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《纳米研究》2018年第4期目录

Nano Research NanoResearch

Nano Research


Contents


Research Articles


Dynamics and self-assembly of bio-functionalized gold nanoparticles in solution: Reactive molecular dynamics simulations

Susanna Monti1,2,*, Giovanni Barcaro3, Luca Sementa3, Vincenzo Carravetta3, and Hans Ågren2,4

1 Institute of Chemistry of Organometallic Compounds, Italy

2 KTH Royal Institute of Technology, Sweden

3 Institute of Chemical and Physical Processes, Italy

4 Siberian Federal University, Russia

The motion and self-interaction of gold nanoparticles functionalized with a cysteine-based peptide are simulated in water solution by means of classical reactive force field approach (ReaxFF).


1757–1767





Exploration of channel width scaling and edge states in transition metal dichalcogenides

Feng Zhang1,*, Chia-Hui Lee2, Joshua A. Robinson2, and Joerg Appenzeller1

1 Purdue University, USA

2 The Pennsylvania State University, USA

This article describes a comprehensive study of various transition metal dichalcogenides (TMDs), including semimetallic Td-phase WTe2, and semiconducting 2H-phase MoTe2 and MoS2. The materials were analyzed with respect to the impact of channel width scaling on the transport and edge effects in various TMD ribbon geometries.


1768–1774





Hierarchical ferric-cobalt-nickel ternary oxide nanowire arrays supported on graphene fibers as high-performance electrodes for flexible asymmetric supercapacitors

Jingxin Zhao1,2, Chaowei Li2, Qichong Zhang2, Jun Zhang2, Xiaona Wang2, Juan Sun2, Juanjuan Wang1, Jixun Xie1, Ziyin Lin3, Zhuo Li3, Weibang Lu2, Conghua Lu1,*, and Yagang Yao2,*

1 Tianjin University, China

2 Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, China

3 Georgia Institute of Technology, USA

Assembled flexible asymmetric graphene fiber-based supercapacitor devices present excellent flexibility and high specific capacitance.


1775–1786





Application of chemical vapor-deposited monolayer ReSe2 in the electrocatalytic hydrogen evolution reaction

Shaolong Jiang1, Zhepeng Zhang1, Na Zhang1, Yahuan Huan1, Yue Gong2,3, Mengxing Sun4, Jianping Shi1, Chunyu Xie1, Pengfei Yang1, Qiyi Fang1, He Li1, Lianming Tong1, Dan Xie4, Lin Gu2,3,5, Porun Liu6, and Yanfeng Zhang1,*

1 Peking University, China

2 Institute of Physics, Chinese Academy of Sciences, China

3 University of Chinese Academy of Sciences, China

4 Tsinghua University, China

5 Collaborative Innovation Center of Quantum Matter, China

6 Griffith University, Australia

Structurally anisotropic rhenium diselenide (ReSe2) with variable domain morphologies (sunflower- or truncated-triangle-shaped) and uniform monolayer thickness was successfully synthesized on SiO2/Si substrates by ambient-pressure chemical vapor deposition. The prepared monolayer ReSe2 could be transferred onto Au foil to afford electrodes with promising electrocatalytic activity for the hydrogen evolution reaction.


1787–1797





In situ transformation of Cu2O@MnO2 to Cu@Mn(OH)2 nanosheet-on-nanowire arrays for efficient hydrogen evolution

Li Chen1,2, Xing Zhang1,3,*, Wenjie Jiang1,3, Yun Zhang1, Linbo Huang1,3, Yuyun Chen1, Yuguo Yang2, Li Li4, and Jinsong Hu1,3,*

1 Institute of Chemistry, Chinese Academy of Sciences, China

2 Beijing Jiaotong University, China

3 University of Chinese Academy of Sciences, China

4 Chongqing University, China

In situ transformation of three-dimensional Cu2O@MnO2 into Cu@Mn(OH)2 nanosheet-on-nanowire arrays significantly boosts the electrocatalytic activity for the hydrogen evolution reaction (HER), demonstrating its potential as a new HER electrocatalyst.


