《纳米研究》2018年1期目录
Nano Research
Contents
Review Articles
Engineering carbon quantum dots for photomediated theranostics
Mahbub Hassan, Vincent G. Gomes*, Alireza Dehghani,and Sara M. Ardekani
The University of Sydney, Australia
This article provides a comprehensive review of the engineering of carbon quantum dots for nanobiophotonic applications. It encompasses fundamental aspects to photomediated bioapplications of carbon quantum dots, with discussions on their prospects.
1–41
Recent advances in gas-involved in situ studies via transmission electron microscopy
Ying Jiang1,2, Zhengfei Zhang1, Wentao Yuan1, Xun Zhang1,Yong Wang1,*, and Ze Zhang1,*
1 Zhejiang University, China
2 Shanghai University, China
The recent progress in research on gas–solid interactions via controlled-atmosphere transmission electron microscopy is reviewed.
42–67
Research Articles
Extraction, detection, and profiling of serum biomarkers using designed Fe3O4@SiO2@HA core–shell particles
Chandrababu Rejeeth1, Xuechao Pang1, Ru Zhang1, Wei Xu1, Xuming Sun1, Bin Liu1, Jiatao Lou1, Jingjing Wan2, Hongchen Gu1, Wei Yan1,*, and Kun Qian1,*
1 Shanghai Jiao Tong University, China
2 Shanghai University, China
We constructed hyaluronic acid (HA) based functional materials and device through layer–by–layer assembling. Further in combination with mass spectrometry and electrochemistry methods, we achieved efficient extraction, detection, and profiling of serum biomarkers via ligand–protein interactions.
68–79
Highly ordered macroporous–mesoporous Ce0.4Zr0.6O2 as dual-functional material in a polysulfide polymer
Zhenxing Li1,*, Jianzheng Zhang2,*, Mingming Li1, Xiaofei Xing1, and Qiuyu Zhang2
1 China University of Petroleum (Beijing), China
2 Northwestern Polytechnical University, China
A highly hierarchically ordered microporous–mesoporous Ce0.4Zr0.6O2 solid solution with crystalline framework walls was directly and simply prepared using polystyrene (PS) microspheres and a block copolymer as dual templates. The PS microspheres and block copolymer were assembled into colloidal crystals and mesoscopic rod-like micelles to form macroporous and mesoporous templates, respectively, by a one-step process. The microporous–mesoporous Ce0.4Zr0.6O2 material significantly improved the ultraviolet resistance and mechanical performance of a polysulfide polymer.
80–88
Low-cost disordered carbons for Li/S batteries: A highperformance carbon with dual porosity derived from cherry pits
Celia Hernández-Rentero1, Rafael Córdoba1, Noelia Moreno1, Alvaro Caballero1, Julian Morales1,*, Mara Olivares-Marín2, and Vicente Gómez-Serrano2
1 Universidad de Córdoba, Spain
2 Universidad de Extremadura, Spain
A hierarchical porous carbon (HPC) was synthesized from cherry pits using phosphoric acid as activating agent. HPC/S composite exhibits excellent performance as electrodes for Li/S batteries at both low and high rates. This outstanding property was observed without a preliminary thermal treatment of the composite and in the absence of doping elements such as N and/or S in the carbon.
89–100
Triboelectric nanogenerators with gold-thin-film-coated conductive textile as floating electrode for scavenging wind energy
Bhaskar Dudem, Dong Hyun Kim, and Jae Su Yu*
Kyung Hee University, Republic of Korea
A triboelectric nanogenerator (TENG) with a simple fabrication process, low cost, and light weight was developed using a highly conductive and flexible Au-coated conductive textile to scavenge wind energy. The proposed wind-based TENG (W-TENG) was also tested in the outdoor environment, confirming that it can work efficiently in an actual windy situation to convert wind energy into electricity.
101–113
Bioluminescent nanopaper for rapid screening of toxic substances
Jie Liu1,2, Eden Morales-Narváez1, Jahir Orozco1, Teresa Vicent3, Guohua Zhong2,*, and Arben Merkoçi1,4,*
1 Campus UAB, Spain
2 South China Agricultural University, China
3 Universitat Autònoma de Barcelona, Spain
4 ICREA, Spain
A composite based on bacterial nanocellulose and the luminescent bacterium Aliivibrio fischeri is reported. Nanocellulose operates as both a culture scaffold and an optically transparent biosensing substrate, with the bioluminescent organism operating as a bioindicator. This nanobiocomposite is utilized as a simple-to-fabricate and user-friendly device for toxicity detection via determination of bioluminescent inhibition caused by exposure to various contaminants.
