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《纳米研究》2018年第2期目录

Nano Research NanoResearch

Nano Research


Contents


Research Articles


Hydrogen evolution activity enhancement by tuning the oxygen vacancies in self-supported mesoporous spinel oxide nanowire arrays

Dali Liu1,2, Chao Zhang1, Yifu Yu1,3, Yanmei Shi1, Yu Yu1, Zhiqiang Niu3, and Bin Zhang1,2,3,* 

1 Tianjin University, China

2 Collaborative Innovation Center of Chemical Science and Engineering, China

3 Nankai University, China

This work opens a new avenue for the controlled generation of oxygen vacancies in mesoporous traditional metal oxides for efficient self-supported water reduction electrocatalysis.


603–613





Unique role of non-mercapto groups in thiol-pinningmediated Ag growth on Au nanoparticles

Jiaqi Chen1,2, Jiao Yan1,2, Yuandong Chen1,2, Shuai Hou1, Yinglu Ji1, and Xiaochun Wu1,*

1 National Center for Nanoscience and Technology, China

2 University of Chinese Academy of Sciences, China

Exposed –NH2(NH3+) groups from adsorbed cysteine can bind Ag+ and subsequently accelerate Ag overgrowth on the Au surface.


614–624





In situ atomic-scale analysis of Rayleigh instability in ultrathin gold nanowires

Shang Xu1, Peifeng Li1,2, and Yang Lu1,3,*

1 City University of Hong Kong, Hong Kong, China

2 Zhejiang University, China

3 Hong Kong Branch of National Precious Metals Material Engineering Research Center (NPMM), Hong Kong, China

Rayleigh instability was observed in ultrathin gold nanowires upon moderate heating, which offers critical insights towards their reliable applications in nanoelectronics.


625–632





Triboelectric nanogenerator based on magnetically induced retractable spring steel tapes for efficient energy harvesting of large amplitude motion

Guanlin Liu, Jie Chen, Hengyu Guo, Meihui Lai, Xianjie Pu, Xue Wang, and Chenguo Hu*

Chongqing University, China

A magnetically induced retractable triboelectric nanogenerator that utilizes a magnet and spring steel tapes to efficiently harvest energy from large amplitude motion has been designed and fabricated.


633–641





Domain-engineered BiFeO3 thin-film photoanodes for highly enhanced ferroelectric solar water splitting

Jaesun Song1, Taemin Ludvic Kim2, Jongmin Lee1, Sam Yeon Cho3, Jaeseong Cha1, Sang Yun Jeong1, Hyunji An1, Wan Sik Kim1, Yen-Sook Jung1, Jiyoon Park1, Gun Young Jung1, Dong-Yu Kim1, Ji Young Jo1, Sang Don Bu3, Ho Won Jang2,*, and Sanghan Lee1,*

1 Gwangju Institute of Science and Technology (GIST), Republic of Korea

2 Seoul National University, Republic of Korea

3 Chonbuk National University, Republic of Korea

The photocatalytic properties of an epitaxial (111)pc BiFeO3 thin-film photoanode in the downward polarization state are greatly enhanced in comparison with those of (001)pc and (110)pc BiFeO3 thin-film photoanodes. The significant improvement of the photocatalytic properties is provided by the enhanced ferroelectric domain switching of the mono-variant domain structure as well as the enhanced internal field afforded by higher spontaneous polarization.


642–655





Solvent-dependent evolution of cyclic penta-twinned rhodium icosahedral nanocrystals and their enhanced catalytic properties

Yanan Yang, Jiawei Zhang*, Yajing Wei, Qiaoli Chen, Zhenming Cao, Huiqi Li, Jiayu Chen, Jueli Shi, Zhaoxiong Xie*, and Lansun Zheng

Xiamen University, China

A transformation between cyclic penta-twinned and single-crystal Rh nanocrystals can be readily realized by changing the solvent. Cyclic penta-twinned Rh icosahedral nanocrystals show superior catalytic activity and stability during the electrooxidation of ethanol when compared to single-crystal tetrahedral Rh nanocrystals and commercial Rh black.


656–664





Selective oxidation mediated synthesis of unique SexTey nanotubes, their assembled thin films and photoconductivity

Yuan Yang, Guo-Qiang Liu, Min-Rui Gao, Yu Xia, and Shu-Hong Yu*

University of Science and Technology of China, China

A selective-oxidation approach was developed for synthesizing SexTey nanotubes with controlled inner and outer diameters from TexSey@Se core–shell nanowires. The nanotubes exhibited good photoconductivity over the whole ultraviolet–visible spectrum.