1798–1809





Light-powered direction-controlled micropump

Mingtong Li, Yajun Su, Hui Zhang, and Bin Dong* 

Soochow University, China

This study presents a light-driven binary micropump based on perovskite and poly[(2-methoxy-5-ethylhexyloxy)-1,4-phenylenevinylene] (MEHPPV) that exhibits controlled pumping directions. The micropump is utilized to realize heartbeat-like pumping and spatial control over colloidal transportation inside a solution.


1810–1821





Scalable synthesis of sub-100 nm hollow carbon nanospheres for energy storage applications

Hongyu Zhao1, Fan Zhang1, Shumeng Zhang1, Shengnan He1, Fei Shen1, Xiaogang Han1,*, Yadong Yin2, and Chuanbo Gao1,*

1 Xi’an Jiaotong University, China

2 University of California, Riverside, USA

Sub-100 nm hollow carbon nanospheres (as small as ~ 32.5 nm) have been synthesized in high yield by employing reverse micelles as nanoreactors, and show excellent capacity and cycling stability when used as an anode material for lithium/sodium-ion batteries.


1822–1833





Electrical contacts in monolayer blue phosphorene devices

Jingzhen Li1, Xiaotian Sun3, Chengyong Xu4, Xiuying Zhang1, Yuanyuan Pan1, Meng Ye1, Zhigang Song1, Ruge Quhe5, Yangyang Wang1,6, Han Zhang1, Ying Guo7, Jinbo Yang1,2, Feng Pan1,*, and Jing Lu1,2,*

1 Peking University, China

2 Collaborative Innovation Center of Quantum Matter, China

3 Luoyang Normal University, China

4 Nanchang Institute of Technology, China

5 Beijing University of Posts and Telecommunications, China

6 China Academy of Space Technology, China

7 Shaanxi University of Technology, China

Ab initio quantum transport simulations show that monolayer blue phosphorene forms n-type Schottky contact with Sc, Ag, and Pt electrodes with lateral electron Schottky barrier heights of 0.22, 0.22, and 0.80 eV, respectively, and it forms p-type Schottky contact with Pd and Au electrodes with lateral hole Schottky barrier heights of 0.79 and 0.61 eV, respectively.


1834–1849





Growth of ZnO self-converted 2D nanosheet zeolitic imidazolate framework membranes by an ammoniaassisted strategy

Yujia Li1, Lu Lin1,2, Min Tu3, Pei Nian1, Ashlee J. Howarth2, Omar K. Farha2,4, Jieshan Qiu1, and Xiongfu Zhang1,*

1 Dalian University of Technology, China

2 Northwestern University, USA

3 KU Leuven-University of Leuven, Belgium

4 King Abdulaziz University, Saudi Arabia

A two-dimensional (2D) nanosheet zeolitic imidazolate framework membrane is fabricated by direct growth based on the localized solvothermal self-conversion of pre-deposited ZnO on a porous Al2O3 tube and using ammonium hydroxide as a synthetic modulator. The 2D nanosheet membrane achieved here exhibits excellent molecular sieving performance with high H2 permeance and selectivity for H2/CO2 separation.


1850–1860





One-step synthesis of novel snowflake-like Si-O/Si-C nanostructures on 3D graphene/Cu foam by chemical vapor deposition

Jing Ning, Dong Wang*, Jincheng Zhang*, Xin Feng, Ruixia Zhong, Jiabo Chen, Jianguo Dong, Lixin Guo, and Yue Hao

Xidian University, China

In this work, novel snowflake-like Si-O/Si-C nanostructures with a high specific surface area were synthesized by low-pressure chemical vapor deposition (CVD). The nanostructures showed a high specific capacitance of ~ 963.2 mF/cm2 at a scan rate of 1 mV/s. Further, even after 20,000 sequential cycles, the electrode retained 94.4% of its capacitance.


1861–1872





Triboelectrification based on double-layered polyaniline nanofibers for self-powered cathodic protection driven by wind

Siwen Cui1,2, Youbin Zheng1, Jun Liang1, and Daoai Wang1,*

1 Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, China

2 University of Chinese Academy of Sciences, China

A wind-driven polyaniline nanofibers-based triboelectric nanogenerator (TENG) with a high output performance was used as a novel power source for a self-powered cathodic protection system.


