Platinum nanoparticles from hydrosilylation reaction: Carbosilane dendrimer as capping agent

被引：11

作者：

Li, Chunfang ^{[1
,2
,3
]}

Li, Dongxiang ^{[3
]}

Zhao, Zhen-Sheng ^{[1
,2
]}

Duan, Xuan-Ming ^{[1
,2
]}

Hou, Wanguo ^{[3
]}

机构：

[1] Chinese Acad Sci, Tech Inst Phys & Chem, Lab Organ NanoPhoton, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R China

[3] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, State Key Lab Base Ecochem Engn, Qingdao 266042, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2010年 / 366卷 / 1-3期

关键词：

Platinum nanoparticles; Carbosilane dendrimer; Hydrosilylation reaction; POLY(AMIDOAMINE) DENDRIMERS; CLUSTERS; PARTICLES; CATALYST; METAL;

D O I：

10.1016/j.colsurfa.2010.05.013

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：

In this paper, platinum nanoparticles were prepared in the hydrosilylation reaction, in which carbosilane dendrimer was used as capping agent and stabilizer. UV-vis spectroscopy, X-ray photoelectron spectroscopy and transmission electron microscopy were employed to characterize the reaction system and the obtained Pt nanoparticles. The high SiH/Pt ratios could accelerate the formation of Pt nanoparticles in hydrosilylation reaction. When the hydrosilane was excess in the reaction, the formed Pt nanoparticles were first capped by hydrosilane molecules via Pt-Si bonds and then stabilized by dendrimers. While under the condition of excess olefin, the Pt nanoparticles were directly capped and stabilized by dendrimers via Pt-C bonds. The formed Pt nanoparticles had a good dispersibility with different size. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：45 / 49

页数：5

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