665–675





Gold nanoshells: Contrast agents for cell imaging by cardiovascular optical coherence tomography

Jie Hu1, Francisco Sanz-Rodríguez1,2, Fernando Rivero1, Emma Martín Rodríguez1,2,*, Río Aguilar Torres1, Dirk H. Ortgies1,2, José García Solé1, Fernando Alfonso1, and Daniel Jaque1,2

1 Universidad Autónoma de Madrid, Spain

2 Hospital Ramón y Cajal, Spain

Optical coherence tomography was used to visualize individual cells for the first time and to discriminate between cells that internalized gold nanoparticles and those that did not, suggesting potential applications for the early diagnosis of atherosclerotic lesions.


676–685





Asymmetric growth of Au-core/Ag-shell nanorods with a strong octupolar plasmon resonance and an efficient second-harmonic generation

Sijing Ding1,2, Dajie Yang1, Xiaoli Liu3, Fan Nan1, Ziqiang Cheng1, Song-Jin Im4, Li Zhou1, Jianfang Wang2,*, and Ququan Wang1,*

1 Wuhan University, China

2 The Chinese University of Hong Kong, Hong Kong, China

3 Qufu Normal University, China

4 Kim Il Sung University, Democratic People’s Republic of Korea

A strong octupolar plasmon resonance and an efficient secondharmonic generation (SHG) are obtained for the first time by an asymmetric overgrowth of silver shells on gold nanorods. The SHG intensity of the Au–Ag nanorods with dual-frequency resonances is enhanced by 21 times compared to that of bare Au nanorods with only a longitudinal plasmon resonance.


686–695





Atomic disorders in layer structured topological insulator SnBi2Te4 nanoplates 

Yi-Chao Zou1, Zhi-Gang Chen1,2,*, Enze Zhang3, Fantai Kong4, Yan Lu5, Lihua Wang1,5, John Drennan1, Zhongchang Wang6,7, Faxian Xiu3, Kyeongjae Cho4, and Jin Zou1,*

1 University of Queensland, Australia

2 University of Southern Queensland, Australia

3 Fudan University, China

4 the University of Texas at Dallas, USA

5 Beijing University of Technology, China

6 Tohoku University, Japan

7 International Iberian Nanotechnology Laboratory, Portugal

Aberration-corrected scanning transmission electron microscopy investigations, quantitative image simulations, and density functional theory calculations for chemical vapor deposition grown SnBi2Te4 nanoplates show a recognizable amount of cation antisites, characterized by a low formation energy, and cause a reduced bandgap. Angle-dependent magnetoresistance measurements from nanoplate devices reveal a two-dimensional weak antilocalization effect associated with topological surface carriers, indicating that SnBi2Te4 nanostructures are promising candidates for spintronic and electronic applications.


696–706





Three-layer phosphorene-metal interfaces

Xiuying Zhang1, Yuanyuan Pan1, Meng Ye1, Ruge Quhe2, Yangyang Wang1,3, Ying Guo4, Han Zhang1, Yang Dan1, Zhigang Song1, Jingzhen Li1, Jinbo Yang1,5, Wanlin Guo6, and Jing Lu1,5,*

1 Peking University, China

2 Beijing University of Posts and Telecommunications, China

3 China Academy of Space Technology, China

4 Shaanxi Sci-Tech University, China

5 Collaborative Innovation Center of Quantum Matter, China

6 Nanjing University of Aeronautics and Astronautics, China

Schottky barriers in the three-layer phosphorene-metal interfaces are determined by ab initio quantum transport simulations, and the results agree with the experiments.


707–721





High-performance multilayer WSe2 field-effect transistors with carrier type control

Pushpa Raj Pudasaini1,2, Akinola Oyedele1,2, Cheng Zhang1,2, Michael G. Stanford1, Nicholas Cross1, Anthony T. Wong1, Anna N. Hoffman1, Kai Xiao2, Gerd Duscher1,2, David G. Mandrus1,2, Thomas Z. Ward2, and Philip D. Rack1,2,*

1 University of Tennessee, USA

2 Oak Ridge National Laboratory, USA

High-performance few-layer WSe2 field-effect transistor devices with carrier type control are demonstrated via thickness modulation and a remote oxygen plasma surface treatment.


