porous nanowires for highly reversible lithium storage

Xiujuan Wei, Xin Tan, Jiasheng Meng, Xuanpeng Wang, Ping Hu, Wei Yang, Shuangshuang Tan, Qinyou An^*, and Liqiang Mai^*

Wuhan University of Technology, China

Iron sulfide porous nanowires confined in an N-doped carbon matrix (FeS@N-C nanowires) are synthesized via a facile amine- assisted solvothermal reaction followed by an annealing process. With a shortened ion diffusion distance, a continuous electron transport pathway, and an excellent stress relaxation, the FeS@N-C nanowire electrode exhibits excellent cycling stability and superior rate capability in lithium-ion batteries.

6206–6216

E-beam manipulation of Si atoms on graphene edges with an aberration-corrected scanning transmission electron microscope

Ondrej Dyck^1,*, Songkil Kim², Sergei V. Kalinin¹, and Stephen Jesse¹

¹ Oak Ridge National Laboratory, USA

² Pusan National University, Republic of Korea

In situ scanning transmission electron microscopy experiments were performed to manipulate Si atoms attached to graphene edges. We show how they may be removed from the edge, reattached, moved from the edge into the bulk, and the reverse process. We also demonstrate e-beam mediated graphene hole healing.

6217–6226

Intrinsic excitonic emission and valley Zeeman splitting in epitaxial MS₂ (M = Mo and W) monolayers on hexagonal boron nitride

Chunxiao Cong^1,*, Chenji Zou², Bingchen Cao², Lishu Wu², Jingzhi Shang^2,*, Haomin Wang³, Zhijun Qiu^1,*, Laigui Hu¹, Pengfei Tian¹, Ran Liu¹, and Ting Yu^2,*

¹ Fudan University, China

² Nanyang Technological University, Singapore

³ Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, China

We developed a method for directly growing epitaxial WS₂ and MoS₂ monolayers on hexagonal boron nitride (hBN) flakes with a high yield and high optical quality; they exhibit better intrinsic light emission features than exfoliated monolayers from natural crystals. The valley Zeeman splitting of WS₂ and MoS₂ monolayers on hBN have been visualized and systematically investigated.

6227–6236

Aminosaccharide–gold nanoparticle assemblies as narrow-spectrum antibiotics against methicillin-resistant Staphylococcus aureus

Xinglong Yang^1,2,3, Lingmin Zhang¹, and Xingyu Jiang^1,3,*

¹ National Center for NanoScience and Technology, China

²University of Jinan, China

³ University of Chinese Academy of Sciences, China

We report a series of narrow-spectrum antibacterial gold nanoparticle (AuNP)-based multivalent aminosaccharides that can kill methicillin- resistant Staphylococcus aureus (MRSA) selectively.

6237–6243

A novel PMA/PEG-based composite polymer electrolyte for all-solid-state sodium ion batteries

Xuejing Zhang¹, Xingchao Wang^1,2, Shuang Liu¹, Zhanliang Tao^1,*, and Jun Chen¹

¹ Nankai University, China

²Xinjiang University, China

A novel polymer electrolyte system was used in Na‖CPE‖Na₃V₂(PO₄)₃ all-solid-state sodium ion batteries with excellent electrochemical performance.

6244–6251

Probing magnetic-proximity-effect enlarged valley splitting in monolayer WSe₂ by photoluminescence

Chenji Zou^1,2, Chunxiao Cong^3,*, Jingzhi Shang², Chuan Zhao⁴, Mustafa Eginligil⁵, Lishu Wu², Yu Chen², Hongbo Zhang², Shun Feng², Jing Zhang², Hao Zeng^4,*, Wei Huang^1,5,*, and Ting Yu^2,*

¹Northwestern Polytechnical University (NPU), China

² Nanyang Technological University, Singapore

³ Fudan University, China

⁴ State University of New York, USA

⁵ Nanjing Tech University (NanjingTech), China

The enhanced valley splittings of A excitons and trions in monolayer WSe₂ on the EuS substrate are carefully studied by circular-polarization-resolved magneto-photoluminescence measurements compared with that in monolayer WSe₂ on the bare SiO₂/Si substrate. The enhanced valley splitting which originates from magnetic proximity effect can be beneficial for future valleytronics.

