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Nano-Micro Letters 2021年第2期13卷 305-362页

作者： Abhay V.Agrawal Naveen Kumar Mukesh Kumar Functional and Renewable Energy Materials Laboratory Indian Institute of Technology RoparRupnagarPunjab 140001India

Nitrogen dioxide(NO2),a hazardous gas with acidic nature,is continuously being liberated in the atmosphere due to human activity.The NO2 sensors based on traditional materials have limitations of high-temperature requirements,slow recovery,and performance degradation under harsh environmental conditions.These limitations of traditional materials are forcing the scientific community to discover future alternative NO2 sensitive materials.Molybdenum disulfide(mos2)has emerged as a potential candidate for developing next-generation NO2 gas sensors.mos2 has a large surface area for NO2 molecules adsorption with controllable morphologies,facile integration with other materials and compatibility with internet of things(IoT)devices.The aim of this review is to provide a detailed overview of the fabrication of mos2 chemiresistance sensors in terms of devices(resistor and transistor),layer thickness,morphology control,defect tailoring,heterostructure,metal nanoparticle doping,and through light illumination.Moreover,the experimental and theoretical aspects used in designing mos2-based NO2 sensors are also discussed extensively.Finally,the review concludes the challenges and future perspectives to further enhance the gas-sensing performance of mos2.Understanding and addressing these issues are expected to yield the development of highly reliable and industry standard chemiresistance NO2 gas sensors for environmental monitoring.

关键词： mos2 NO2 gas sensors Light illumination Heterojunction

Thickness-dependent morphologies of Ag on n-layer mos2 and its surface-enhanced Raman scattering

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纳米研究：英文版 2016年第6期9卷 1682-1688页

作者： Ya Deng Minjiang Chen Jian Zhang Zihao Wang Wenbin Huang Yun Zhao Jean PierreNshimiyimana Xiao Hu Xiannian Chi Gu Hou ,Xueyao Zhang Yanjun Guo Lianfeng Sun CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology 8eijing 100190 China School of Physics Shandong University Jinan 250100 China Chinese Academy of Sciences Beijing 100049 China

n 层瞬间 2 上的 Ag nanoparticles 的尺寸和密度展出 thicknessdependent 行为。分别地，这些粒子的尺寸和密度与增加 n 层瞬间 2 的层数字(n) 增加了并且减少。而且，这底层上的 Ag 的散布的提高表面的拉曼(重量的单位) 被观察。这散... 详细信息

n 层瞬间 2 上的 Ag nanoparticles 的尺寸和密度展出 thicknessdependent 行为。分别地，这些粒子的尺寸和密度与增加 n 层瞬间 2 的层数字(n) 增加了并且减少。而且，这底层上的 Ag 的散布的提高表面的拉曼(重量的单位) 被观察。这散布的改进因素与瞬间 2 的厚度变化了。管理上述的厚度依赖的机制被建议并且讨论。

关键词：表面增强拉曼散射厚度变化二硫化钼 Ag 形态 mos2 N层结构 SERS

Construction of novel TiO2/Bi4Ti3O(12)/mos2 core/shell nanofibers for enhanced visible light photocatalysis

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Journal of Materials Science & Technology 2020年第1期36卷 97-105页

作者： Meng-Jie Chang Wen-Na Cui Jun Liu Kang Wang Hui-Ling Du Lei Qiu Si-Meng Fan Zhen-Min Luo Department of Materials Science and Engineering Xi'an University of Science and TechnologyXi'an710054China School of Safety Science and Engineering Xi'an University of Science and TechnologyXi'an710054China

