writer：Wei Liu, Xinlin Yang*, Wenqiang Huang
keywords：Carboxylic acid, Microsphere-stabilized gold metallic colloids, Mechanism for stabilization
source：期刊
specific source：J. Colloid Interface Sci., 304 (1), 160-165 (2006). DOI: 10.1016/j.jcis.2006.08.040
Issue time：2006年
Polymer-microsphere-stabilized gold metallic colloids have been prepared by a novel strategy of simple and convenient reduction of the metallic salt through the stabilization of the active carboxylic acid group on the gel and surface layer of the microsphere. The nature of the interaction between the carboxylic acid and Au nanoparticles was studied in detail by XPS. Preliminary results indicate that polymer-microsphere-stabilized gold colloids are active catalysts for the reduction of 4-nitrophenol to 4-aminophenol with sodium borohydride as reductant. The catalytic properties of the stabilized catalyst for recycling were also investigated.