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首页> 外文期刊>Journal of Crystal Growth >Application of a conproportionation reaction to a synthesis of shape-controlled gold nanoparticles
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Application of a conproportionation reaction to a synthesis of shape-controlled gold nanoparticles

机译：配位反应在形状控制金纳米颗粒合成中的应用

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摘要

Synthesis of gold nanoparticles with multiple shapes by a modified seeding growth method is reported. The optical extinction spectra of a mixture of the seed and growth solutions indicate that the seed particle size decreases during stirring the mixture by a conproportionation reaction of Au metal with Au(III) ions. This conproportionation reaction is used to investigate the effects of variation in seed particle size on the resultant gold nanoparticle shape. When single crystalline and multiply twinned particles are used as the seed particles, they grow into gold nanorods and nanobipyramids, respectively. By letting the seed particles experience the conproportionation reaction before the particle growth to decrease the size, the surface of resultant nanoparticles roughens. Increasing the conproportionation reaction time up to 5 min, multi-branched gold nanoparticles with many lattice defects grow from both of the seed particles. This indicates that the conproportionation reaction is useful to generate lattice defects during the particle growth, which lead to the formation of gold nanoparticles with complex shapes.
机译：报道了通过改良的晶种生长方法合成具有多种形状的金纳米颗粒。种子和生长溶液的混合物的光学消光光谱表明，在搅拌混合物期间，通过Au金属与Au（III）离子的配位反应，种子粒径减小。该比例反应用于研究种子粒径变化对所得金纳米粒子形状的影响。当单晶和多重孪晶颗粒用作种子颗粒时，它们分别长成金纳米棒和纳米双金字塔。通过使种子颗粒在颗粒生长之前经历共混反应以减小尺寸，所得纳米颗粒的表面变粗糙。将配位反应时间延长至5分钟，会从两个种子颗粒中生长出具有许多晶格缺陷的多支金纳米颗粒。这表明共混反应可用于在颗粒生长过程中产生晶格缺陷，从而导致形成形状复杂的金纳米颗粒。

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  • 来源
    《Journal of Crystal Growth》 |2009年第19期|4462-4466|共5页
  • 作者

    G. Kawamura; M. Nogami;

  • 作者单位

    Department of Materials Science and Engineering, Nagoya Institute of Technology, Showa, Nagoya 466-8555, Japan;

    Department of Materials Science and Engineering, Nagoya Institute of Technology, Showa, Nagoya 466-8555, 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

    A1. defects; A2. growth form solutions; B1. metals; B1. nanomaterials;

    机译：A1。缺陷A2。成长形式解决方案;B1。金属;B1。纳米材料;

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