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不同载荷及转速条件下mos_(2)涂层的摩擦磨损性能研究

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核聚变与等离子体物理 2023年第1期43卷 99-104页

作者：董思成钟利但敏许泽金王新超周毅金凡亚核工业西南物理研究院成都610041

为获得二硫化钼(mos_(2))涂层在聚变堆部件表面使用条件下的摩擦磨损特性,采用单极性脉冲磁控溅射技术在铁铬镍基高温合金A286上制备了厚度为2μm的mos_(2)涂层,并针对mos_(2)涂层在不同载荷及转速条件下的摩擦学性能展开了研究。经验证... 详细信息

为获得二硫化钼(mos_(2))涂层在聚变堆部件表面使用条件下的摩擦磨损特性,采用单极性脉冲磁控溅射技术在铁铬镍基高温合金A286上制备了厚度为2μm的mos_(2)涂层,并针对mos_(2)涂层在不同载荷及转速条件下的摩擦学性能展开了研究。经验证,沉积的mos_(2)涂层结晶度较好,沿(002)面择优取向;随测试转速的增加,摩擦系数逐渐减小,在转速为50r⋅min^(-1)时,摩擦系数平均值为0.0722;在转速固定时,摩擦系数随测试载荷的增加先减小后增大,当载荷为7N时达到最小平均值0.0763。

关键词： mos2 摩擦性能载荷转速

A universal etching-free transfer of mos2 films for applications in photodetectors

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Nano Research 2015年第11期8卷 3662-3672页

作者： Donglin Ma Jianping Shi Qingqing Ji Ke Chen Jianbo Yin Yuanwei Lin Yu Zhang Mengxi Liu Qingliang Feng Xiuju Song Xuefeng Guo Jin Zhang Yanfeng Zhang Zhongfan Liu Department of Physical Chemistry College of Chemistry and Molecular Engineering Peking University Beijing 700871 China Department of Materials Science and Engineering College of Engineering Peking University Beijing 100877 China

从生长底层转移瞬间 2 电影到目标底层上是为他们的实际应用的一个关键问题。而且，避免样品降级和底层破坏仍然是大挑战，因为当前的转移方法不可避免地采用蚀刻的湿化学药品，处理。我们为由使用 ultrasonication 转移瞬间 2 电影到... 详细信息

从生长底层转移瞬间 2 电影到目标底层上是为他们的实际应用的一个关键问题。而且，避免样品降级和底层破坏仍然是大挑战，因为当前的转移方法不可避免地采用蚀刻的湿化学药品，处理。我们为由使用 ultrasonication 转移瞬间 2 电影到任意的底层上开发了一个蚀刻免费的转移方法。简短，在在聚合物涂的瞬间 2 之间的接口的产生 ultrasonication 的 microbubbles 的倒塌电影和底层导致足够的力量到 delaminate 瞬间 2 电影。用这个方法，瞬间 2 电影能从所有底层(硅石，云母，锶 titanate，和蓝宝石) 被转移并且保留原来的样品形态学和质量。这个方法保证一个简单转移过程并且允许生长底层的复用，没有包含任何危险蚀刻剂。蚀刻免费的转移方法是可能的在光电探测器支持瞬间 2 的宽广应用程序。

关键词： mos2 光电探测器薄膜应用自由蚀刻生长基质腐蚀过程

In situ growth of different numbers of gold nanoparticles on mos_2 with enhanced electrocatalytic activity for hydrogen evolution reaction

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Chinese Physics B 2018年第6期27卷 473-478页

作者：赵宣何大伟王永生付晨 Key Laboratory of Luminescence and Optical Information Beijing Jiaotong University

Producing hydrogen through a hydrogen evolution reaction（HER） by splitting water at the suitable overpotential is a great alternative to solving the problems of environmental pollution and the energy crisis. Molybdenum sulfide（mos2）has attracted extensive attention as one of the most promising catalytic materials for HER. In this work, we design a facile method to in situ grow gold nanoparticles（Au NPs） on mos2. Different numbers of Au NPs with mos2 are used to find the best catalytic activity. Due to the larger active surface area and higher conductivity of the Au–mos2 composites, all the Au–mos2 composites exhibit more enhanced HER electroactivity than pure mos2. In brief, the new material architecture exhibits optimized HER activity with a low onset overpotential of 0.12 V, low Tafel slope of 0.163 V·dec^（-1）, and an excellent stability in acidic solution.

