Preparation and characterization of highly dispersed gold nanoparticles within channels of mesoporous silica

被引：18
|
作者：
Chao, KJ [1 ]
Cheng, MH [1 ]
Ho, YF [1 ]
Liu, PH [1 ]
机构：
[1] Natl Tsing Hua Univ, Dept Chem, Hsinchu 300, Taiwan
来源：
CATALYSIS TODAY | 2004年 / 97卷 / 01期
关键词：
gold catalyst; mesoporous silica; XAS;
D O I：
10.1016/j.cattod.2004.03.062
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The preparation of highly dispersed gold nanoparticles in mesoporous silica SBA-15 is monitored by in situ XAS measurement. The silanation of intrachannel surface with TPTAC can generate ion-exchange sites for anionic Au(OH)(n)Cl-4-n(-) (with n = 0-4) complex ions and help to produce uniformly dispersed gold nanoparticles in the host channels after further reduction. The average size of metal nanoparticles is dependent on the pH value of gold precursor solution. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：49 / 53
页数：5
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