TiO2/Bi4 Ti3 O12 hybrids have been widely prepared as promising photocatalysts for decomposing organic contaminations.However,the insufficient visible light absorption and low charge separation efficiency lead to their poor photocatalytic activity.Herein,a robust methodology to construct novel TiO2/Bi4 Ti3 O12/mos2 core/shell structures as visible light photocatalysts is presented.Homogeneous bismuth oxyiodide(BiOI) nanoplates were immobilized on electrospun TiO2 nanofiber surface by successive ionic layer adsorption and reaction(SILAR) method.TiO2/Bi4 Ti3 O12 core/shell nanofibers were conveniently prepared by partial conversion of TiO2 to high crystallized Bi4 Ti3 O12 shells through a solid-state reaction with BiOI nanoplates,which is accompanied with certain transition of TiO2 from anatase to rutile phase.Afterwards,mos2 nanosheets with several layers thick were uniform decorated on the TiO2/Bi4 TiO3 O12 fiber surface resulting in TiO2/Bi4 Ti3 O12/mos2 structures.Significant enhancement of visible light absorption and photo-generated charge separation of TiO2/Bi4 Ti3 O12 were achieved by introduction of mos2.As a result,the optimized TiO2/Bi4 Ti3 O12/mos2-2 presents 60% improvement for photodegrading RhB after 120 min irradiation under visible light and 3 times higher of apparent reaction rate constant in compared with the TiO2/Bi4 Ti3 O12.This synthetic method can also be used to establish other photocatalysts simply at low cost,therefore,is suitable for practical applications.

关键词： Electrospinning Bi4Ti3O12 Nanofibers mos2 Visible light photocatalysis

Synthesis of unique-morphological hollow microspheres of mos2@montmorillonite nanosheets for the enhancement of photocatalytic activity and cycle stability

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Journal of Materials Science & Technology 2020年第6期41卷 88-97页

作者： Peng Chen Shilin Zeng Yunliang Zhao Shichang Kang Tingting Zhang Shaoxian Song Hubei Key Laboratory of Mineral Resources Processing and Environment Wuhan University of TechnologyLuoshi Road 122WuhanHubei430070China School of Resources and Environmental Engineering Wuhan University of TechnologyLuoshi Road 122WuhanHubei430070China

In this work,mos2@montmorillonite nanosheets hollow microspheres(mos2@MMTNS-HMS)with a novel morphology structure was successfully synthesized through loading mos2 to the surface of MMTNS-HMS via hydrothermal method.The novel material has been characterized through the measurements of SEM,TEM,Raman spectra and UV–vis absorption spectra.The results have shown that mos2@MMTNS-HMS emerges higher light-utilization efficiency,density of edge active sites and separation of photoelectrons,owing to its unique hollow structure,vertically-aligned mos2 nanosheets,which greatly enhances its photocatalytic activity.Furthermore,the cycle stability of mos2@MMTNS-HMS is much higher than that of pristine mos2,which is attributed to that MMTNS-HMS greatly inhibits the oxidation of mos2 during photocatalytic.mos2@MMTNS-HMS could be a promising photocatalyst for the applications in the elimination of organic pollutants.

关键词： mos2 Montmorillonite Hollow microsphere Photocatalytic Methyl orange

Measuring the thermal conductivity and interfacial thermal resistance of suspended mos2 using electron beam self-heating technique

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Science Bulletin 2018年第7期63卷 452-458页

作者： Adili Aiyiti Xue Bai Jing Wu Xiangfan Xu Baowen Li Center for Phononics and Thermal Energy Science School of Physics Science and Engineering Tongji University Shanghai 200092 China China-EU Joint Centerfor Nanophononics School of Physics Science and Engineering Tong ji University Shanghai 200092 China Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology School of Physics Science and Engineering Tongji University Shanghai 200092 China NUS Graduate School for Integrative Sciences and Engineering National University of Singapore Kent Ridge 119620 Singapore Institute of Materials Research and Engineering (IMRE) 2 Fusionopolis Way Innovis #08-03 138634 Singapore Department of Mechanical Engineering University of Colorado Boulder CO 80309-0427 USA