1873–1882





Fast formation of single-unit-cell-thick and defect-rich layered double hydroxide nanosheets with highly enhanced oxygen evolution reaction for water splitting

Rui Gao1 and Dongpeng Yan1,2,*

1 Beijing University of Chemical Technology, China

2 Beijing Normal University, China

This work presents a combined experimental and theoretical study on two-dimensional (2D) single-unit-cell-thick layered double hydroxide (LDH) nanosheets (NSs) with high oxygen evolution reaction (OER) activities, which have potential applications in water splitting for renewable energy.


1883–1894





Copper nanowire-TiO2-polyacrylate composite electrodes with high conductivity and smoothness for flexible polymer solar cells

Haitao Zhai1,2, Yang Li3, Liwei Chen3, Xiao Wang1,2, Liangjing Shi1, Ranran Wang1,*, and Jing Sun1,*

1 Shanghai Institute of Ceramics, Chinese Academy of Sciences,China

2 University of Chinese Academy of Sciences, China

3 Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, China

Polymer solar cells with excellent flexibility were fabricated on a copper nanowire-TiO2-polyacrylate composite electrode. The power conversion efficiency of the cells based on the composite electrode reached 3.11% under a simulated AM1.5G illumination and maintained 90% of their original efficiency after 500 cycles of bending.


1895–1904





N-doped carbon nanocages: Bifunctional electrocatalysts for the oxygen reduction and evolution reactions

Nan Jia, Qiang Weng, Yaru Shi, Xinyan Shi, Xinbing Chen, Pei Chen*, Zhongwei An, and Yu Chen

Shaanxi Normal University, China

N-doped carbon nanocages (N-CCs) with a porous self-supported architecture and high specific surface area were synthesized by a simple interfacial assembly method. They exhibited long-term operational durability and excellent methanol tolerance during the oxygen reduction reaction.


1905–1916





Fullerene/cobalt porphyrin charge-transfer cocrystals: Excellent thermal stability and high mobility

Shushu Zheng1,3, Junwen Zhong1, Wakana Matsuda2, Peng Jin4, Muqing Chen1, Takeshi Akasaka1, Kazuhito Tsukagoshi3,*, Shu Seki2,*, Jun Zhou3, and Xing Lu1,*

1 Huazhong University of Science and Technology (HUST), China

2 Kyoto University, Japan

3 National Institute for Materials Science (NIMS), Japan

4 Hebei University of Technology, China

Needle-like fullerene (C70)/cobalt porphyrin supramolecular architectures were readily prepared by using a liquid?liquid interfacial precipitation method. These architectures showed excellent electrical conductivity of 1.08 × 103 Ω-1·m-1, high mobility of 4.21 cm2·V-1·s-1, and good charge transfer properties even after thermal treatment at 1,000 °C, which are highly promising attributes for the development of future multifunctional electronics.


1917–1927





Graphene oxide as a water transporter promoting germination of plants in soil

Yijia He, Ruirui Hu, Yujia Zhong, Xuanliang Zhao, Qiao Chen, and Hongwei Zhu*

Tsinghua University, China

Graphene oxide (GO) was tested as a moisture retention additive in soil. The hydrophilic nature and water-transporting properties of GO helped to expedite germination and growth of plants.


1928–1937





A low-cost, printable, and stretchable strain sensor based on highly conductive elastic composites with tunable sensitivity for human motion monitoring

Yougen Hu1, Tao Zhao1, Pengli Zhu1,*, Yuan Zhang1,2, Xianwen Liang1, Rong Sun1,*, and Ching-Ping Wong3,4

1 Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, China

2 University of Science and Technology of China, China

3 Georgia Institute of Technology, USA

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

Low-cost silver-coated polystyrene spheres PS@Ag)/polydimethylsiloxane (PDMS) elastic conductive composites fabricated by robust screen printing technology show excellent flexibility and printing adaptability, and exhibit high electrical conductivity, low percolation threshold, and good electrical stability under vigorous mechanical deformation. They also demonstrate excellent strain-sensing performance in monitoring various human motions with high sensitivity and excellent stability.