722–730





Enhanced electrical and optical properties of singlelayered MoS2 by incorporation of aluminum

Hyung-Jun Kim1,2, Suk Yang1,2, Hojoong Kim1,2, Jin Young Moon2, Kyung Park2, Yun-Jin Park1,2, and Jang-Yeon Kwon1,2,*

1 Yonsei University, Republic of Korea

2 Yonsei I nstitute of Convergence Technology, Republic of Korea

We demonstrate the effect of Al incorporation through atomically deposited Al2O3 films on synthesized MoS2 obtained using chemical vapor deposition (CVD), which significantly contributed to the enhanced performance of MoS2 field-effect transistor (FET) devices.


731–740





Chemically doped macroscopic graphene fibers with significantly enhanced thermoelectric properties

Weigang Ma1, Yingjun Liu2, Shen Yan1, Tingting Miao3, Shaoyi Shi1, Zhen Xu2, Xing Zhang1,*, and Chao Gao2,* 

1 Tsinghua University, China

2 Zhejiang University, China

3 China University of Petroleum-Beijing, China

In this study, bromine doping is reported to be an effective method to significantly enhance the thermoelectric properties of macroscopic graphene fibers. The maximum ZT is 2.76 × 10–3, which is approximately four orders of magnitude larger than that of the undoped fibers; the room temperature power factor is shown to increase up to 624 μW·m–1·K–2, which is higher than any other material solely composed of carbon nanotubes and graphene reported in the literature.


741–750





Defective molybdenum sulfide quantum dots as highly active hydrogen evolution electrocatalysts

Gang Ou1, Peixun Fan1, Xiaoxing Ke2, Yushuai Xu1, Kai Huang1, Hehe Wei1, Wen Yu1, Hongjun Zhang1, Minlin Zhong1,*, Hui Wu1,*, and Yadong Li1

1 Tsinghua University, China

2 Beijing University of Technology, China

Defective molybdenum sulfide quantum dots synthesized by a facile and general ultrafast laser ablation method show highly enhanced activity and stability in the electrocatalytic hydrogen evolution reaction, owing to their very large surface area, defective structure, abundance of active sites, and high conductivity.


751–761





Enhanced stabilization of inorganic cesium lead triiodide (CsPbI3) perovskite quantum dots with tri-octylphosphine

Chang Lu, Hui Li, Kathy Kolodziejski, Chaochao Dun, Wenxiao Huang, David Carroll, and Scott M. Geyer*

Wake Forest University, USA

Through the addition of tri-octylphosphine as part of the postsynthesis treatment, we significantly enhance the stability of CsPbI3 quantum dots, from hours to months. This method helps to resolve the intrinsic instability issue of triiodide  erovskite materials and devices.


762–768





Copper nanowire/multi-walled carbon nanotube composites as all-nanowire flexible electrode for fast-charging/discharging lithium-ion battery

Zhenxing Yin1, Sanghun Cho1, Duck-Jae You1, Yong-keon Ahn1, Jeeyoung Yoo1,*, and Youn Sang Kim1,2,* 

1 Seoul National University, Republic of Korea

2 Advanced Institutes of Convergence Technology, Republic of Korea

A novel lightweight three-dimensional composite anode was fabricated using entirely one-dimensional nanomaterials, i.e., Cu nanowires (CuNWs) and multi-walled carbon nanotubes (MWCNTs). Half-cell and full-cell Li-ion batteries (LIBs) employing this composite anode exhibited high specific capacities and Coulombic efficiencies even at a high current density. More importantly, for the first time we overcame the limitations of MWCNTs as anode materials for fast-charging/discharging half-cell and full-cell LIBs by employing CuNWs, and the resulting anode can be applied to flexible LIBs.


769–779





Construction of Pd-M (M = Ni, Ag, Cu) alloy surfaces for catalytic applications

Xiang Li1, Xixi Wang1, Maochang Liu1, Hongyang Liu2, Qiang Chen1,3,*, Yadong Yin4, and Mingshang Jin1,*

1 Xi’an Jiaotong University, China

2 Institute of Metal Research, Chinese Academy of Sciences, China

3 Beijing University of Chemical Technology, China

4 University of California, Riverside, USA

Through the approach described in this work, second-metal elements can be alloyed into the surface of Pd nanocrystals directly to modify the catalytic performances of Pd nanocrystals.


