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首页> 外文期刊>Inorganic Chemistry Frontiers >Synthesis of a novel graphene- based gold nanocomposite using PVEIM- b- PNIPAM as a stabilizer and its thermosensitivity for the catalytic reduction of 4-nitrophenol
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Synthesis of a novel graphene- based gold nanocomposite using PVEIM- b- PNIPAM as a stabilizer and its thermosensitivity for the catalytic reduction of 4-nitrophenol

机译：用PVEIM-B-PNIPAM作为稳定剂的新型石墨烯的金纳米复合物合成及其热敏感性，催化还原4-硝基苯酚

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摘要

A cationic block copolymer of poly(1-vinyl-3-ethylimidazolium bromide) and poly(N-isopropylacrylamide), abbreviated as PVEIM-b-PNIPAM, is used as a thermo-switch and a stabilizer to fabricate a novel thermo-sensitive graphene-gold nanocomposite via electrostatic interactions, one-pot in situ growth, and chemical reduction. The morphology, chemical structure, and thermosensitivity of the nanocomposite are systematically characterized, which manifests that the PVEIM-b-PNIPAM stabilizer leads to uniformly distributed gold nanoparticles (GNPs) on the surface of reduced graphene oxide (RGO). The new nanocomposite has good dispersibility and high catalytic activity for the reduction of 4-nitrophenol. In addition, the phase transition of this nanocomposite can be reversibly modulated by temperature in water, which results in significantly different catalytic activities depending on the temperature. This thermo-sensitive nanocomposite may be applied as a thermo-switch material for heterogeneous catalysis, sensors, smart material devices etc.
机译：聚（1-乙烯基-3-乙基咪唑溴化物）和聚（N-异丙基丙烯酰胺）的阳离子嵌段共聚物缩小为PVEIM-B-PNIPAM，用作热开关和稳定剂以制造新的热敏石墨烯通过静电相互作用，原位生长，化学减少，纳米核化合物。系统地表征了纳米复合材料的形态，化学结构和热敏感性，这表明PVEIM-B-PNIPAM稳定剂导致均匀分布的石墨烯（RGO）表面上的均匀分布的金纳米颗粒（GNP）。新的纳米复合材料具有良好的分散性和高催化活性，用于还原4-硝基苯酚。另外，该纳米复合材料的相转变可以通过水中的温度可逆地调节，这取决于温度，导致显着不同的催化活性。该热敏纳米复合材料可以用作异质催化，传感器，智能材料装置等的热开关材料。

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  • 来源
    《Inorganic Chemistry Frontiers》 |2019年第4期|共11页
  • 作者

    Chen Shu; Xiang Yuanfang; Peng Chang; Xu Weijian; Banks M. Katherine; Wu Ruoxi;

  • 作者单位

    Hunan Univ Coll Chem &

    Chem Engn Changsha 410082 Hunan Peoples R China;

    Hunan Univ Coll Chem &

    Chem Engn Changsha 410082 Hunan Peoples R China;

    Hunan Univ Coll Chem &

    Chem Engn Changsha 410082 Hunan Peoples R China;

    Hunan Univ Coll Chem &

    Chem Engn Changsha 410082 Hunan Peoples R China;

    Texas A&

    M Univ Zachry Dept Civil Engn College Stn TX 77843 USA;

    Texas A&

    M Univ Zachry Dept Civil Engn College Stn TX 77843 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无机化学;
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