1938–1955





Semi-transparent polymer solar cells with all-copper nanowire electrodes

Haitao Zhai1,2, Yang Li3, Liwei Chen3, Xiao Wang1,2, Liangjing Shi1, Ranran Wang1,*, and Jing Sun1,*

1 Shanghai Institute of Ceramics, Chinese Academy of Sciences, China

2 University of Chinese Academy of Sciences, China

3 Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, China

Semi-transparent polymer solar cells (PSCs) with all-Cu nanowire (NW) electrodes were fabricated with the structure of polyacrylate (PA)/Cu NWs/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) (PH1000)/Y-TiO2/poly(3-hexylthiophene):[6,6]- phenyl-C61-butyric acid 3,4,5-tris(octyloxy) benzyl (P3HT:PC61BM)/ PEDOT:PSS (4083)/Cu NWs/polyimide (PI)/polydimethylsiloxane (PDMS). The semi-transparent PSCs showed power conversion efficiencies up to 1.97% and 1.85% from each side with an average transmittance of ~ 42% in the visible region.


1956–1966





Oxygen-assisted preparation of mechanoluminescent ZnS:Mn for dynamic pressure mapping

Xiandi Wang1,2, Rui Ling1,3, Yufei Zhang1,4, Miaoling Que1,2, Yiyao Peng1,2, and Caofeng Pan1,2,*

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

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

3 University of Science and Technology Beijing, China

4 Beihang University, China

Two-dimensional pressure distribution can be observed using mechanoluminescent ZnS:Mn particles synthesized by solid-state reaction at atmospheric pressure with the assistance of oxygen.


1967–1976





Piezotronic effect on the luminescence of quantum dots for micro/nano-newton force measurement

Yan Zhang1,2, Jiaheng Nie1, and Lijie Li3,*

1 University of Electronic Science and Technology of China, China

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

3 Swansea University, UK

Analysis of semiconductor quantum dots applied as nano-newton force sensors based on the control of the luminescence spectrum using the piezotronics effect has been reported.


1977–1986





Rational design of a “sense and treat ” system to target amyloid aggregates related to Alzheimer’s disease

Zhi Du, Nan Gao*, Yijia Guan, Chao Ding, Yuhuan Sun, Jinsong Ren, and Xiaogang Qu*

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

This hybrid system can specifically detect Aβ oligomers, and achieve the wireless deep magnetothermally mediated disassembly of Aβ aggregates with a biologically adaptable alternating magnetic field.


1987–1997





Long-term stable silver nanowire transparent composite as bottom electrode for perovskite solar cells

Yunxia Jin, Yong Sun, Kaiqing Wang, Yani Chen, Ziqi Liang, Yuxi Xu*, and Fei Xiao*

Fudan University, China

A long-term stable, smooth silver nanowire (AgNW) composite with ascorbic-acid-modified chitosan was fabricated via a lowtemperature solution process and was successfully employed in perovskite solar cells as the bottom electrode.


1998–2011





Novel dual fluorescence temperature-sensitive chameleon DNA-templated silver nanocluster pair for intracellular thermometry

Weijun Zhou1,2, Jinbo Zhu1, Ye Teng1, Baoji Du1,2, Xu Han1, and Shaojun Dong1,2,*

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

2 University of Chinese Academy of Sciences, China

A series of dual fluorescence temperature-sensitive silver nanocluster (AgNC) pairs were reported. The AgNC pairs achieved sensitive fluorescence variations responding to temperature change from 15 to 45 °C and succeed in indicating temperature in living cells.


2012–2023





Self-supported CoMoS4 nanosheet array as an efficient catalyst for hydrogen evolution reaction at neutral pH

Xiang Ren1, Dan Wu1, Ruixiang Ge2, Xu Sun1, Hongmin Ma1, Tao Yan1, Yong Zhang1, Bin Du1, Qin Wei1,*, and Liang Chen2,*

1 University of Jinan, China

2 Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, China

As a durable catalyst, the CoMoS4 nanosheet array on carbon cloth shows high activity for hydrogen evolution reaction in neutral media, achieving a geometrical catalytic current density of 10 mA·cm–2 at an overpotential of 183 mV.


2024–2033





Dual-mode emission of single-layered graphene quantum dots in confined nanospace: Anti-counterfeiting and sensor applications

Liqian Bai1, Ning Xue1, Yufei Zhao2, Xinrui Wang3, Chao Lu1, and Wenying Shi1,*

1 Beijing University of Chemical Technology, China

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

3 Beijing Technology and Business University, China

Graphene quantum dots-layered double hydroxide (GQDs-LDH) composites show dual-emission property. This originates from synergistic effects of confinement and rich O-containing functional groups owing to the nanospace confinement and catalysis property of LDHs. GQDs-LDHs can potentially be used as a green anticounterfeiting material.