关键词： mos2 AuNPs hydrogen evolution reaction electrocatalysts

Enhancing the cycling stability of Na-ion batteries by bonding mos2 on assembled carbon-based materials

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Nano Materials Science 2019年第4期1卷 310-317页

作者： Pin Song Jun Di Lixing Kang Manzhang Xu Bijun Tang Jun Xiong Jiewu Cui Qingsheng Zeng Jiadong Zhou Yongmin He Qundong Fu Juan Peng Shasha Guo Bo Lin Jingyu Zhang Peng Meng Zheng Liu School of Materials Science&Engineering Nanyang Technological UniversitySingapore639798Singapore Institute for Energy Research Jiangsu University301 Xuefu RoadZhenjiang212013China School of Materials Science and Engineering Hefei University of TechnologyHefei230009China Stage Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering School of Chemistry and Chemical EngineeringNingxia UniversityYinchuan750021China

Room temperature Na-ion batteries(SIBs) show great potential for use as renewable energy storage systems.However, the large-scale application of SIBs has been hindered by the lack of an ideal SIBs anode material. We synthesized mos2 on carbonized graphene-chitosan(G-C) using the hydrothermal method. The strong interaction between the mos2 and the G-C greatly improved the electron transport rate and maintained the structural stability of the electrode, which lead to both an excellent rate capability and long cycle stability. The G-C monolith was proven to enhance the electrical conductivity of the composites and served as a matrix for uniformly dispersing active mos2 nanosheets(NSs), as well as being a buffer material to adapt to changes in volume during the cycle.Serving as an anode material for SIBs, the mos2-G-C electrode showed good cycling stability(527.3mAh g-1 at100 m A g-1 after 200 cycles), excellent rate capability, and a long cycle life(439.1 m Ah g-1 at 1 A g-1 after 200 cycles).

关键词： Na-ion batteries Carbon-based materials mos2 Long cycle life

Direct vapor phase growth process and robust photoluminescence properties of large area mos2 layers

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Nano Research 2014年第12期7卷 1759-1768页

作者： V. Senthilkumar Le C. Tam Yong Soo Kim Yumin Sim Maeng-Je Seong Joon. I. Jang Department of Physics and Energy Harvest Storage Research Center (EHSRC) University ofUIsan Ulsan 680-749 South Korea Department of Physics Applied Physics and Astronomy Binghamton University New York 13902 USA Department of Physics Chung-Ang University Seoul 156-756 South Korea

在那里在收获设备的光电子和精力的领域里在铝二硫化物的使用一直在种研究兴趣，由它的 indirect-to-direct 乐队差距 tunability 的优点。然而，获得大区域瞬间的薄电影为未来设备应用的 2 仍然是挑战。在现在的学习，先锋的数量(S... 详细信息

在那里在收获设备的光电子和精力的领域里在铝二硫化物的使用一直在种研究兴趣，由它的 indirect-to-direct 乐队差距 tunability 的优点。然而，获得大区域瞬间的薄电影为未来设备应用的 2 仍然是挑战。在现在的学习，先锋的数量(S 和哞 3 ) 系统地被改变以便优化高度水晶、大的区域瞬间的生长由化学蒸汽免职方法的 2 层。先锋的数量的小心的控制在大区域的合成被发现到关键因素高度水晶的薄片。层的厚度被拉曼光谱学和原子力量显微镜学证实。光性质和化学作文被光致发光(PL ) 和 X 光检查光电子光谱学学习。在 1.82 eV 的强壮的直接激子的排出物的出现(A 激子，与 55 个 thout 事件的规范的 PL 紧张[1.84 ??? 隰酐鱠? 鎄颩 ???? 頿?? 鲰？？

关键词：化学气相沉积法光致发光性质 mos2 生长过程面积 X射线光电子能谱过渡金属硫化物光电子能量

Enhanced four-wave mixing process near the excitonic resonances of bulk mos_2

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Photonics Research 2019年第3期7卷 251-259页

作者： BRIAN A.KO ALEXEI V.SOKOLOV MARLAN O.SCULLY ZHENRONG ZHANG HO WAI HOWARD LEE Department of Physics Baylor University The Institute for Quantum Science and Engineering Texas A&M University College Station Princeton University Princeton

Two-dimensional materials are generating great interest due to their unique electrical and optical properties.In particular, transition metal dichalcogenides such as molybdenum disulfide(mos_2) are attractive materials due to the existence of a direct band gap in the monolayer limit that can be used to enhance nonlinear optical phenomena, such as Raman spectroscopy. Here, we have investigated four-wave mixing processes in bulk mos_2 using a multiplex coherent anti-Stokes Raman spectroscopy setup. The observed four-wave mixing signal has a resonance at approximately 680 nm, corresponding to the energy of the A excitonic transition of mos_2. This resonance can be attributed to the increased third-order nonlinear susceptibility at wavelengths near the excitonic transition. This phenomenon could open the path to using mos_2 as a substrate for enhancing four-wave mixing processes such as coherent anti-Stokes Raman spectroscopy.

