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首页> 外文期刊>Advanced Functional Materials >Large-Scale Synthesis of Long Crystalline Cu_(2-x)Se Nanowire Bundles by Water-Evaporation-Induced Self- Assembly and Their Application in Gas Sensing
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Large-Scale Synthesis of Long Crystalline Cu_(2-x)Se Nanowire Bundles by Water-Evaporation-Induced Self- Assembly and Their Application in Gas Sensing

机译：水蒸发诱导自组装大规模合成长晶Cu_（2-x）Se纳米线束及其在气敏中的应用

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摘要

By a facile water evaporation process without adding any directing agent, Cu_(2-x)Se nanowire bundles with diameters of 100-300 nm and lengths up to hundreds of micrometers, which comprise crystalline nanowires with diameters of 5-8 nm, are obtained. Experiments reveal the initial formation/ stacking of CuSe nanoplates and the subsequent transformation to the Cu_(2-x)Se nanowire bundles. A water-evaporation-induced self-assembly (WEISA) mechanism is proposed, which highlights the driving force of evaporation in promoting the nanoplate stacking, CuSe-to-Cu_(2-x)Se transformation and the growth/bundling of the Cu_(2-x)Se nanowires. The simplicity, benignancy, scalability, and high-yield of the synthesis of this important nanowire material herald its numerous applications. As one example, the use of the Cu_(2-x)Se nanowire bundles as a photoluminescence-type sensor of humidity is demonstrated, which shows good sensitivity, ideal linearity, quick response/recovery and long lifetime in a very wide humidity range at room temperature.
机译：通过不添加任何定向剂的简便的水蒸发过程，获得了直径为100-300 nm，长度高达数百微米的Cu_（2-x）Se纳米线束，其中包含直径为5-8 nm的晶体纳米线。 。实验揭示了CuSe纳米板的初始形成/堆叠以及随后的Cu_（2-x）Se纳米线束的转化。提出了一种水蒸发诱导的自组装（WEISA）机制，该机制突出了蒸发的驱动力在促进纳米板堆叠，CuSe到Cu_（2-x）Se的转化以及Cu_（ 2-x）Se纳米线。这种重要的纳米线材料合成的简单性，良性，可扩展性和高产率预示了其众多应用。作为一个示例，展示了使用Cu_（2-x）Se纳米线束作为光致发光型湿度传感器，该传感器在非常宽的湿度范围内显示出良好的灵敏度，理想的线性度，快速的响应/恢复性以及较长的使用寿命。室内温度。

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  • 来源
    《Advanced Functional Materials》 |2009年第11期|1759-1766|共8页
  • 作者

    Jun Xu; Weixin Zhang; Zeheng Yang; Shaixia Ding; Chunyan Zeng; Lingling Chen; Qiang Wang; Shihe Yang;

  • 作者单位

    Anhui Key Laboratory of Controllable Chemical Reaction &. Material Chemical Engineering School of Chemical Engineering Hefei University of Technology Hefei, Anhui 230009, P.R. China;

    Anhui Key Laboratory of Controllable Chemical Reaction &. Material Chemical Engineering School of Chemical Engineering Hefei University of Technology Hefei, Anhui 230009, P.R. China;

    Anhui Key Laboratory of Controllable Chemical Reaction &. Material Chemical Engineering School of Chemical Engineering Hefei University of Technology Hefei, Anhui 230009, P.R. China;

    Anhui Key Laboratory of Controllable Chemical Reaction &. Material Chemical Engineering School of Chemical Engineering Hefei University of Technology Hefei, Anhui 230009, P.R. China;

    Anhui Key Laboratory of Controllable Chemical Reaction &. Material Chemical Engineering School of Chemical Engineering Hefei University of Technology Hefei, Anhui 230009, P.R. China;

    Anhui Key Laboratory of Controllable Chemical Reaction &. Material Chemical Engineering School of Chemical Engineering Hefei University of Technology Hefei, Anhui 230009, P.R. China;

    Anhui Key Laboratory of Controllable Chemical Reaction &. Material Chemical Engineering School of Chemical Engineering Hefei University of Technology Hefei, Anhui 230009, P.R. China;

    Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay, Kowloon, Hong Kong;

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