2034–2045





Ultrathin nanoporous metal–semiconductor heterojunction photoanodes for visible light hydrogen evolution

Weiqing Zhang1, Yunfeng Zhao1, Kai He1, Jun Luo1, Guoliang Li1, Ruirui Liu1, Siyu Liu1, Zhen Cao1, Pengtao Jing2, and Yi Ding1,*

1 Tianjin University of Technology, China

2 Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, China

A plasmonic porous metal–semiconductor nano-heterojunction photoelectrode with just ~ 100 nm overall thickness exhibits impressive hydrogen evolution rate and photostability.


2046–2057





Promoting the methanol oxidation catalytic activity by introducing surface nickel on platinum nanoparticles

Siqi Lu, Huiming Li, Jingyao Sun, and Zhongbin Zhuang* 

Beijing University of Chemical Technology, China

Using surface controlled PtNi alloy nanoparticles as model catalysts, we propose that the methanol oxidation reaction (MOR) undergoes a Langmuir–Hinshelwood mechanism. Bifunctional catalysts with both CO and OH adsorption sites are beneficial for promoting the MOR in an alkaline electrolyte.


2058–2068





Real-time decay of fluorinated fullerene molecules on Cu(001) surface controlled by initial coverage

Andrey I. Oreshkin1,*, Dmitry A. Muzychenko1,*, Sergey I. Oreshkin1, Vladimir A. Yakovlev2, Palanichamy Murugan3, S. Selva Chandrasekaran3, Vijay Kumar4,5, and Rauf Z. Bakhtizin6

1 Lomonosov Moscow State University, Russia

2 Institute of Petrochemical Synthesis, Russian Academy of Sciences, Russia

3 CSIR Central Electrochemical Research Institute, India

4 Dr. Vijay Kumar Foundation, India

5 Shiv Nadar University, India

6 Bashkir State University, Russia

The real-time evolution of C60F18 molecules on a Cu(001) surface was studied by means of scanning tunneling microscopy and ab initio calculations. The results showed that the life-time of fluorinated fullerenes is determined by the density of the two-dimensional (2D) gas phase formed by their decay on a Cu(001) surface occurring as a result of a step-by-step detachment of F atoms from the C60 cage.


2069–2082





MoS2/MnO2 heterostructured nanodevices for electrochemical energy storage

Xiaobin Liao1, Yunlong Zhao1,2, Junhui Wang1, Wei Yang1, Lin Xu1, Xiaocong Tian1, Yi Shuang1, Kwadwo Asare Owusu1, Mengyu Yan1,*, and Liqiang Mai1,3,*

1 Wuhan University of Technology, China

2 Harvard University, USA

3 University of California, Berkeley, USA


In this work, an electrochemical energy storage device based on a MoS2 nanosheet/MnO2 nanowire heterostructure was fabricated to study the effect of the heterogeneous interface on the energy storage performances.


2083–2092





Pd/Ag nanosheet as a plasmonic sensing platform for sensitive assessment of hydrogen evolution reaction in colloid solutions

Minmin Wang1,2, Ping Wang1, Jie Zhang1, Hui Hou1,2, Chuanping Li1,2, and Yongdong Jin1,*

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

2 University of Chinese Academy of Sciences, China

The photocatalytically generated H2 from a quantum dot (QD) nanosystem will adsorb and react with palladium/silver nanosheets (Pd/Ag NSs), resulting in a gradual red-shift of localized surface plasmon resonance (LSPR), which in turn can be used to assess the hydrogen evolution reaction (HER) efficiency of an H2-generating QD system in colloid solutions.


2093–2103





Temperature modulation of concentration quenching in lanthanide-doped nanoparticles for enhanced upconversion luminescence

Luoyuan Li1, Ningjiu Zhao1,2, Limin Fu1,*, Jing Zhou3, Xicheng Ai1, and Jianping Zhang1

1 Renmin University of China, China

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

3 Capital Normal University, China

The temperature-switchable concentration quenching mechanism may shed light on improving the upconversion luminescence properties and their practical applications.