6252–6259

Porphyrin-like Fe-N4 sites with sulfur adjustment on hierarchical porous carbon for different rate-determining steps in oxygen reduction reaction

Konglin Wu^1,3, Xin Chen², Shoujie Liu^1,3, Yuan Pan¹, Weng-Chon Cheong¹, Wei Zhu¹, Xing Cao¹, Rongan Shen¹, Wenxing Chen¹, Jun Luo⁴, Wensheng Yan⁵, Lirong Zheng⁶, Zheng Chen^1,*, Dingsheng Wang¹, Qing Peng¹, Chen Chen^1,*, and Yadong Li¹

¹ Tsinghua University, China

² University of Science and Technology Beijing, China

³ Anhui Normal University, China

⁴ Tianjin University of Technology, China

⁵ University of Science and Technology of China, China

⁶ Institute of High Energy Physics, Chinese Academy of Science, China

A coordination polymer strategy synthesized single-atom site Fe/N and S-codoped hierarchical porous carbon (Fe₁/N,S-PC). As-obtained Fe1/N,S-PC exhibited superior oxygen reduction reaction (ORR) performance with a half-wave potential (E1/2, 0.904 V vs. RHE) that was better than that of commercial Pt/C (E₁_/2, 0.86 V vs. RHE) and many other nonprecious metal catalysts in alkaline medium.

6260–6269

Optimized nanoparticle-mediated delivery of CRISPR- Cas9 system for B cell intervention

Min Li¹, Ya-Nan Fan¹, Zhi-Yao Chen¹, Ying-Li Luo¹, Yu-Cai Wang¹, Zhe-Xiong Lian², Cong-Fei Xu^2,*, and Jun Wang^2,*

¹ University of Science and Technology of China, China

² South China University of Technology, China

We prepared a library of nanoparticles with different properties and screened the uptake of an optimized nanoparticle by B cells. We encapsulated the clustered regularly interspaced short palindromic repeats (CRISPR)-Cas9 system into the optimized nanoparticle for arthritis treatment.

6270–6282

Enhanced efficiency in lead-free bismuth iodide with post treatment based on a hole-conductor-free perovskite solar cell

Jongmoon Shin¹, Maengsuk Kim², Sujeong Jung¹, Chang Su Kim¹, Jucheol Park³, Aeran Song⁴, Kwun-Bum Chung⁴, Sung-Ho Jin^5,*, Jun Hee Lee^2,*, and Myungkwan Song^1,*

¹Korea Institute of Materials Science (KIMS), Republic of Korea

² Ulsan National Institute of Science & Technology (UNIST), Republic of Korea

³ Future Strategy Research Institute, Republic of Korea

⁴Dongguk University, Republic of Korea

⁵Pusan National University, Republic of Korea

The ABi₃I₁₀ perovskite composite improved the surface morphology and the extended absorption spectrum. The perovskite solar cell (PSC)-based CsBi3I10 film exhibited a power conversion efficiency (PCE) of 1.51% (J_sc ≈ 4.75 mA/cm2; V_oc ≈ 0.46 V; FF ≈ 69.1%). Thus, the ABi3I10 perovskite material can be used as a novel material for Pb-free PSCs.

6283–6293

Molten-salt chemical exfoliation process for preparing two-dimensional mesoporous Si nanosheets as high-rate Li-storage anode

Ying Han, Jie Zhou, Tieqiang Li, Zheng Yi, Ning Lin^*, and Yitai Qian^*

University of Science and Technology of China, China

A molten-salt chemical exfoliation methodology is developed for producing free-standing two-dimensional (2D) mesoporous Si nanosheets through deintercalation of CaSi₂ in excess molten AlCl3 at 195 °C. Owing to their unique structure, the as-prepared Si nanosheets exhibit superior electrochemical characteristics for Li-ion batteries such as a high rate capacity and long cycling life.

6294–6303

Single-layer Rh nanosheets with ultrahigh peroxidase- like activity for colorimetric biosensing

Shuangfei Cai¹, Wei Xiao¹, Haohong Duan², Xixi Liang³, Chen Wang^1,*, Rong Yang^1,*, and Yadong Li³

¹ University of Chinese Academy of Sciences, China

² University of Oxford, UK

³ Tsinghua University, China

Single-layer Rh nanosheets (NSs) demonstrated high efficiency as peroxidase-mimic catalysts obeying typical Michaelis-Menten kinetics, with a record-high catalytic rate constant (K_cat) of 4.45 × 10⁵ s^–1 to H₂O₂, two orders of magnitude higher than that of horseradish peroxidase (HRP). This could be ascribed to the unique single-layer nanostructure of the Rh NSs, with full exposure of surface-active Rh atoms.