Establishment of a new technique or extension of an existing technique for thermal and thermoelectric measurements to a more challenging system is an important task to explore the thermal and thermoelectric properties of various materials and systems. The bottleneck lies in the challenges in measuring the thermal contact resistance. In this work, we applied electron beam self-heating technique to derive the intrinsic thermal conductivity of suspended Molybdenum Disulfide(mos_2) ribbons and the thermal contact resistance, with which the interfacial thermal resistance between few-layer mos_2 and Pt electrodes was calculated. The measured room temperature thermal conductivity of mos_2 is around ~30 W/(m K),while the estimated interfacial thermal resistance is around ~2 × 10^(-6)m^2 K/W. Our experiments extend a useful branch in application of this technique for studying thermal properties of suspended layered ribbons and have potential application in investigating the interfacial thermal resistance of different twodimensional(2 D) heterojunctions.

关键词： mos2 热传导性技术测量横梁电子加热界面

Mimicking natural paragenetic semiconducting minerals mos2/sphalerite：A simple method to fabricate visible-light photocatalyst

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Science China(Technological Sciences) 2017年第12期60卷 1870-1877页

作者： LIU Yi LI Yan LU AnHuai WANG ChangQiu DING HongRui The Key Laboratory of Orogenic Belts and Crustal Evolution Beijing Key Laboratory of Mineral Environmental Function School of Earth and Space Sciences Peking University Beijing 100871 China

Natural paragenetic semiconducting minerals give important hints for fabricating stable and effective photocatalysts, which can be widely used in solar energy harvest and pollution control. To enhance the photoactivity of natural sphalerite(ZnS), needle-like nanocrystal mos_2 was loaded on sphalerite surface through a hydrothermal method, mimicking the intergrowth of molybdenite(mos_2) and sphalerite in nature. The resultant coupled mos_2/sphalerite exhibited a hydrogen evolution reaction(HER) potential at-0.35 V(vs. NHE), and showed obvious photoresponse under visible-light. The photodegradation rate of methyl orange(MO) over mos_2/sphalerite could reach 75% within 180 min. Compared to sphalerite, coupled mos_2/sphalerite had a higher photocurrent,more positive HER potential and 66% higher photodegradation rate. The enhanced photoactivity was attributed to the charge transfer from sphalerite to mos_2 and high electrons' mobility on mos_2 layer.

关键词： sphalerite mos2 coupled semiconductor visible-light photocatalysis

Controlling dispersion and morphology of mos2 nanospheres by hydrothermal method using SiO2 as template

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Chinese Journal of Chemical Engineering 2018年第5期26卷 1229-1234页

作者： Zhenwei Zhang Peng Wang Fei Wang Yaqing Li Wei Lu Xingmao Jiang Xia Gui Zhi Yun College of Chemical Engineering Nanjing Tech University Nanjing 210009 China College of Mathematics Science and Chemical Engineering Changzhou Institute of Technology Changzhou 213022 China Department of Chemical Engineering Changzhou University Changzhou 213016 China Hubei Key Lab of Novel Reactor & Green Chemical Technology Key Laboratory for Green Chemical Process of Ministry of Education School of Chemical Engineering and Pharmacy Wuhan Institute of Technology China

Monodispersed mos_2 nanospheres were successfully synthesized by using SiO_2 as hard template. The size and morphology of the mos_2 nanospheres could be finely controlled by the content of SiO_2 and sulfur precursors. Furthermore, higher surface area of monodispersed mos_2 nanospheres exhibited high reaction rate for hydrodesulfurization(HDS) of dibenzenethiophene(DBT).