2104–2115





Ultrathin nanobelts-assembled Chinese knot-like 3D TiO2 for fast and stable lithium storage

Qili Wu1, Shiman He1, Xianfeng Yang2, Jingling Yang1, Gaoren Li1, Yuying Meng1, Shengfu Tong1,*, Liqiang Mai3,*, and Mingmei Wu1,*

1 Sun Yat-Sen University, China

2 South China University of Technology, China

3 Wuhan University of Technology, China

Chinese knot-like three-dimensional (3D) TiO2 nanoarchitectures assembled with well-oriented ultrathin nanobelts are rationally synthesized based on epitaxial growth-combined topotactic conversion. The as-prepared 3D TiO2 can be utilized as an anode material for long lifespan and fast-charge lithium ion batteries.


2116–2128





Building 2D quasicrystals from 5-fold symmetric corannulene molecules

Nataliya Kalashnyk1, Julian Ledieu1, émilie Gaudry1, Can Cui2, An-Pang Tsai3, and Vincent Fournée1,*

1 Université de Lorraine, France

2 Zhejiang Sci-Tech University, China

3 Tohoku University, Japan

A two-dimensional quasicrystal has been grown from 5-fold symmetric corannulene molecules, via a method that uses the templating effect of the icosahedral Ag-In-Yb substrate through a rational selection of molecular moiety leading to the preferential adsorption of C20H10 molecules with their convex sides down at 5-fold symmetric sites, and hence enforcing long-range quasiperiodic order in the film.


2129–2138





Transition metal-mediated catalytic properties of gold nanoclusters in aerobic alcohol oxidation

Chaolei Zhang1,2, Yongdong Chen1,*, Hong Wang1, Zhimin Li2, Kai Zheng2, Shujun Li1, and Gao Li2,*

1 Southwest Petroleum University, China

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

In this study, we found that the catalytic performance of gold nanoclusters is greatly tuned by heteroatom dopants in aerobic alcohol oxidation.


2139–2148





3D mesoporous rose-like nickel-iron selenide microspheres as advanced electrocatalysts for the oxygen evolution reaction

Jiahao Yu1, Gongzhen Cheng1, and Wei Luo1,2,*

1 Wuhan University, China

2 Nankai University, China

3D mesoporous nickel iron selenide with rose-like microsphere architecture was directly synthesized on Ni foam via a successive two-step hydrothermal method. This system exhibits superior oxygen evolution reaction (OER) electrocatalytic activity, with an ultralow overpotential of 197 mV required to produce a current density of 10 mA·cm-2 in 1 M KOH.


2149–2158





Chemokine-mimetic plerixafor derivative for tumor-specific delivery of nanomaterials 

Seungbeom Ko, Gayong Shim, Jinyoung Kim, and Yu-Kyoung Oh

Seoul National University, Republic of Korea

Chemokine-mimetic plerixafor derivatives were designed for tumorspecific delivery and functional effects of nanomaterials.


2159–2172





Enhanced thermal transport across monolayer MoS2

Miguel Goni, Jia Yang, and Aaron J. Schmidt*

Boston University, USA

This work describes measurements of thermal transport across single- and few-layer exfoliated MoS2 on SiO2 and muscovite mica substrates. On the SiO2 substrate a significant improvement in heat transport was observed for monolayer MoS2 compared to few layer MoS2, while on the mica substrate the MoS2 had a minimal impact on heat transport.


2173–2180





Ag nanowire/nanoparticle-decorated MoS2 monolayers for surface-enhanced Raman scattering applications

Juan Li1,2, Weina Zhang1,2, Hongxiang Lei1,*, and Baojun Li2,*

1 Sun Yat-Sen University, China

2 Jinan University, China

A surface-enhanced Raman scattering (SERS)-active substrate is fabricated by decorating a MoS2 monolayer with Ag nanowire and nanoparticle structures using a spin-coating method. The fabricated SERS substrate exhibits ultrasensitive detection capabilities, reliable reproducibility, and good stability.


2181–2189





UV-assisted flash light welding process to fabricate silver nanowire/graphene on a PET substrate for transparent electrodes

Wan-Ho Chung, Sung-Hyeon Park, Sung-Jun Joo, and Hak-Sung Kim*

Hanyang University, Republic of Korea

The flexible transparent electrode films with silver nanowire and mixed graphene (SMG) coated on polyethylene terephthalate (PET) substrate can be fabricated via ultraviolet (UV)-assisted flash light welding process.