6304–6315

Intelligent identification of two-dimensional nanostructures by machine-learning optical microscopy

Xiaoyang Lin^1,*, Zhizhong Si¹, Wenzhi Fu¹, Jianlei Yang¹, Side Guo¹, Yuan Cao¹, Jin Zhang², Xinhe Wang^1,2, Peng Liu², Kaili Jiang², and Weisheng Zhao^1,*

¹ Beihang University, China

² Tsinghua University, China

The successful application of machine-learning strategy for the optical identification of two-dimensional (2D) nanostructures is reported. The machine-learning optical identification method endows optical microscopy with intelligent insight into the characteristic color information of 2D nanostructures in the optical photograph.

6316–6324

A topologically substituted boron nitride hybrid aerogel for highly selective CO₂ uptake

R. Govindan Kutty¹, Sivaramapanicker Sreejith², Xianghua Kong³, Haiyong He¹, Hong Wang¹, Junhao Lin⁴, Kazu Suenaga⁴, Chwee Teck Lim², Yanli Zhao^1,*, Wei Ji^3,*, and Zheng Liu^1,*

¹ Nanyang Technological University, Singapore

² National University of Singapore, Singapore

³Renmin University of China, China

⁴National Institute of Advanced Industrial Science and Technology (AIST), Japan

A study which delineated the selective CO₂ adsorption capability of boron nitride aerogel in a CO₂/N₂ mixture was conducted.

6325–6335

Tunable electrochemistry of gold-silver alloy nanoshells

Lorenzo Russo^1,2, Victor Puntes^1,3,4, and Arben Merkoçi^1,4,*

¹ CSIC and BIST, Campus UAB, Spain

² Universitat Autònoma de Barcelona (UAB), Spain

³ Vall d’Hebron Institut de Recerca (VHIR), Spain

⁴Institució Catalana de Recerca i Estudis Avançats (ICREA), Spain

The electrochemical properties of hollow AuAg alloy nanoshells (NSs) with finely tunable morphology, composition, and size are studied. Through their controlled corrosion the generation of a reproducible and tunable electrochemical signal is achieved. Remarkably, the underpotential deposition of Ag⁺ onto AuAg NSs surfaces is observed and its dependence on nanoparticle morphology, size, and elemental composition is studied, revealing a strong correlation with the relative amount of the two metals.

6336–6345

Nanoscopic imaging of oxidized graphene monolayer using tip-enhanced Raman scattering

Joseph M. Smolsky and Alexey V. Krasnoslobodtsev^*

University of Nebraska at Omaha, USA

Oxidation tunes various properties of graphene by changing carbon from sp² to sp³ type. Such a change is detectable with Raman spectroscopy. Tip-enhanced Raman scattering—a method that combines Raman spectroscopy with scanning probe microscopy can detect localized oxidation and induce oxidation sites on graphene with subnanometer spatial precision.

6346–6359

Particle-size-dependent upconversion luminescence of NaYF₄: Yb, Er nanoparticles in organic solvents and water at different excitation power densities

Marco Kraft¹, Christian Würth¹, Verena Muhr², Thomas Hirsch², and Ute Resch-Genger^1,*

¹ Federal Institute for Materials Research and Testing (BAM), Germany

²University of Regensburg, Germany

The diminution of the luminescence of NaYF₄: Yb, Er upconversion nanocrystals by common quenchers, such as C–H and O–H, is quantified for different particle sizes and excitation powers.

6360–6374

Integration of two-dimensional morphology and porous surfaces to boost methanol electrooxidation performances of PtAg alloy nanomaterials

Changshuai Shang^1,2, Yaxiao Guo^1,2, and Erkang Wang^1,2,*

¹ Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, China

² University of Chinese Academy of Sciences, China

PtAg porous nanosheets exhibit superior catalytic properties for methanol electrooxidation owing to their unique architecture and the introduction of Ag.

