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Synthesis of Pt-Ag alloy triangular nanoframes by galvanic replacement reactions followed by saturated NaCl treatment in an aqueous solution

机译:通过电流置换反应,然后在水溶液中进行饱和NaCl处理,合成Pt-Ag合金三角纳米框架

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摘要

Pt-Ag alloy triangular nanoframes were prepared by a galvanic replacement (CR) reaction of Ag nanoprisms with H_2PtCl_6 in an aqueous solution. Their growth mechanisms were studied by observing transmission electron microscopic (TEM) and TEM-energy dispersed X-ray spectroscopy (EDS) images and surface plasmon resonance (SPR) bands. Results show that triangular Pt-Ag alloy prisms are slowly formed 12-48 h after the addition of H_2PtCl_6. We found that after treatment using saturated NaCl solution is effective for the transformation of Ag-rich Pt-Ag alloy nanoprisms to Pt-rich Pt-Ag nanoframes.
机译:通过在水溶液中将Ag纳米棱镜与H_2PtCl_6进行电流置换(CR)反应,制备了Pt-Ag合金三角形纳米框架。通过观察透射电子显微镜(TEM)和TEM能量分散X射线光谱(EDS)图像和表面等离子体共振(SPR)谱带研究了它们的生长机理。结果表明,加入H_2PtCl_6后12-48 h缓慢形成了三角形Pt-Ag合金棱柱。我们发现,使用饱和NaCl溶液处理后对于将富Ag的Pt-Ag合金纳米棱镜转变为富Pt的Pt-Ag纳米框架是有效的。

著录项

  • 来源
    《Materials Letters》 |2014年第15期|113-117|共5页
  • 作者单位

    Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga 816-8580, Japan,Graduate School of Integrated Frontier Sciences, Kyushu University, Kasuga 816-8580, Japan,Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan;

    Department of Biological and Environmental Chemistry, School of Humanity-oriented Science and Technology, Kinki University, Iizuka 820-8555, Japan;

    Graduate School of Integrated Frontier Sciences, Kyushu University, Kasuga 816-8580, Japan;

    Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga 816-8580, Japan;

    Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga 816-8580, Japan,Graduate School of Engineering Sciences, Kyushu University, Kasuga 816-8580, Japan;

    Department of Biological and Environmental Chemistry, School of Humanity-oriented Science and Technology, Kinki University, Iizuka 820-8555, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Pt-Ag nanoframe; Ag nanoprism; Galvanic replacement reaction; Oxidative etching;

    机译:Pt-Ag纳米框架银纳米棱镜;电取代反应;氧化蚀刻;

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