中国科学技术大学学报 ›› 2013, Vol. 43 ›› Issue (11): 889-898.DOI: 10.3969/j.issn.0253-2778.2013.11.004

• 原创论文 • 上一篇    下一篇

以催化活性调控为导向的金属纳米结构可控合成

柏 彧   

  1. 中国科学技术大学化学与材料科学学院,合肥微尺度物质科学国家实验室,安徽合肥 230026
  • 收稿日期:2013-07-24 修回日期:2013-08-26 出版日期:2013-11-30 发布日期:2013-11-30
  • 通讯作者: 熊宇杰
  • 作者简介:柏彧,女,1989年生,博士生. 研究方向:金属纳米结构可控合成. E-mail: baiyu@mail.ustc.edu.cn
  • 基金资助:
    国家自然科学基金委青年基金(21101145),中央高校基本科研业务费专项资金(WK2060190025),国家“青年千人计划”和中国科学院“百人计划”资助.

Controlled synthesis of metal nanostructures for tunable catalytic activities

BAI Yu   

  1. School of Chemistry and Materials Science, and Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
  • Received:2013-07-24 Revised:2013-08-26 Online:2013-11-30 Published:2013-11-30

摘要: 概述了具有面心立方结构的金属纳米晶体的可控合成方法,阐述了合成过程中的关键控制参数。以课题组近年来的进展为例,重点讨论了金属纳米晶体的晶面调控方法.例如,通过表面修饰剂的选择,可以有选择性地获得具体不同低指数表面晶面的纳米晶体;通过晶体生长位点的活化,在晶种介导生长过程中可以形成具有高指数晶面的纳米晶体.由于表面晶面的种类决定了纳米晶体的表面原子排列方式,其调控赋予了材料在分子吸附与活化过程中的可控性,从而使得材料具有独特的催化性能.

关键词: 金属纳米晶体, 催化, 晶面, 电催化, 活性

Abstract: The methodology for controlled synthesis of metal nanocrystals with a face-centered cubic (fcc) structure was summarized, illustrating the key parameters for the shape control in the synthesis. Taking the recent progress in our research group as an example, the facet control of metal nanocrystals was demonstrated. For instance, nanocrystals with various low-index facets can be rationally synthesized by selecting appropriate capping agents; the formation of high-index facets can be achieved on the surface of nanocrystals by activating specific sites for atomic addition. As various surface facets possess different atomic arrangements, they exhibit tunable properties in molecular adsorption and activation, which allow us to tailor their performance in catalysis.

Key words: metal nanocrystal, catalysis, facet, electrocatalysis, activity