114–125
Strongly coupled Ag/TiO2 heterojunctions for effective and stable photothermal catalytic reduction of 4-nitrophenol
Ying Gu1, Yanqing Jiao2, Xiaoguang Zhou1,*, Aiping Wu2, Bater Buhe2, and Honggang Fu2,*
1 Northeast Forestry University, China
2 Heilongjiang University, China
An easy and salable method was developed for the construction of strongly coupled Ag/TiO2 heterojunctions for the effective and stable catalytic conversion of 4-nitrophenol (4-NP) into 4-aminophenol (4-AP) in the presence of NaBH4. The conversion of 4-NP into 4-AP was significantly enhanced under light irradiation. This is ascribed to the localized surface plasmon resonance effect of Ag, which generated hot e− and h+ particles under light irradiation and local heating around the particles via their absorption of the light.
126–141
Hybridized electronic states between CdSe nanoparticles and conjugated organic ligands: A theoretical and ultrafast photo-excited carrier dynamics study
Tersilla Virgili1,*, Arrigo Calzolari2, Inma Suárez López1, Alice Ruini2,3, Alessandra Catellani2, Barbara Vercelli4, and Francesco Tassone5,*
1 IFN-CNR, Italy
2 Istituto Nanoscienze CNR-NANO-S3, Italy
3 Università di Modena e Reggio Emilia, Italy
4 ICMATE-CNR SS di Milano, Italy
5 Istituto Italiano di Tecnologia, Italy
Theoretical model of hybridized states between nanoparticles (NPs) and organic ligands confirm the experimental pump-and-probe observation and explain the large observed photocurrents.
142–150
Simultaneous red–green–blue electroluminescent enhancement directed by surface plasmonic “far-field” of facile gold nanospheres
Xiaoyan Wu1,3, Yiqi Zhuang1, Zhongtao Feng1, Xuehong Zhou1, Yuzhao Yang2, Linlin Liu1,*, Zengqi Xie1, Xudong Chen2, and Yuguang Ma1,*
1 South China University of Technology, China
2 Sun Yat-sen University, China
3 China Academy of Engineering Physics, China
Simultaneous red–green–blue electroluminescence enhancement by the “far-field” effect of facile synthesized gold nanospheres in white polymer light-emitting diodes was realized in this work. Yield enhancement is achieved in more than 95% devices with the best enhancing ratio of 60%.
151–162
Metal-organic framework-derived, Zn-doped porous carbon polyhedra with enhanced activity as bifunctional catalysts for rechargeable zinc-air batteries
Xuan Wu, Ge Meng, Wenxian Liu, Tian Li, Qiu Yang, Xiaoming Sun, and Junfeng Liu*
Beijing University of Chemical Technology, China
Porous carbon polyhedra (ZnCoNC) were fabricated using Zn-doped, Co-based metal-organic frameworks as precursors. Doping with Zn species reduces the Co nanoparticle size and increases the nitrogen content of the products, endowing the as-prepared ZnCoNC with enhanced oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) electrocatalytic activity in alkaline media, thus making them promising cathode materials for zinc-air batteries.
163–173
Graphene quantum dots derived from hollow carbon nano-onions
Chenguang Zhang1,3, Jiajun Li2, Xianshun Zeng1, Zhihao Yuan1,3,*, and Naiqin Zhao2,*
1 Tianjin University of Technology, China
2 Tianjin University, China
3 Tianjin Key Lab for Photoelectric Materials & Devices, China
Hollow carbon nano-onions (CNOs) are preferred precursors for the synthesis of graphene quantum dots (GQDs) with a uniform size distribution, whereas metal encapsulation in the CNO structure is disadvantageous for the same. Furthermore, acid oxidation of hollow CNOs can result in GQDs with a yellow-green hybrid luminescence and long excitation wavelength (λex)-ranged λex-independent photoluminescent (PL) behavior, in which the λex upper limit is 480 nm. This enables sensing and cell imaging under visible light excitation with no need for UV excitation.