780–790





Highly sensitive and rapidly responding room-temperature NO2 gas sensors based on WO3 nanorods/sulfonated graphene nanocomposites

Tingting Wang, Juanyuan Hao*, Shengliang Zheng, Quan Sun, Di Zhang, and You Wang*

Harbin Institute of Technology, China

In this study, a highly sensitive and rapidly responding roomtemperature NO2 gas sensor based on WO3 nanorods/sulfonated reduced graphene oxide (S-rGO) was developed using a simple and cost-effective hydrothermal method. 


791–803





Morphology-dependent catalytic properties of nanocupric oxides in the Rochow reaction

Yu Zhang1,2, Yongjun Ji1,*, Jing Li1,2, Hezhi Liu1, Xiao Hu3, Ziyi Zhong3, and Fabing Su1

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

2 University of Chinese Academy of Sciences, China

3 Nanyang Technological University, Singapore

Leaf-like CuO that mainly exposes the {001} crystal plane showed superior catalytic properties for dimethyldichlorosilane synthesis via the Rochow reaction owing to the maximum formation of the Cu3Si alloy phase generated in the reacted region of the Si surface.


804–819





Facile preparation of pristine graphene using urea/glycerol as efficient stripping agents

Jianping Chen1,2, Weili Shi1, Zhaodongfang Gao1, Tao Wang1, Shan Wang1, Lijie Dong1, Quanling Yang1,*, and Chuanxi Xiong1,*

1 Wuhan University of Technology, China

2 Henan University, China

Natural graphite is exfoliated to produce large-size and few-layer graphene sheets in urea/glycerol solution via a simple mechanical stirring method. The incorporation of only a small amount of the as-prepared graphene films into polyvinylidene fluoride leads to a high increase in thermal conductivity.


820–830





Self-templating thermolysis synthesis of Cu2–xS@M (M = C, TiO2, MoS2) hollow spheres and their application in rechargeable lithium batteries

Yunhui Wang, He Li, Yiyong Zhang, Yueying Peng, Peng Zhang, and Jinbao Zhao* 

Xiamen University, China

A self-templating thermolysis strategy is employed to prepare different Cu2–xS@M (M = C, TiO2, MoS2) hollow structures. All composites are assembled as electrodes and tested in lithium batteries, showing excellent electrochemical performances.


831–844





Two-photon lithography for 3D magnetic nanostructure fabrication

Gwilym Williams1, Matthew Hunt1, Benedikt Boehm2, Andrew May1, Michael Taverne3, Daniel Ho3, Sean Giblin1, Dan Read1, John Rarity3, Rolf Allenspach2, and Sam Ladak1,*

1 Cardiff University, UK

2 IBM Research - Zurich, Switzerland

3 University of Bristol, UK

A combination of two-photon lithography and electrochemical deposition is utilized to fabricate three-dimensional magnetic nanostructures. Magnetometry and magnetic imaging show evidence of domain wall pinning at the three-dimensional (3D) nanostructured junction.


845–854





Thickness-dependent phase transition and optical behavior of MoS2 films under high pressure

Xuerui Cheng1, Yuanyuan Li2, Jimin Shang1, Chuansheng Hu2, Yufen Ren1, Miao Liu3,*, and Zeming Qi2,*

1 Zhengzhou University of Light Industry, China

2 University of Science and Technology of China, China

3 Lawrence Berkeley National Laboratory, USA

The structure and optical properties of layered MoS2 can be effectively modified by pressure. The Raman and photoluminescence spectra of MoS2 with different thicknesses show distinct pressure dependencies.


855–863





Atomic and electronic structure of Si dangling bonds in quasi-free-standing monolayer graphene

Yuya Murata1, Tommaso Cavallucci1, Valentina Tozzini1, Niko Pavliček2, Leo Gross2, Gerhard Meyer2, Makoto Takamura3, Hiroki Hibino3,†, Fabio Beltram1, and Stefan Heun1,*

1 Istituto Nanoscienze-CNR and Scuola Normale Superiore, Italy

2 IBM Research - Zurich, Switzerland

3 NTT Basic Research Laboratories, Japan

Present address: Kwansei Gakuin University, Japan

The structural and electronic properties of defects in quasi-freestanding monolayer graphene (QFMLG) were studied by lowtemperature scanning tunneling microscopy/spectroscopy and atomic force microscopy. The comparison of the experimental results with density functional theory calculations indicates that the defects consist of clusters of Si dangling bonds. The results of the present work provide the basis for a rational design of high-mobility QFMLG.


