催化学报

催化学报 ›› 2010, Vol. 31 ›› Issue (11): 1307-1315.DOI: 10.1016/S1872-2067(10)60118-0

• 综述 •    下一篇

单分子层保护纳米 Au 粒子表面配位催化剂的制备及其应用

贾丽凤, 何涛, 李志鹏, 李雪梅   

  1. 南京工业大学材料化学工程国家重点实验室, 江苏南京 210009
  • 收稿日期:2010-04-02 出版日期:2010-11-12 发布日期:2014-03-28

Monolayer-Protected Gold Nanoparticle Surface-Bound Catalysts: Preparation and Application

JIA Lifeng, HE Tao*, LI Zhipeng, LI Xue-Mei*   

  1. State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, Jiangsu, China
  • Received:2010-04-02 Online:2010-11-12 Published:2014-03-28

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1286

被引次数

2

摘要： 贵金属纳米粒子由于其小尺寸效应而表现出特殊的催化性能. 综述了纳米 Au 粒子表面配位催化剂的制备方法及其在催化中的应用. 由于 Au 可与硫化物形成配位键, 所以硫化物可在 Au 表面形成有序单分子膜. 单分子膜保护的 Au 纳米粒子具有非常好的溶解性、分散性、稳定性, 以及由不同的表面功能团而导致的不同的催化性能. 该催化体系兼具均相催化剂和多相催化剂的特点, 这对开发新型催化剂具有重要的理论和实际意义.

关键词: Au 纳米粒子, 配位催化, 多相催化, 表面络合催化剂

Abstract: Precious metal nanomaterials have shown significantly different reactivity and catalytic activity because of their small-size effects. In this report, we focused on gold nanoparticle-based catalysts, especially gold nanoparticle surface-bound catalysts, their preparation and application. Because of its special surface properties, gold can form stable bonds with sulfur containing molecules including sulfides and thiols. These molecules form well ordered self-assembled monolayers on gold nanoparticles, which render monolayer-protected gold nanoparticles (MPGs) with good solubility, easy characterization, extraordinary stability, and versatility. With attached functional groups, we used MPGs as surface-bound catalysts. These catalysts show the combined characteristics of a homogeneous and a heterogeneous catalyst, which is critical for theoretical aspects and in the development of new types of surface-bound catalysts.

Key words: gold nanoparticle, coordination catalysis, heterogeneous catalysis, surface-bound catalyst