174–184
Highly π-extended copolymer as additive-free holetransport material for perovskite solar cells
Jie Liu1,2, Qianqing Ge1,2, Weifeng Zhang1,2, Jingyuan Ma1,2, Jie Ding1,2, Gui Yu1,2,*, and Jinsong Hu1,2,*
1 Institute of Chemistry, Chinese Academy of Sciences, China
2 University of Chinese Academy of Sciences, China
A polythiophene-based copolymer (PDVT-10) with a hole mobility up to 8.2 cm2·V−1·s−1 and a highest occupied molecular orbital level of −5.28 eV is used as a hole-transport layer for perovskite solar cells for the first time. The new additive-free hole-transport material exhibits better photovoltaic performance than poly(triarylamine)-based devices and can function as an encapsulation layer for NH3CH3PbI3 to maintain long-term stability.
185–194
Layered double hydroxide monolayers for controlled loading and targeted delivery of anticancer drugs
Xuan Mei, Simin Xu, Tongyang Hu, Liuqi Peng, Rui Gao, Ruizheng Liang*, Min Wei*, David G. Evans, and Xue Duan
Beijing University of Chemical Technology, China
Monolayered double hydroxide (MLDH) nanosheets with a high specific surface area are prepared and serve as a drug carrier for the chemotherapeutic agent doxorubicin with an extremely large loading capacity and controllable release.
195–205
Energy-driven surface evolution in beta-MnO2 structures
Wentao Yao1, Yifei Yuan2,3, Hasti Asayesh-Ardakani1, Zhennan Huang3, Fei Long1, Craig R. riedrich1, Khalil Amine2, Jun Lu2,*, and Reza Shahbazian-Yassar1,3,*
1 Michigan Technological University, USA
2 Argonne National Laboratory, USA
3 The University of Illinois at Chicago, USA
The energy-controlled lateral surface evolution in β-MnO2 nanowires and microrods followed the elimination of {100} facets and the increased occupancy of {110} facets.
206–215
Facile growth of homogeneous Ni(OH)2 coating on carbon nanosheets for high-performance asymmetric supercapacitor applications
Mingjiang Xie1, Zhicheng Xu1, Shuyi Duan1, Zhengfang Tian1,2, Yu Zhang1, Kun Xiang1, Ming Lin3, Xuefeng Guo1,2,*, and Weiping Ding1,*
1 Nanjing University, China
2 Huanggang Normal University, China
3 Institute of Materials Research and Engineering (IMRE), Singapore
A homogeneous Ni(OH)2 coating was grown on carbon nanosheets by a facile ion-exchange reaction, via the in situ transformation of MgO/C to Ni(OH)2/C. The obtained Ni(OH)2/C composite exhibits superior performances as an asymmetric supercapacitor, with a large capacity (198 F/g), high energy density (56.7 Wh/kg at 4.0 kW/kg), and excellent cycling stability, with 93% capacity retention after 10,000 cycles.
216–224
Strain-induced band gap engineering in layered TiS3
Robert Biele1,*, Eduardo Flores2, Jose Ramón Ares2, Carlos Sanchez2,3, Isabel J. Ferrer2,3, Gabino Rubio-Bollinger2,3, Andres Castellanos-Gomez4,*, and Roberto D’Agosta1,5,*
1 Universidad del País Vasco, Spain
2 Universidad Autónoma de Madrid, Spain
3 Instituto de Ciencia de Materiales “Nicolás Cabrera”, Spain
4 Instituto de Ciencia de los Materiales de Madrid (ICMMCSIC), Spain
5 IKERBASQUE, Basque Foundation for Science, Spain
The band gap of titanium trisulfide is extremely sensitive to the application of uniaxial strain, especially in the facile transport direction. Moreover, for large enough strain (but still within the elastic limit) the nature of the band gap changes from direct to indirect, with strong implications for the potential application of these materials in optical devices.
225–232
Three-dimensional spongy nanographene-functionalized silicon anodes for lithium ion batteries with superior cycling stability
Chunfei Zhang, Tong-Hyun Kang, and Jong-Sung Yu*
DGIST, Republic of Korea
An innovative three-dimensional sponge-like nanographene (SG) shell is designed and applied on a silicon substrate, resulting in a Si@SG hybrid with unique properties, suitable to overcome the main issues affecting the application of silicon in lithium ion batteries. Electrodes based on the novel Si@SG hybrids achieve excellent electrochemical performance in terms of long-term cycling stability and rate performance at different current densities.