6375–6383

Plasmon-directed polymerization: Regulating polymer growth with light

Yunxia Wang¹, Shuangshuang Wang¹, Shunping Zhang¹, Oren A. Scherman², Jeremy J. Baumberg², Tao Ding^1,2,*, and Hongxing Xu¹

¹Wuhan University, China

² University of Cambridge, UK

Polymerization via plasmon-excited hot electrons enables controllable polymer growth with nanoscale precision. The polarization-dependent near-field profile around gold nanoparticles guides the polymer growth into anisotropic features with local selectivity, which significantly advances the control of polymer growth at nanoscale.

6384–6390

Exceptional co-catalyst free photocatalytic activities of B and Fe co-doped SrTiO₃ for CO₂ conversion and H2 evolution

Muhammad Humayun, Lei Xu, Ling Zhou, Zhiping Zheng, Qiuyun Fu, and Wei Luo^*

Huazhong University of Science and Technology, China

Boron and Fe co-doped SrTiO₃ (B, F-STO) as a novel photocatalyst has been successfully synthesized for the first time via a single-step sol-hydrothermal process; it exhibits exceptional co-catalyst free photocatalytic activities for CO₂ conversion to CH₄ and CO and H₂O splitting to evolve H₂ under UV–vis irradiation.

6391–6404

Electrochemically driven phenothiazine modification of carbon nanodots

Mónica Mediavilla¹, Emiliano Martínez-Periñán¹, Iria Bravo^1,2, Tania García-Mendiola^1,2, Mónica Revenga- Parra^1,2, Félix Pariente^1,2, and Encarnación Lorenzo^1,2,*

¹ Universidad Autónoma de Madrid, Spain

² Instituto Madrileño de Estudios Avanzados (IMDEA) Nanociencia, Spain

Electrografting of Azure A diazonium salt on C-nanodots immobilized on a gold electrode was studied. Elucidation of the electrochemical mechanism by spectroelectrochemistry and application of modified C-nanodots as electrocatalysts towards the oxidation of hydrazine were investigated.

6405–6416

Highly fluorescent, photostable, and biocompatible silicon theranostic nanoprobes against Staphylococcus aureus infections

Xia Zhai, Bin Song, Binbin Chu, Yuanyuan Su, Houyu Wang*, and Yao He^*

Soochow University, China

We herein present a silicon nanoparticle-based theranostic probe, superbly suitable for actively targeted, noninvasive, prolonged fluorescence imaging, and treatment of Staphylococcus aureus infections.

6417–6427

Nanoporous magnesium

Ilya Vladimirovich Okulov^1,2,*, Sviatlana V. Lamaka³, Takeshi Wada¹, Kunio Yubuta¹, Mikhail L. Zheludkevich^3,4, Jörg Weissmüller^2,5, Jürgen Markmann^2,5, and Hidemi Kato¹

¹ Tohoku University, Japan

² Institute of Materials Research, Materials Mechanics, Helmholtz- Zentrum Geesthacht, Germany

³MagIC—Magnesium Innovation Centre, Helmholtz-Zentrum Geesthacht, Germany

⁴University of Kiel, Germany

⁵Hamburg University of Technology, Germany

In this study, we present freestanding nanoporous magnesium as a novel lightweight material with high potential for structural and functional applications. Our synthesis approach is very flexible and we demonstrate that versatile microstructures of the nanoporous magnesium—e.g., nanoscale bicontinuous network, hierarchical, and plate-like structures—can be designed upon the given needs.

6428–6435

Three-dimensional spongy framework as superlyophilic, strongly absorbing, and electrocatalytic polysulfide reservoir layer for high-rate and long-cycling lithium-sulfur batteries

Lianbo Ma¹, Guoyin Zhu¹, Wenjun Zhang¹, Peiyang Zhao¹, Yi Hu¹, Yanrong Wang¹, Lei Wang¹, Renpeng Chen¹, Tao Chen¹, Zuoxiu Tie¹, Jie Liu^1,2, and Zhong Jin^1,*

¹ Nanjing University, China

²Duke University, USA

A three-dimensional functional spongy framework is adopted as polysulfide reservoir layer in the configuration design of Li-S batteries. Li-S batteries assembled with a Ni foam/graphene/carbon nanotubes/MnO2 nanoflakes (NGCM) spongy framework show significantly enhanced electrochemical performance.

6436–6446

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