864–873





Mesoporous H-ZSM-5 nanocrystals with programmable number of acid sites as “solid ligands” to activate Pd nanoparticles for C–C coupling reactions

Wenyu Ke, Tianlu Cui, Qiuying Yu, Mengying Wang, Libing Lv, Honghui Wang, Zhidong Jiang, Xinhao Li*, and Jiesheng Chen*

Shanghai Jiao Tong University, China

Mesoporous H-ZSM-5 nanocrystals with a significant number of acid sites can function as “solid ligands” to activate the embedded Pd nanoparticles for C–C coupling reactions.


874–881





High-mobility air-stable n-type field-effect transistors based on large-area solution-processed organic singlecrystal arrays

Liang Wang, Xiujuan Zhang, Gaole Dai, Wei Deng, Jiansheng Jie*, and Xiaohong Zhang

Soochow University, China

A simple and efficient solution-processed approach is provided for achieving the growth of large-area highly aligned n-type singlecrystalline organic submicron ribbon arrays. N-channel organic field-effect transistors (n-OFETs) fabricated based on the submicron ribbon arrays exhibit a high electron mobility of 2.67 cm2·V–1·s–1 as well as robust air stability for over 50 days.


882–891





Electrosprayed porous Fe3O4/carbon microspheres as anode materials for high-performance lithium-ion batteries

Wenjie Han1, Xianying Qin1,2,*, Junxiong Wu2, Qing Li1, Ming Liu1, Yue Xia1, Hongda Du1, Baohua Li1,*, and Feiyu Kang1

1 Tsinghua University, China

2 The Hong Kong University of Science and Technology, Hong Kong, China

Porous Fe3O4/carbon microspheres (PFCMs) are successfully fabricated via a facile electrospray method and subsequent heat treatment. As anode materials for Li-ion batteries, PFCMs deliver a high capacity, long cycling life, and outstanding rate performance due to the hybrid, porous, and conductive structure.


892–904





50 ppm of Pd dispersed on Ni(OH)2 nanosheets catalyzing semi-hydrogenation of acetylene with high activity and selectivity

Mingzhen Hu1, Jian Zhang2, Wei Zhu2, Zheng Chen2, Xin Gao2, Xianjun Du2, Jiawei Wan2, Kebin Zhou1,*, Chen Chen2,*, and Yadong Li2

1 University of Chinese Academy of Sciences, China

2 Tsinghua University, China

A Pd/Ni(OH)2 catalyst with an ultra-low (0.005%) Pd loading was found to exhibit superior catalytic properties to the corresponding higher Pd-loaded nanoparticle catalyst in the selective hydrogenation of acetylene to ethylene, due to the atomically dispersed nature of the Pd sites in the 0.005% Pd/Ni(OH)2 catalyst and the supporting effect of the abundant hydroxyl groups of Ni(OH)2.


905–912





Peptide self-assembly into lamellar phases and the formation of lipid-peptide nanostructures

Karin Kornmueller1, Bernhard Lehofer1, Gerd Leitinger1, Heinz Amenitsch2, and Ruth Prassl1,*

1 Medical University of Graz, Austria

2 Graz University of Technology, Austria

Systematically varied amphiphilic designer peptides can mimic lipid lamellar phases and self-assemble into a variety of nanostructures (tubes, vesicles, bicelles) when mixed with lipids.


913–928





Acid-degradable gadolinium-based nanoscale coordination polymer: A potential platform for targeted drug delivery and potential magnetic resonance imaging

Zhimei He1, Penghui Zhang1,2, Yan Xiao1, Jingjing Li3, Fang Yang4, Yang Liu4, Jian-Rong Zhang1,*, and Jun-Jie Zhu1,*

1 Nanjing University, China

2 Xi’an Jiaotong University, China

3 Xuzhou Medical University, China

4 Southeast University, China

A precision-guided “depth bomb” for cancer cells was constructed by decorating a doxorubicin-loaded nanoscale coordination polymer with a hyaluronic acid shell. Once selectively internalized into targeted cancer cells, the nano-bomb was triggered within the acidic lysosomes and collapsed into fragments, accompanied by rapid drug release and fluorescence restoration of the drug.