233–245
Scalable and general synthesis of spinel manganese-based cathodes with hierarchical yolk–shell structure and superior lithium storage properties
Yu Wu, Junting Zhang, and Chuanbao Cao*
Beijing Institute of Technology, China
Spinel manganese-based cathodes with a hierarchical yolk–shell structure were prepared via a simple and scalable morphologyinheritance strategy. The as-prepared materials exhibit superior lithium storage properties as cathodes of lithium ion batteries.
246–253
Theoretical investigations of transport properties of organic solvents in cation-functionalized graphene oxide membranes: Implications for drug delivery
Kai Song1, Yong Long2, Xun Wang2,*, and Gang Zhou1,*
1 Beijing University of Chemical Technology, China
2 Tsinghua University, China
The solvent–cation interaction dominates directional transport of organic solvent in the alkali and alkaline earth cationdecorated graphene oxide (M-GO) membranes by the site-to-site mechanism.The competition between energy consumption by the solvent–cation interaction and energy expenditure by the solvent–epoxy (–hydroxyl) interaction enables the M-GO membranes with the selective permeability to a wide range of solvents.
254–263
Ultrasensitive detection of cancer biomarker microRNA by amplification of fluorescence of lanthanide nanoprobes
Lianyu Lu1,2, Datao Tu2,*, Yan Liu2, Shanyong Zhou2, Wei Zheng2, and Xueyuan Chen1,2,*
1 Fuzhou University, China
2 Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, China
We demonstrate application of a strategy based on nanoprobe dissolution-enhanced fluorescence amplification combined with a reconstructive molecular beacon for sensitive and specific detection of cancer biomarker microRNA.
264–273
Graphene electrode with tunable charge transport in thin-film transistors
Ick-Joon Park1, Tae In Kim1, In-Tak Cho2, Chang-Woo Song3, Ji-Woong Yang3, Hongkeun Park1, Woo-Seok Cheong3, Sung Gap Im4, Jong-Ho Lee2, and Sung-Yool Choi1,*
1 Korea Advanced Institute of Science and Technology (KAIST), Republic of Korea
2 Seoul National University, Republic of Korea
3 Electronics and Telecommunications Research Institute, Republic of Korea
We systematically investigate the tunable charge transport in n-channel thin film transistors by n-type doping of graphene electrodes with alkali metal carbonates, which effectively controls the carrier injection from graphene to the channel material, and results in improved electrical characteristics in the devices. Furthermore, the level of contact noise originating from the barrier height fluctuation is analyzed by low-frequency 1/f noise measurements for the first time to understand the tunable charge transport mechanism.
274–286
Egg-like magnetically immobilized nanospheres: A longlived catalyst model for the hydrogen transfer reaction in a continuous-flow reactor
Yongjian Ai1,2, Zenan Hu1, Zixing Shao2, Li Qi1, Lei Liu1, Junjie Zhou1, Hongbin Sun1,*, and Qionglin Liang2,*
1 Northeastern University, China
2 Tsinghua University, China
An egg-like Fe3O4@nSiO2-NH2-Fe2O3·xBi2O3@mSiO2 magnetically immobilized nanocatalyst was developed to reduce nitroarenes. The active species, Fe2O3·xBi2O3, was immobilized on the magnetic silica sphere and further encapsulated with a mesoporous silica shell; thus, the catalyst showed such a long lifetime that it maintained its activity for more than 1,500 cycles in a packed-bed continuous microreactor.
287–299
Carbon nanotube network film-based ring oscillators with sub 10-ns propagation time and their applications in radio-frequency signal transmission
Yingjun Yang, Li Ding, Hengjia Chen, Jie Han, Zhiyong Zhang*, and Lian-Mao Peng*
Peking University, China
We report high-performance field-effect transistors based on solution-derived carbon nanotube films and explore their applications in radio-frequency integrated circuits. The oscillation frequency of the optimized five-stage ring oscillator (RO) based on carbon nanotube film is up to 17.4 MHz. The ROs are used as carrier-wave generators in radio-frequency systems to demonstrate a complete signal transmission process, which suggests that carbon nanotube (CNT) thin-film electronics may soon find their way to radiofrequency applications.
300–310
Design of dual metal ions/dual amino acids integrated photoluminescent logic gate by high-molecular weight protein-localized Au nanoclusters
Liu Liu, Hui Jiang*, and Xuemei Wang*
Southeast University, China
An integrated logic gate was fabricated based on the photoluminescent response of alkaline phosphatase-coated Au nanoclusters to dual metal ions/dual amino acids.
