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Unconventional synthesis of Cu-Au dendritic nanowires with enhanced electrochemical activity

机译:具有增强电化学活性Cu-Au树突纳米线的非常规合成

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摘要

Cu-Au dendritic nanowires (NWs) were synthesized by heating pre-synthesized Cu NWs and Au ultrathin NWs in a THF/H2O mixture. The obtained dendritic NWs were composed of a Cu/CuO stem and distributed by Au multi-branches throughout the whole structure. The formation of a dendritic structure was initiated from oxidation of Cu to CuO during the phase transition stage, giving an anisotropic dendritic precursor. Then a galvanic replacement reaction between Cu and Au ions created abundant anchor sites, facilitating Au branch formation via self-deformation of ultrathin Au NWs around the Cu NWs surface. The synthesized Cu-Au dendritic NWs could be potentially used as biosensors in detecting glucose for its high sensitivity and excellent performances, due to the demonstration of their enhanced electrochemical activity for oxidation of glucose.
机译:通过在THF / H 2 O混合物中加热预合成的Cu NWS和Au超薄Nws来合成Cu-Au树枝状纳米线(NWS)。 所获得的树突NWS由Cu / CuO茎组成,并通过整个结构的Au多分支分布。 在相转移阶段在Cu至CuO的氧化中引发树枝状结构的形成,得到各向异性树突前体。 然后Cu和Au离子之间的电常置置换反应产生丰富的锚位点,促进Au分支形成通过围绕Cu NWS表面的超薄Au nWs的自变形。 由于其增强的电化学活性用于氧化葡萄糖的氧化的电化学活性,可以将合成的Cu-Au树突状NWS潜在用作检测葡萄糖的生物传感器,以检测其高灵敏度和优异的性能。

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  • 来源
    《RSC Advances》 |2016年第3期|共6页
  • 作者单位

    Xiamen Univ Dept Biomat Xiamen 361005 Peoples R China;

    Xiamen Univ Dept Biomat Xiamen 361005 Peoples R China;

    Xiamen Univ Dept Biomat Xiamen 361005 Peoples R China;

    Xiamen Univ Dept Biomat Xiamen 361005 Peoples R China;

    Xiamen Univ Dept Biomat Xiamen 361005 Peoples R China;

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

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