929–939





DNA-directed assembly of copper nanoblocks with inbuilt fluorescent and electrochemical properties: Application in simultaneous amplification-free analysis of multiple RNA species

Kevin M. Koo, Laura G. Carrascosa, and Matt Trau* 

The University of Queensland, Australia

We developed a nanosensor that uses DNA-templated copper nanoblock synthesis for universal detection of different RNA species. We exploited the fluorescent and electrochemical properties of the synthesized copper nanoblocks to achieve simultaneous amplificationfree detection of messenger RNA, microRNA, and long non-coding RNA cancer biomarkers.


940–952





Uniform and reproducible plasmon-enhanced fluorescence substrate based on PMMA-coated, large-area Au@Ag nanorod arrays

Jun Sun, Ziyang Li, Yinghui Sun, Liubiao Zhong, Jing Huang, Junchang Zhang, Zhiqiang Liang, Jianmei Chen, and Lin Jiang*

Soochow University, China

A simple and scalable method was developed based on poly(methyl methacrylate) (PMMA)-coated Au@Ag nanorod arrays to fabricate reproducibly large-area and uniform metal-enhanced fluorescence (MEF) substrates.


953–965





Embedding ZnSe nanodots in nitrogen-doped hollow carbon architectures for superior lithium storage

Ziliang Chen1, Renbing Wu1,*, Hao Wang1, Kelvin H. L. Zhang2, Yun Song1, Feilong Wu1, Fang Fang1, and Dalin Sun1,*

1 Fudan University, China

2 Xiamen University, China

Three-dimensional hybrid hollow composites with ultrafine zinc selenide nanodots uniformly confined within a N-doped porous carbon network have been rationally developed. Owing to their structural and compositional advantages, these architectures show exceptional lithium-storage performance, with an ultrahigh reversible specific capacity and excellent rate capability.


966–978





Photocatalytic H2 evolution improvement for H free-radical stabilization by electrostatic interaction of a Cu-BTC MOF with ZnO/GO

Xifeng Shi, Jiahui Zhang, Guanwei Cui*, Ning Deng, Wen Wang, Qian Wang, and Bo Tang*

Shandong Normal University, China

Cu-benzene-1,3,5-tricarboxylate (BTC) metal-organic framework (MOF) was incorporated into the ZnO/graphene oxide (GO) photocatalytic system by an electrostatic interaction method to stabilize the H· radicals generated from a photoreduction reaction. In the proposed assembly structure, ZnO served as the photoelectron donor, and GO as the ZnO-to-Cu-BTC photoelectron-transfer channel and as the supporting matrix for ZnO and Cu-BTC. Cu-BTC was expected to serve as a microcontainer for the free radicals generated by light irradiation to extend their lifetime.


979–987





Hierarchical coral-like NiMoS nanohybrids as highly efficient bifunctional electrocatalysts for overall urea electrolysis

Xiaoxia Wang1, Jianmei Wang3, Xuping Sun2,*, Shuang Wei1, Liang Cui1, Wenrong Yang3, and Jingquan Liu1,*

1 Qingdao University, China

2 Sichuan University, China

3 Deakin University, Australia

Hierarchical coral-like Ni-Mo sulfides on Ti mesh (HC-NiMoS/Ti) were prepared and utilized as effective bifunctional electrodes for highly efficient hydrogen generation from overall urea electrolysis.


988–996





Oxidation layering mechanism of graphene-like MoS2 prepared by the intercalation-detonation method

Fan Yang1, Kuaishe Wang1, Ping Hu1,2,*, Zhenyu Chen1, Jie Deng1, Boliang Hu1, Weicheng Cao2, Dongxin Liu2, Geng An2, and Alex A. Volinsky3

1 Xi’an University of Architecture and Technology, China

2 Jinduicheng Molybdenum Co., Ltd., China

3 University of South Florida, USA

The oxidation layering mechanism of graphene-like MoS2 is proposed. The intensity ratio of B1u and A1g peaks in the Raman spectra was determined to quantify the effect of oxidative intercalation.


997–1003





Vapor-phase hydrothermal growth of single crystalline NiS2 nanostructure film on carbon fiber cloth for electrocatalytic oxidation of alcohols to ketones and simultaneous H2 evolution

Tianxing Wu1, Xiaoguang Zhu1, Guozhong Wang1,*, Yunxia Zhang1, Haimin Zhang1,*, and Huijun Zhao1,2 

1 Institute of Solid State Physics, Chinese Academy of Sciences, China

2 Griffith University, Australia

A vapor-phase hydrothermally grown NiS2 nanostructure film supported on a carbon fiber cloth (NiS2/CFC) as an electrode material exhibited superior dual electrocatalytic activities for oxygen and hydrogen evolution reactions (OER/HER) and efficiently promoted the electrocatalytic oxidation of alcohols to ketones with significantly decreased overpotentials as compared to that for the OER. This study presents a new energy conversion strategy combining high-value-added chemical production with highly efficient H2 generation by water splitting.