311–322
Electrosynthesis of Co3O4 and Co(OH)2 ultrathin nanosheet arrays for efficient electrocatalytic water splitting in alkaline and neutral media
Lin Zhang1, Bingrui Liu1, Ning Zhang1,2,*, and Mingming Ma1,*
1 University of Science and Technology of China, China
2 Hefei University, China
We report a simple electrodeposition method for synthesizing Co3O4 and Co(OH)2 ultrathin nanosheet arrays (UNA) without templates or surfactants; the Co3O4 and Co(OH)2 UNA exhibit high activity for oxygen and hydrogen evolution reactions, respectively, in both alkaline and neutral media.
323–333
Biocompatibility of boron nitride nanosheets
Srikanth Mateti1, Cynthia S. Wong1, Zhen Liu1, Wenrong Yang1, Yuncang Li2, Lu Hua Li1, and Ying Chen1,*
1 Deakin University, Australia
2 RMIT University, Australia
The biocompatibility of boron nitride (BN) nanosheets was evaluated using osteoblast-like cells (SaOS2). The biocompatibility of BN nanomaterials depends on their size, shape, structure, and surface chemical properties.
334–342
High-yield synthesis and liquid-exfoliation of twodimensional belt-like hafnium disulphide
Harneet Kaur1,2,*, Sandeep Yadav3, Avanish K. Srivastava1, Nidhi Singh1, Shyama Rath4, Jörg J. Schneider3, Om P. Sinha5, and Ritu Srivastava1,*
1 Council of Scientific and Industrial Research, India
2 NPL, India
3 Technische Universität Darmstadt, Germany
4 University of Delhi, India
5 Amity University UP, India
A simple chemical-vapor transport route is demonstrated to synthesize layered belt-like nano-crystals of hafnium disulphide followed by liquid-phase exfoliation to produce stable few-layer nanosheets for electronic applications.
343–353
Actinide endohedral boron clusters: A closed-shell electronic structure of U@B40
Tianrong Yu, Yang Gao, Dexuan Xu, and Zhigang Wang*
Jilin University, China
Molecular orbital energy levels and electron density difference map of U@B40 indicate strong covalent bonding.
354–359
The role of water in methane adsorption and diffusion within nanoporous silica investigated by hyperpolarized 129Xe and 1H PFG NMR spectroscopy
Yuanli Hu1,2, Mingrun Li1, Guangjin Hou1, Shutao Xu1, Ke Gong1,2, Xianchun Liu1, Xiuwen Han1, Xiulian Pan1,*, and Xinhe Bao1,*
1 Dalian Institute of Chemical Physics, Chinese Academy of Sciences, China
2 University of Chinese Academy of Sciences, China
Silica materials with one-dimensional pores, ZSM-22, MCM-41, and SBA-15, were chosen to model the inorganic nanopores in shale. Water adsorption does not affect the pore size of ZSM-22 and MCM-41 zeolites, and hence has little influence on the self-diffusivity of methane. However, water reduces the pore size of SBA-15, which retards diffusion of methane.
360–369
Pristine mesoporous carbon hollow spheres as safe adjuvants induce excellent Th2-biased immune response
Manasi Jambhrunkar, Meihua Yu, Hongwei Zhang, Prasanna Abbaraju, Anand Kumar Meka, Antonino Cavallaro, Yao Lu, Neena Mitter*, and Chengzhong Yu*
The University of Queensland, Australia
Mesoporous hollow carbon spheres with a high antigen loading capacity, enhanced uptake by antigen presenting cells (APCs), and an excellent safety profile are an effective adjuvant for stimulating the immune response in a Th2-biased manner.
370–382
Spermine induced reversible collapse of deoxyribonucleic acid-bridged nanoparticle-based assemblies
Kristian L. Göeken1, Richard B. M. Schasfoort1, Vinod Subramaniam1,2, and Ron Gill1,3,*
1 University of Twente, the Netherlands
2 Vrije Universiteit Amsterdam, the Netherlands
3 Saxion University of Applied Sciences, the Netherlands
Distances in DNA-bound nanoparticle assemblies can be reversibly modulated using spermine-induced DNA collapse. This allows dynamic nanometer-scale movement by reducing the nanoparticle gap size to less than 15% of the original size, resulting in strong plasmon–plasmon coupling.