关键词： mos2 SiO2 形态学模板控制热水分散反应率

Porous carbon coupled with an interlaced MoP–mos2 heterojunction hybrid for efficient hydrogen evolution reaction

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Journal of Energy Chemistry 2020年第6期29卷 45-51,I0003页

作者： Qiusheng Zhou Jianrui Feng Xinwen Peng Linxin Zhong Runcang Sun State Key Laboratory of Pulp and Paper Engineering South China University of TechnologyGuangzhou 510640GuangdongChina College of Chemistry Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education)Nankai UniversityTianjin 300071China Center for Lignocellulose Science and Engineering and Liaoning Key Laboratory Pulp and Paper EngineeringDalian Polytechnic UniversityDalian 116034LiaoningChina

The design and development of electrocatalysts composed of non-noble-metal catalysts with both large surface area and high electrical conductivities are crucial for the hydrogen evolution reaction(HER).Here,a xylose-based porous carbon is coupled with a mos2-Mo P heterojunction(mos2-Mo P/FPC)hybrid and used as a promising catalyst for HER.The hybrid is prepared by immobilizing petal-like mos2 nanosheets on porous carbon(mos2/FPC),followed by controlling the phosphidation in Ar/H2 to form mos2-Mo P/FPC.Red phosphorus provides the P species that can induce the construction of the heterojunction under the reducing atmosphere,along with the generation of a Mo P phase and the splitting of the mos2 phase.The as-prepared mos2-Mo P/FPC catalyst offers a low overpotential of 144 mV at a current density of 10 m A cm^-2 and a small Tafel slope of 41 m V dec^-1 for the HER in acidic media,as well as remarkable stability.Apart from the active nature of the hybrid,its outstanding activity is attributed to the mos2-Mo P heterojunction,and the good charge/mass-transfer ability of porous carbon.This strategy provides a new method to develop and design low-cost and high-performance catalysts for the HER.

关键词： mos2 Heterojunction Carbon Electrocatalyst

Controlling the luminescence of monolayer mos2 based on the piezoelectric effect

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Nano Research 2017年第7期10卷 2527-2534页

作者： Lijie Li Yan Zhang Multidisciplinary Nanotechnology Centre College of Engineering Swansea University Bay Campus SA 1 8EN UK School of Physical Electronics University of Electronic Science and Technology of China Chengdu 610054 China

我们在操作单层铝二硫化物的刺激排放上报导(有压电的效果的瞬间 2) 。分析基于量力学。这二维的材料的刺激排放被模仿了建立在全部的排放率和光子刺激的精力之间的关系。我们证明压电导致费用由改变搬运人集中提高排放率。排放紧张与... 详细信息

我们在操作单层铝二硫化物的刺激排放上报导(有压电的效果的瞬间 2) 。分析基于量力学。这二维的材料的刺激排放被模仿了建立在全部的排放率和光子刺激的精力之间的关系。我们证明压电导致费用由改变搬运人集中提高排放率。排放紧张与在低密度的范围的搬运人密度成正比，这被发现，并且最后在高密度的区域到达稳定的价值。外部地应用的机械力量也在单层瞬间 2 的第二泛音代导致一个变化。

关键词：压电效应 mos2 单层发光控制受激发射二硫化钼载流子浓度

Polymer-Decorated 2D mos2 Synaptic Transistors for Biological Bipolar Metaplasticities Emulation

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Chinese Physics Letters 2020年第8期37卷 177-188页

作者：赵宇航刘标阳军亮何军蒋杰 Affiliations Hunan Key Laboratory of Super Microstructure and Ultrafast Process School of Physics and ElectronicsCentral South UniversityChangsha 410083China

Biological bipolar metaplasticities were successfully mimicked in two-dimensional(2D)mos2 transistors via the implementation of two different mos2 surface decorations,poly(vinyl alcohol)(PVA)and chitosan bio-polymers.Interestingly,the depressing metaplasticity was successfully mimicked when the PVA bio-polymer was used as the surface decoration layer,whereas the metaplasticity of long-term potentiation was realized when the chitosan bio-polymer was taken as the surface decoration layer.Furthermore,the electronic band structures of the 2D mos2 devices with different surface decorations were further investigated using first-principles calculations for understanding the underlying mechanisms of such bipolar metaplasticities.These results will deepen our understanding of metaplasticity,and have great potential in neuromorphic computing applications.

关键词： mos2 poly(vinyl plasticity