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首页> 外文期刊>ACS applied materials & interfaces >Electrons-Donating Derived Dual-Resistant Crust of VO2 Nano-Particles via Ascorbic Acid Treatment for Highly Stable Smart Windows Applications
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Electrons-Donating Derived Dual-Resistant Crust of VO2 Nano-Particles via Ascorbic Acid Treatment for Highly Stable Smart Windows Applications

机译：通过抗坏血酸处理来高稳定的智能窗应用，电子提供衍生的vo2纳米颗粒的双重抗性壳体

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摘要

Traditional vanadium dioxide (VO_(2)) material faced severe challenges of low stability in acid, humid, and oxygenic environments, which hinder its real applications. Here, we report a facile improving process which can enhanced the stability of VO_(2) nanocrystals in the environments above. Ascorbic acid (AA), as an important antioxidant for organism in medicine and biology, was ingeniously used for enhancing the antioxidation abilities of inorganic material. At the same time, the AA could generate the hydrogen doping occurred on the surface of VO_(2) nanocrystals, which enhanced their Antiacid abilities simultaneously. The AA treated VO_(2) nanocrystals retain stable in H_(2)SO_(4) and H_(2)O_(2) solution and exhibit high durability in hyperthermal (60 °C) and humid (90%) environment. Characterizations and first-principles theoretical calculations confirmed that the coordination of ascorbic acid molecules on VO_(2) nanocrystals induced charge-carrier density reorganization and protons transferring electrostatically. Then the formed H_(x )VO_(2) provides an enhancing formation energy for oxygen vacancy and protects the particles from corrosion. This work is beneficial to the VO_(2) nanoparticles coated and decorated processes and exhibit good potential for practical application of VO_(2)-based smart windows.
机译：传统的二氧化钒（VO_（2））材料面临酸，潮湿和含氧环境中低稳定性的严重挑战，这阻碍了其真实应用。在这里，我们报告了一种容易改进的过程，可以提高上述环境中VO_（2）纳米晶体的稳定性。作为医学和生物学生物的重要抗氧化剂（AA），巧妙地用于增强无机材料的抗氧化能力。同时，AA可以产生在VO_（2）纳米晶体表面上发生的氢掺杂，这同时增强了它们的抗腺型能力。 AA处理的VO_（2）纳米晶体在H_（2）SO_（4）和H_（2）O_（2）溶液中保持稳定，并在高温（60℃）和潮湿（90％）环境中表现出高耐久性。特征和第一原理理论计算证实，抗坏血酸分子对VO_（2）纳米晶体诱导的电荷 - 载体密度重组和质子静电转移的质子。然后形成的H _（ x）VO_（2）提供了增强的氧空位的形成能量，并保护颗粒免受腐蚀。这项工作有利于VO_（2）纳米颗粒涂层和装饰过程，并表现出VO_（2）的实际应用的良好潜力。基于智能窗口。

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  • 来源
    《ACS applied materials & interfaces》 |2019年第44期|共9页
  • 作者

    Yunxiang Chen; Zewei Shao; Yi Yang; Shuwen Zhao; Ying Tao; Heliang Yao; Hongjie Luo; Xun Cao; Ping Jin;

  • 作者单位

    State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences;

    State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences;

    CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering and Collaborative Innovation Center of Suzhou Nano Science and Technology University of Science and Technology of China;

    State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences;

    State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences;

    State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences;

    School of Materials Science and Engineering Shanghai University;

    State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences;

    State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学工业;
  • 关键词

    thermochromic; vanadium dioxide; ascorbic acid; H-doping; chemical stability; environmental durability;

    机译：热致变色;二氧化钒;抗坏血酸;H掺杂;化学稳定性;环境耐用性;

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