An efficient and reusable silica/dendrimer supported platinum catalyst for electron transfer reactions

被引：34

作者：

Li, Hongfang ^{[1
]}

Lue, Jian ^{[1
]}

Zheng, Zhaoliang ^{[1
]}

Cao, Rang ^{[1
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2011年 / 353卷 / 01期

关键词：

Pt nanoparticle; Stabilize; Catalyze; Electron transfer; MESOPOROUS SILICA; NANOPARTICLE SHAPE; COLLOIDAL SOLUTION; NANOCATALYSIS; COPOLYMER; OXIDATION; TRIBLOCK; IONS;

D O I：

10.1016/j.jcis.2010.09.047

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A series of Pt nanoparticles (NPs) smaller than 3 nm were successfully encapsulated in dendrimer/SBA-15 organic and inorganic hybrid composite. The obtained catalysts were characterized by XPS, XRD and TEM. The results of XPS and XRD indicate the existence of Pt NPs in the hybrid matrix. TEM images display the Pt NPs with narrow size distribution are monodispersed in SBA-15 channels. Catalytic property of the supported Pt catalysts was investigated in inorganic (ferricyanide to ferrocyanide by thiosulfate) and organic (p-nitrophenol to p-aminophenol by sodium borohydride) electron transfer (redox) reactions. In both cases, the reduction reactions followed smoothly and the catalysts showed excellent catalytic activity. Moreover, the catalysts can be easily separated and reused several times preserving good catalytic performance. (C) 2010 Elsevier Inc. All rights reserved.

引用

页码：149 / 155

页数：7

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