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One-pot synthesis of corolla-shaped gold nanostructures with (110) planes

机译:具有(110)平面的花冠形金纳米结构的单壶合成

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摘要

In this work, corolla-shaped gold nanostructures with (110) planes were successfully synthesized using ethylenediaminetetraacetic acid (EDTA) and polyvinylpyrrolidone (PVP) as the co-reductants and shape-directing agents. The structure and the mechanism of the nanostructures were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and electrochemical characterization. On the basis that surface energies of different gold crystallographic planes are in the order gamma(111) < gamma(100) < gamma(110), the (110) plane has the highest surface energy among the low-index planes. The gold nanocrystals with exposed high-energy planes are important in facilitating their potential applications such as highly efficient catalysts. This research is of great significance for the subsequent work on the synthesis of nanocrystals dominated by high-energy crystal planes.
机译:在这项工作中,使用乙二胺四乙酸(EDTA)和聚乙烯吡咯烷酮(PVP)作为共氧化铝和形状引导剂成功地合成了具有(110)架的花冠形金纳米结构。 通过扫描电子显微镜(SEM),透射电子显微镜(TEM),X射线衍射(XRD),X射线光电子能谱(XPS)和电化学表征来研究纳米结构的结构和机制。 在γ(111)<γ(100)<γ(110)中的不同金晶片平面的表面能处于γ(111),(110),在低指数平面中具有最高的表面能。 具有暴露的高能量平面的金纳米晶体在促进其潜在的应用如高效催化剂方面是重要的。 该研究对于随后的纳米晶体合成的工作具有重要意义,这是由高能水晶平面支配的纳米晶体的合成。

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  • 来源
    《RSC Advances》 |2020年第14期|共5页
  • 作者单位

    Northwest Univ Coll Chem &

    Mat Sci Shaanxi Key Lab Physicoinorgan Chem Key Lab Synthet &

    Nat Funct Mol Chem Minist Educ Xian 710069 Peoples R China;

    Xian Changfeng Res Inst Mech &

    Elect Xian 710065 Peoples R China;

    Northwest Univ Coll Chem &

    Mat Sci Shaanxi Key Lab Physicoinorgan Chem Key Lab Synthet &

    Nat Funct Mol Chem Minist Educ Xian 710069 Peoples R China;

    Northwest Univ Coll Chem &

    Mat Sci Shaanxi Key Lab Physicoinorgan Chem Key Lab Synthet &

    Nat Funct Mol Chem Minist Educ Xian 710069 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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