1004–1017





Entropy-driven self-assembly of chiral nematic liquid crystalline phases of AgNR@Cu2O hyper branched coaxial nanorods and thickness-dependent handedness transition

Guiqing Cheng, Yu Wang*, Kun Liu, and Jihong Yu* 

Jilin University, China

The chiral transition of Ag nanorod (AgNR)@Cu2O hyper branched coaxial nanorods (HBCNRs) liquid crystal can be achieved via increasing the thickness of Cu2O coating.


1018–1028





Highly sensitive hybrid nanofiber-based room-temperature CO sensors: Experiments and density functional theory simulations

Lili Wang1, Ruiqing Chai2,3, Zheng Lou2,*, and Guozhen Shen2,3,*

1 Jilin University, China

2 Institute of Semiconductors, Chinese Academy of Sciences, China

3 University of Chinese Academy of Sciences, China

We present the fabrication of a novel sensing platform based on a hybrid structure with active facets. It showed high selectivity, high sensitivity, and ultrafast response at room temperature for the detection of CO; the results were further supported by density functional theory calculations. These findings highlight the potential of metal oxide semiconductors with high-energy facets as active components for electronic devices.


1029–1037





Ultrasound-triggered release of sinoporphyrin sodium from liposome-microbubble complexes and its enhanced sonodynamic toxicity in breast cancer

Yixiang Li, Huanxiao An, Xiaobing Wang, Pan Wang*, Fei Qu, Yan Jiao, Kun Zhang, and Quanhong Liu*

Shaanxi Normal University, China

The liposome-encapsulated hydrosoluble sonosensitizer sinoporphyrin sodium (DVDMS) was coupled with microbubbles via the biotin– avidin linkage to synthesize a complex (DLMBs) that exhibits high ultrasound response. Ultrasound-induced reactive oxygen species were key mediators to trigger the boosted release of DVDMS from DLMBs and improve the cellular uptake and intratumoral diffusion of DVDMS to achieve better sonodynamic effects against breast cancer.


1038–1056





Ultrasensitive detection of Ebola matrix protein in a memristor mode

Bergoi Ibarlucea1,*, Teuku Fawzul Akbar1, Kihyun Kim2, Taiuk Rim2, Chang-Ki Baek2, Alon Ascoli1, Ronald Tetzlaff1,Larysa Baraban1,*, and Gianaurelio Cuniberti1

1 Technische Universität Dresden, Germany

2 Pohang University of Science and Technology, Republic of Korea

We demonstrate the biosensing of the Ebola VP40 matrix protein in liquid samples, using a memristor mode of a nanodevice. Further, we show the advantages of controlling the voltage gap via external voltage, which allows the sensing of both positive and negative charges.


1057–1068





Single ultrasmall Mn2+-doped NaNdF4 nanocrystals as multimodal nanoprobes for magnetic resonance and second near-infrared fluorescence imaging

Xin Wang1,*, Huishan Hu1,2, Hailu Zhang1, Chunyan Li1, Baoli An2, and Jianwu Dai1,*

1 Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, China

2 Shanghai University, China

Ultrasmall NaNdF4:Mn nanocrystals have been developed as multimodal nanoprobes for high-performing magnetic resonance (MR)/second near infrared (NIR-II)/computed tomography (CT) imaging, as demonstrated by in vitro, in vivo, and ex vivo experiments.


1069–1081





Mitochondria-targeting self-assembled nanoparticles derived from triphenylphosphonium-conjugated cyanostilbene enable site-specific imaging and anticancer drug delivery

Ka Young Kim1, Hanyong Jin2, Jaehyeon Park1, Sung Ho Jung1, Ji Ha Lee1, Hyesong Park1, Sung Kuk Kim1, Jeehyeon Bae2, and Jong Hwa Jung1,*

1 Gyeongsang National University, Republic of Korea

2 Chung-Ang University, Republic of Korea

Our findings indicate that applications of N1 as a mitochondrial targeting probe, drug delivery platform, and chemotherapeutic agent provide a unique strategy for potential image-guided therapy as well as site-specific delivery system to cancer cells.