关键词： Two-dimensional materials excitonic resonances mos2

Field-effect transistors based on two-dimensional materials for logic applications

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Chinese Physics B 2013年第9期22卷 147-161页

作者：王欣然施毅张荣 National Laboratory of Microstructures and School of Electronic Science and Engineering Nanjing University

Field-effect transistors （FETs） for logic applications, graphene and mos2, are discussed. These materials have based on two representative two-dimensional （2D） materials, drastically different properties and require different consider- ations. The unique band structure of graphene necessitates engineering of the Dirac point, including the opening of the bandgap, the doping and the interface, before the graphene can be used in logic applications. On the other hand, mos2 is a semiconductor, and its electron transport depends heavily on the surface properties, the number of layers, and the carrier density. Finally, we discuss the prospects for the future developments in 2D material transistors.

关键词： graphene mos2 two-dimensional （2D） materials field-effect transistors

Transforming bilayer mos2 into single-layer with strong photoluminescence using UV-ozone oxidation

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Nano Research 2015年第12期8卷 3878-3886页

作者： Weitao Su Naresh Komar Steve J. Spencer Ning Dai Debdulal Roy Institute of Materials Physics Hangzhou Dianzi University Hangzhou 310018 China Ningbo Institute of Materials Technology & Engineering Chinese Academy of Sciences Ningbo 315201 China National Physical Laboratory Hampton Road Teddington Middlesex TWI 10LW UK

在射出设备的光的单个层的瞬间 2 的使用要求创新方法提高它的低光致发光(PL ) 量产量。在这个工作，我们报导有强壮的 PL 的单个层的瞬间 2 能被氧化准备用紫外臭氧的氧化的 bilayer 瞬间 2 。当与剥落得机械地的单个层的瞬间 2, 相比... 详细信息

在射出设备的光的单个层的瞬间 2 的使用要求创新方法提高它的低光致发光(PL ) 量产量。在这个工作，我们报导有强壮的 PL 的单个层的瞬间 2 能被氧化准备用紫外臭氧的氧化的 bilayer 瞬间 2 。当与剥落得机械地的单个层的瞬间 2, 相比紫外臭氧的氧化准备的单个层的瞬间 2 的 PL 紧张到 2030 次被提高，我们显示出那。我们证明中立激子和 trions (控告的激子) 的 PL 紧张能极大地在氧化瞬间 2 样品被提高。这些结果提供新奇卓见进单个层的瞬间 2 的 PL 改进。

关键词：臭氧氧化 mos2 单层荧光紫外改造低温光致发光二硫化钼

Li adsorption on monolayer and bilayer mos_2 as an ideal substrate for hydrogen storage

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Chinese Physics B 2018年第6期27卷 320-328页

作者：张诚唐少龙邓明森都有为 School of Physics and Electronic Science Guizhou Normal University Department of Physics Nanjing University Guizhou Provincial Key Laboratory of Computational Nano-material Science Guizhou Education University

Based on the first-principles plane wave calculations, we show that Li adsorbed on monolayer and bilayer mos2 forming a uniform and stable coverage can serve as a high-capacity hydrogen storage medium, and Li-coated mos2 can be recycled by operations at room temperature due to Li having strength binding, big separation and is stable against clustering. The full Li coverage mos2 system（2 ＊ 2 hexagonal mos2 supercell） can reach up to eight H2 molecules on every side, corresponding to the gravimetric density of hydrogen storage up to 4.8 wt% and 2.5 wt% in monolayer and bilayer mos2, respectively. The adsorption energies of hydrogen molecules are in the range of 0.10 e V/H2–0.25 e V/H2,which are acceptable for reversible H2 adsorption/desorption near ambient temperature. In addition, compared with light metals decorated low dimension carbon-based materials, the sandwiched structure of mos2 exhibits the greatly enhanced binding stability of Li atoms as well as slightly decreased Li-Li interaction and thus avoids the problem of metal clustering.It is interesting to note that the Li atom apart from the electrostatic interaction, acts as a bridge of hybridization between the S atoms of mos2 and adsorbed H2 molecules. The encouraging results show that such light metals decorated with mos2 have great potential in developing high performance hydrogen storage materials.

关键词： mos2 Li anchoring hydrogen storage first-principles