383–396
Prolonged and highly efficient intracellular extraction of photosynthetic electrons from single algal cells by optimized nanoelectrode insertion
Hyeonaug Hong1, Yong Jae Kim1, Myungjin Han1, Gu Yoo1, Hyun Woo Song1, Youngcheol Chae1, Jae-Chul Pyun1, Arthur R. Grossman2, and WonHyoung Ryu1,*
1 Yonsei University, Republic of Korea
2 Stanford University, USA
A cantilever nanoelectrode (CNE) system for directly extracting photosynthetic electrons from single algal cells is developed. The CNE system enables in situ cell insertion analysis as well as prolonged and highly efficient harvesting of photosynthetic electrons.
397–409
Strong and stiff Ag nanowire-chitosan composite films reinforced by Ag–S covalent bonds
Xiao-Feng Pan1, Huai-Ling Gao2, Yang Su1, Ya-Dong Wu1, Xiang-Ying Wang1, Jing-Zhe Xue2, Tao He1, Yang Lu1,*,Jian-Wei Liu2, and Shu-Hong Yu2,*
1 Hefei University of Technology, China
2 University of Science and Technology of China, China
Silver nanowire (NW)-reinforced chitosan (CS) and thiolated chitosan (TCS) films were fabricated by a facile spray induced self-assembly process, in which the films are reinforced by Ag–S covalent bonds. The tensile strength of the optimized Ag NW-TCS film was up to 3.9 and 1.5 times higher than that of pure TCS and Ag NW-CS films.
410–419
Layered material GeSe and vertical GeSe/MoS2 p-n heterojunctions
Wui Chung Yap1, Zhengfeng Yang1, Mehrshad Mehboudi2, Jia-An Yan3, Salvador Barraza-Lopez2, and Wenjuan Zhu1,*
1 University of Illinois at Urbana-Champaign, USA
2 University of Arkansas, USA
3 Towson University, USA
Transport properties of GeSe and its heterostructures with MoS2 were investigated both experimentally and theoretically. GeSe exhibits a markedly anisotropic electronic transport, with maximum conductance along the armchair direction. Density functional theory calculations reveal that the effective mass is 2.7 times larger along the zigzag direction than the armchair direction. The temperature dependence of the currents in GeSe/MoS2 heterojunction reveal that GeSe and MoS2 have a type-II band alignment with a conduction band offset of ~ 0.234 eV.
420–430
Fabrication of rigid and flexible SrGe4O9 nanotube-based sensors for room-temperature ammonia detection
Tingting Huang1,2, Zheng Lou2, Shuai Chen1,2, Rui Li1,2, Kai Jiang3, Di Chen1,*, and Guozhen Shen2,4,*
1 University of Science and Technology Beijing, China
2 Institute of Semiconductors, Chinese Academy of Sciences, China
3 Chinese PLA General Hospital, China
4 University of Chinese Academy of Sciences, China
Polycrystalline SrGe4O9 nanotubes were prepared to fabricate high-performance rigid, flexible gas sensors for detecting ammonia at room temperature.
431–439
Chloride-intercalated continuous chemical vapor deposited graphene film with discrete adlayers
Qiao Chen, Li Zhang, and Hongwei Zhu*
Tsinghua University, China
Iron chloride flake crystals integrate with a graphene surface and are intercalated between graphene adlayers. Thus, heavy doping of graphene is achieved.
440–448
Metal-organic framework-derived porous shuttle-like vanadium oxides for sodium-ion battery application
Yangsheng Cai1, Guozhao Fang1, Jiang Zhou1,*, Sainan Liu1, Zhigao Luo1, Anqiang Pan1,*, Guozhong Cao2, and Shuquan Liang1,*
1 Central South University, China
2 University of Washington, USA
Porous shuttle-like vanadium oxides (i.e., V2O5, V2O3/C) were prepared by using MIL-88B (V) as precursors with a specific calcination process. The derived V2O3/C exhibited excellent electrochemical performance as an anode material for sodium-ion batteries.
449–463
Intracellular in situ labeling of TiO2 nanoparticles for fluorescence microscopy detection
Koshonna Brown1, Ted Thurn1,†, Lun Xin1, William Liu1,ǂ, Remon Bazak1,ǁ, Si Chen2, Barry Lai2, Stefan Vogt2, Chris Jacobsen3, Tatjana Paunesku1, and Gayle E. Woloschak1,*
1 Northwestern University, USA
2 Argonne National Laboratory, USA
3 Weinberg College of Arts and Sciences, USA
† Present Address: U.S. Department of State, USA
ǂ Present Address: Food and Drug Administration, USA
ǁ Present Address: Azarita Medical Campus, Egypt
TiO2 nanoparticles have low natural contrast; two novel ways to label them in situ to enable optical microscopy were developed, based on standard tools used in cell biology. In each case, visible fluorescence was achieved in situ in cells fixed after nanoparticle uptake. Specificity of labeling was confirmed by X-ray fluorescence microscopy.
