Thiol-functionalized silica colloids, grains, and membranes for irreversible adsorption of metal(oxide) nanoparticles

被引：47

作者：

Claesson, E. Maria ^{[1
]}

Philipse, Albert P. ^{[1
]}

机构：

[1] Univ Utrecht, Vant Hoff Lab Phys & Colloid Chem, Debye Inst, NL-3584 CH Utrecht, Netherlands

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2007年 / 297卷 / 1-3期

关键词：

gold particles; silica colloids; silica-metal composites; thiol-functionalization; polyethersulfone membranes;

D O I：

10.1016/j.colsurfa.2006.10.019

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：

Thiol-functionalization is described for silica surfaces from diverging origin, including commercial silica nanoparticles and Stober silica as well as silica structures provided by porous glasses and novel polymer-templated silica membranes. The functionalization allows in all cases for the irreversible binding of metal(oxide) particles from a solution. Examples are the adsorption of CoFe2O4 particles for the preparation of magnetizable silica colloids and silica structures, and gold nanoparticles that directly nucleate and grow on thiol-functionalized silica in a solution of HAuCl4 upon addition of a reducing agent. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：46 / 54

页数：9

共 28 条

[1] Colloidal gold aerogels: Preparation, properties, and characterization [J].