2190–2203





Selective toxicity of hydroxyl-rich carbon nanodots for cancer research

Tak H. Kim, Joseph P. Sirdaarta, Qian Zhang, Ehsan Eftekhari, James St. John, Derek Kennedy, Ian E. Cock, and Qin Li*

Griffith University, Australia

Highly biocompatible, yellow-emitting carbon nanodots, which are abundant in hydroxyl functional groups, were synthesized. Interestingly, the nanoparticles display divergent antiproliferative activities against two ovarian choriocarcinoma cell lines, which may be further explored for cancer drug discovery.


2204–2216





In situ trapped high-density single metal atoms within graphene: Iron-containing hybrids as representatives for efficient oxygen reduction

Daobin Liu1, Chuanqiang Wu1, Shuangming Chen1, Shiqing Ding1, Yaofeng Xie1, Changda Wang1, Tao Wang1, Yasir A. Haleem1, Zia ur Rehman1, Yuan Sang1, Qin Liu1, Xusheng Zheng1, Yu Wang2, Binghui Ge3, Hangxun Xu1, and Li Song1,*

1 University of Science and Technology of China, China

2 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, China

3 Institute of Physics, Chinese Academy of Sciences, China

Highly doped single atom catalyst was prepared via a single-step pyrolysis of glucose, dicyandiamide, and inorganic metal salts (Fe, Co, Ni, Cu, and Pt). High-angle annular dark field-scanning transmission electron microscopy (HAADF-STEM) and X-ray absorption fine structure spectroscopy (XAFS) techniques revealed that nitrogen atoms doped into the graphene matrix were pivotal to the stabilization of metal atoms by generating a metal-Nx coordination structure. Single iron-doped hybrid (Fe@N-doped graphene), as a representative, showed an excellent electrocatalytic performance for oxygen reduction reaction. This work provided a feasible approach for the design and fabrication of highly doped isolated metal catalysts with practical applications.


2217–2228





Ion separation and water purification by applying external electric field on porous graphene membrane

Amir Lohrasebi1,2,* and Samaneh Rikhtehgaran3

1 University of Isfahan, Iran

2 Institute for Research in Fundamental Sciences (IPM), Iran

3 Florida Atlantic University, USA

A system including two bilayer graphene membranes, which are exposed to two opposite directions external electric fields, was designed to produce fresh water. It is found that when the system is exposed to the electric field of 10 mV/Å and higher, the ion rejection is more than 93%.


2229–2236





How G-quadruplex topology and loop sequences affect optical properties of DNA-templated silver nanoclusters

Guangyu Tao, Yang Chen, Ruoyun Lin, Jiang Zhou, Xiaojing Pei, Feng Liu, and Na Li*

Peking University, China

The optical properties of G-quadruplex-templated silver nanoclusters are affected by G-quadruplex topology and loop sequences. An anti-parallel topology is beneficial to stronger fluorescence, while thymines adjacent to the G-tetrad are detrimental.


2237–2247





Nontoxic engineered virus nanofibers as an efficient agent for the prevention and detection of fungal infection

Yicun Wang2, Hongxi Shi1, Shuai Dong1, Yan Li1, Meng Wang3, Yanyan Huai1, Xintong Zhang1, Xi Chen1, Chuanbin Mao4,5, Xiang Gao1,*, and Li Wang1,*

1 Northeast Normal University, China

2 The Second Hospital of Jilin University, China

3 Harbin Medical University Cancer Hospital, China

4 Zhejiang University, China

5 University of Oklahoma, USA

The dual-displayed viral nanofibers could be used as a diagnosis agent for candidemia patients with higher sensitivity, and it could also be served as an excellent vaccine candidate for the prevention of fungal infection. (a) Displayed peptides on the phage, pVIII and pIII, which could recognize fungal antibodies; (b) host immune response to hybrid phage nanofibers.


2248–2255





Enhanced sodium storage performance in flexible freestanding multichannel carbon nanofibers with enlarged interlayer spacing

Beibei Yuan, Linchao Zeng, Xizhen Sun, Yan Yu*, and Qingsong Wang*

University of Science and Technology of China, China

A flexible and free-standing multichannel carbon nanofibers film electrode with enlarged interlayer spacing was fabricated through a facile high-temperature vacuum process and exhibited superior sodium storage performance.