464–476
Enhanced sulfide chemisorption by conductive Al-doped ZnO decorated carbon nanoflakes for advanced Li–S batteries
Yangbo Kong, Jianmin Luo, Chengbin Jin, Huadong Yuan, Ouwei Sheng, Liyuan Zhang, Cong Fang, Wenkui Zhang, Hui Huang, Yang Xia, Chu Liang, Jun Zhang, Yongping Gan, and Xinyong Tao*
Zhejiang University of Technology, China
Aluminium-doped zinc oxide (AZO@C) nanocomposites have been successfully synthesized through a facile biotemplating method using kapok fibers as both the template and carbon source. When applied in Li–S batteries, the corresponding cathodes showed excellent electrochemical performance owing to the high conductivity of AZO, which can effectively suppress the shuttle effect of lithium polysulfides (LiPSs), and increase the LiPSs conversion and Li2S precipitation rates.
477–489
High-performance aqueous symmetric sodium-ion battery using NASICON-structured Na2VTi(PO4)3
Hongbo Wang1, Tianran Zhang2, Chao Chen3, Min Ling4, Zhan Lin1,3,*, Shanqing Zhang4, Feng Pan5, and Chengdu Liang1
1 Zhejiang University, China
2 National University of Singapore, Singapore
3 Guangdong University of Technology, China
4 Griffith University, Australia
5 Peking University, China
An aqueous sodium-ion battery is fabricated using a single NASICON-structured Na2VTi(PO4)3 material with the redox couples of V4+/V3+ and Ti4+/Ti3+ working on the cathode and anode, respectively. The high-safety and low-cost symmetric full-cell exhibits an impressive cyclability suitable for applications in stationary batteries.
490–498
Ultrathin AgPt alloy nanowires as a high-performance electrocatalyst for formic acid oxidation
Xian Jiang1, Gengtao Fu1, Xia Wu1, Yang Liu1, Mingyi Zhang2, Dongmei Sun1, Lin Xu1,*, and Yawen Tang1,*
1 Nanjing Normal University, China
2 Harbin Normal University, China
Ultrathin AgPt alloy nanowires are successfully achieved with a high yield and uniformity by a facile hydrothermal synthetic strategy. Due to the alloyed composition and one-dimensional (1D) structure, the ultrathin AgPt nanowires exhibit a superior electrocatalytic activity and better CO tolerance for the formic acid oxidation reaction than AgPt nanoparticles or a commercial Pt black catalyst.
499–510
Fiber gas sensor-integrated smart face mask for roomtemperature distinguishing of target gases
Zhiyi Gao1,2, Zheng Lou2, Shuai Chen2, La Li2, Kai Jiang3, Zuoling Fu1,*, Wei Han1,*, and Guozhen Shen2,4,*
1 Jilin University, China
2 Institute of Semiconductors, Chinese Academy of Sciences, China
3 Chinese PLA General Hospital, China
4 University of Chinese Academy of Sciences, China
A smart multi-functional face mask was fabricated with three types of wearable fiber gas sensors that had the ability to selectively distinguish gases at room temperature.
511–519
Improved plasmon-assisted photoelectric conversion efficiency across entire ultraviolet–visible region based on antenna-on zinc oxide/silver three-dimensional nanostructured films
Lijuan Yan1, Yang Liu2, Yaning Yan1, Lanfang Wang1, Juan Han1, Yanan Wang1, Guowei Zhou1, Mark T. Swihart2, and Xiaohong Xu1,3,*
1 Information Materials of Ministry of Education, China
2 University at Buffalo (SUNY), USA
3 Research Institute of Materials Science of Shanxi Normal University, China
We designed and fabricated ZnO/Ag nanostructured films to enhance the photoelectric conversion efficiency. The photocurrent increased 3.75 times for the antenna-on ZnO/Ag three-dimensional nanostructured film (ZAZAZA) relative to a pure ZnO film (Z) under ultraviolet–visible light illumination, indicating great potential for application in photovoltaic or photoelectrochemical devices.