1082–1098





Visible light-driven superoxide generation by conjugated polymers for organic synthesis

Feili Lai1,2, Yue Wang2, Dandan Li3, Xianshun Sun1, Juan Peng2, Xiaodong Zhang1,*, Yupeng Tian3, and Tianxi Liu2,4,*

1 University of Science and Technology of China, China

2 Fudan University, China

3 Anhui University, China

4 Donghua University, China

The conjugated polymer poly(3-hexylthiophene) was designed as a metal-free visible light-driven photocatalyst for efficient superoxide generation. For the first time, poly(3-hexylthiophene) nanofibers are reported to exhibit excellent photocatalytic ability toward organic synthesis reactions, being able to catalyze the conversion of a variety of amines into imines by self-coupling with nearly 100% conversion and selectivity under visible light irradiation.


1099–1108





Facile in situ growth of highly dispersed palladium on phosphotungstic-acid-encapsulated MIL-100(Fe) for the degradation of pharmaceuticals and personal care products under visible light

Ruowen Liang1, Renkun Huang1, ShaomingYing1, Xuxu Wang2, Guiyang Yan1,*, and Ling Wu2,*

1 Ningde Normal University, China

2 Fuzhou University, China

We explore an in situ method for preparing Pd-phosphotungstic acid-MIL-100(Fe) nanocomposites (Pd-PTA-MIL-100(Fe)). The resulting Pd-PTA-MIL-100(Fe) nanocomposites show excellent photoactivity toward the degradation of pharmaceuticals and personal care products under visible-light irradiation.


1109–1123





CVD growth of fingerprint-like patterned 3D graphene film for an ultrasensitive pressure sensor

Kailun Xia, Chunya Wang, Muqiang Jian, Qi Wang, and Yingying Zhang*

Tsinghua University, China

A bionic flexible pressure sensor is fabricated based on fingerprint-like patterned three-dimensional (3D) graphene films and hierarchical structured polydimethylsiloxane (PDMS) films molded from natural leaves. The sensor simultaneously possesses a high sensitivity (up to 110 (kPa)−1), large workable pressure range (up to 75 kPa), low detection limit (0.2 Pa), and fast response (< 30 ms), showing great potential for health monitoring and human/machine interaction.


1124–1134





Robust 3D network architectures of MnO nanoparticles bridged by ultrathin graphitic carbon for high-performance lithium-ion battery anodes

Jingchun Jia, Xiang Hu, and Zhenhai Wen*

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

A synthetic strategy for the fabrication of robust three-dimensional (3D) network architectures of MnO nanoparticles bridged by an ultrathin graphitic carbon layer is described. The composite has favorable Li-ion storage properties, a high capacity, excellent rate capability, and acceptable cycling stability.


1135–1145





Discharge voltage behavior of electric double-layer capacitors during high-g impact and their application to autonomously sensing high-g accelerometers

Keren Dai1, Xiaofeng Wang1,*, Fang Yi2, Yajiang Yin1, Cheng Jiang1, Simiao Niu3, Qingyu Li1, and Zheng You1,*

1 Tsinghua University, China

2 Peking University, China

3 Stanford University, USA

A novel integrated device that serves as a power source and as a high-g accelerometer is proposed based on a supercapacitor with broad application prospects in automobiles. The design, material preparation, fabrication, and parameter optimization are presented. A dynamic model is used to explain the micro-scale mechanism. The simulation and experimental results reveal the voltage dependency of the high-g accelerometer and demonstrate the characteristics of the device.


1146–1156





Integrative square-grid triboelectric nanogenerator as a vibrational energy harvester and impulsive force sensor

Chuan He1,2, Weijun Zhu3, Guang Qin Gu1,2,4, Tao Jiang1,2, Liang Xu1,2, Bao Dong Chen1,2, Chang Bao Han1,2, Dichen Li3, and Zhong Lin Wang1,2,5,*

1 Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, China

2 National Center for Nanoscience and Technology (NCNST), China

3 Xi’an Jiaotong University, China

4 University of Chinese Academy of Sciences, China

5 Georgia Institute of Technology, USA

Square-grid triboelectric nanogenerator that can harvest vibrational energy over a broad bandwidth and operate at different vibrational angles is capable of harvesting the vibrational energy from the impact between a ping pong ball and a racket. Moreover, through integration into a focus mitt, it can be used in various combat sports to monitor the frequency and magnitude of punches or kicks.


1157–1164



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