2256–2264





Flow behavior of liquid metal in the connected fascial space: Intervaginal space injection in the rat wrist and mice with tumor

Nan Hu1,2,3, Yupeng Cao1,2, Zhuo Ao1, Xinxiao Han1,2, Qiang Zhang1,2, Wentao Liu1, Sidi Liu1, Fulong Liao1,4, and Dong Han1,2,* 

1 National Center for Nanoscience and Technology, China

2 University of Chinese Academy of Sciences, China

3 Chengde Medical University, China

4 China Academy of Chinese Medical Sciences, China

After the injection of liquid metal into the wrist intervaginal space comprising tendons, vessels, and nerves, the liquid metal wrapped around the fascial space and finally reached the fingertip downstream and armpit upstream in addition to the neurovascular bundle without vessels or lymph nodes. During the invasion of the tumor along the route, the integrity of the fascia is destroyed. The liquid metal may enter the tumor through the damaged spot, finally reach the inside of the tumor through the fascia fiber network, and wrap the tumor cells. As a result, tumor growth is obstructed and the tumor experiences partial necrosis and becomes hollow inside.


2265–2276





Highly delocalized endohedral metal in Gd@C2v (9)-C82 metallofullerenes co-crystallized with α-S8

Cheng Li1,2, Xuejiao J. Gao4, Huanli Yao1,2, Huan Huang1,2, Rongli Cui1,2, Xihong Guo1,2, Lele Zhang1, Bing Liu1,2, Binggang Xu1, Weiqun Shi1,2, Jinquan Dong1, Lai Feng3,*, Xingfa Gao4,*, and Baoyun Sun1,2,*

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

2 University of Chinese Academy of Sciences, China

3 Soochow University, China

4 Jiangxi Normal University, China

A new Gd@C2v(9)-C82 metallofullerene co-crystallized with α-S8 was prepared and characterized by single-crystal X-ray diffraction (XRD), and a highly delocalized endohedral Gd atom was identified in the co-crystal for the first time. Density functional theory (DFT) calculations were employed to inspect and rationalize the unique endohedral metal distribution in this system.


2277–2284





Doxorubicin-loaded silicon nanoparticles impregnated into red blood cells featuring bright fluorescence, strong photostability, and lengthened blood residency

Airui Jiang, Bin Song, Xiaoyuan Ji, Fei Peng, Houyu Wang, Yuanyuan Su, and Yao He*

Soochow University, China

We herein present doxorubicin-loaded fluorescent silicon nanoparticles impregnated into red blood cells, which simultaneously exhibit bright fluorescence, robust photostability, and significantly lengthened blood residency.


2285–2294





Sodium-doped carbon nitride nanotubes for efficient visible light-driven hydrogen production

Longshuai Zhang1,3, Ning Ding1,3, Muneaki Hashimoto2, Koudai Iwasaki2, Noriyasu Chikamori2, Kazuya Nakata2, Yuzhuan Xu1,3, Jiangjian Shi1,3, Huijue Wu1,3, Yanhong Luo1,3, Dongmei Li1,3,*, Akira Fujishima2,*, and Qingbo Meng1,3,*

1 Institute of Physics, Chinese Academy of Sciences, China

2 Tokyo University of Science, Japan

3 University of Chinese Academy of Sciences, China

Sodium-doped carbon nitride nanotubes (Nax-CNNTs) for photocatalytic water splitting have been prepared via a green and simple two-step method involving hydrothermal and thermopolymerization processes. The synergistic effect of the porous tubular structure and the Na+ doping enhances the hydrogen evolution rate under visible light (λ > 420 nm) irradiation.


2295–2309





Plasmon resonant amplification of a hot electron-driven photodiode

Lang Shen1, Nirakar Poudel1, George N. Gibson2,3, Bingya Hou1, Jihan Chen1, Haotian Shi1, Ernest Guignon3, William D. Page3, Arturo Pilar3, and Stephen B. Cronin1,*

1 University of Southern California, USA

2 University of Connecticut, USA

3 Ciencia Inc., USA

Plasmon-enhanced photocurrent is realized in a plasmon resonant grating structure with a pitch of 500 nm. An amplification factor of  4.6× is obtained under resonant conditions.


2310–2314


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