520–529
Flexible design of gradient multilayer nanofilms coated on carbon nanofibers by atomic layer deposition for enhanced microwave absorption performance
Shichao Zhao1,2, Lili Yan1,2, Xiaodong Tian1,2, Yequn Liu1, Chaoqiu Chen1, Yunqin Li1,2, Jiankang Zhang1,2, Yan Song1, and Yong Qin1,*
1 Institute of Coal Chemistry, Chinese Academy of Sciences, China
2 University of Chinese Academy of Sciences, China
Specifically designed gradient multilayer nanofilms with gradually increasing conductivity coated on electrospun carbon nanofibers by atomic layer deposition act as an intermediate layer leading to a remarkably enhanced impedance matching between air and the carbon nanofibers, and an excellent microwave absorption performance.
530–541
Nafion-assisted exfoliation of MoS2 in water phase and the application in quick-response NIR light controllable multi-shape memory membrane
Wei Jia, Beibei Tang*, and Peiyi Wu*
Fudan University, China
Nafion is adopted as a dispersant for assisting the water-phase exfoliation of MoS2. Composite membranes of Nafion-modified MoS2/Nafion show excellent near-infrared light-controllable multishape memory performance with convenient operation and quick response.
542–553
Highly-anisotropic optical and electrical properties in layered SnSe
Shengxue Yang1,2,*, Yuan Liu1, Minghui Wu3, Li-Dong Zhao2, Zhaoyang Lin1, Hung-chieh Cheng1, Yiliu Wang1, Chengbao Jiang2, Su-Huai Wei4, Li Huang3, Yu Huang1, and Xiangfeng Duan1,*
1 University of California, Los Angeles, USA
2 Beihang University, China
3 South University of Science and Technology of China, China
4 Beijing Computational Science Research Center, China
We report a systematic study of the in-plane anisotropic properties of layered SnSe, using angle-resolved Raman cattering, optical absorption, and electrical transport methods.
554–564
Self-assembled formation of long, thin, and uncoalesced GaN nanowires on crystalline TiN films
David van Treeck*, Gabriele Calabrese, Jelle J. W. Goertz, Vladimir M. Kaganer, Oliver Brandt, Sergio Fernández-Garrido, and Lutz Geelhaar
Leibniz-Institut im Forschungsverbund Berlin e.V., Germany
We investigate in detail the self-assembled nucleation and growth of GaN nanowires on TiN. It is demonstrated that the TiN substrate allows the growth of long, thin and uncoalesced GaN nanowires which are suitable for the growth of core–shell heterostructures.
565–576
Site-specific determination of TTR-related functional peptides by using scanning tunneling microscopy
Lanlan Yu1,3,4, Yongfang Zheng1,3,4, Jing Xu1,4, Fuyang Qu1,4, Yuchen Lin1,4, Yimin Zou1,4, Yanlian Yang1,*, Sally L. Gras2,*, and Chen Wang1,*
1 National Center for Nanoscience and Technology, China
2 The University of Melbourne, Australia
3 Tsinghua University, China
4 University of Chinese Academy of Sciences, China
TTR-related functional peptides were designed with two different functional motifs. Here, we used scanning tunneling microscopy to achieve site-specific analyses of their assembly structures for rational design and optimization.
577–585
Cross-linked self-assembling peptide scaffolds
Raffaele Pugliese1, Amanda Marchini1,2, Gloria Anna Ada Saracino2, Ronald N. Zuckermann3, and Fabrizio Gelain1,2,*
1 Opera di San Pio da Pietralcina, Italy
2 A. O. Ospedale Niguarda Cà Granda, Italy
3 Lawrence Berkeley National Laboratory, USA
Self-assembling peptides have an unquestionable impact on regenerative medicine applications, because they feature biomimetic nano-architectures that mimic the complexity of natural peptidebased extracellular matrices of living tissues. Although selfassembling peptides have attracted increasing interest in the scientific community as tailorable, synthetic, and biocompatible biomaterials, their applications have been hampered so far by their poor mechanical properties, yielding soft and fragile scaffolds unsuitable for many medical applications. Here, by using a tailored cross-linking reaction, it was possible to covalently link peptide molecules after self-assembly, giving rise to dramatically stiffer, flexible, and tailorable biomimetic scaffolds, thus expanding their potential for many applications in regenerative medicine and beyond.
586–602
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