Fabrication of silica nanoparticles on the surface of functionalized multi-walled carbon nanotubes

被引：43
|
作者：
Zhou, Hongfu [1 ]
Zhang, Chen [1 ]
Li, Hangquan [1 ]
Du, Zhongjie [1 ]
机构：
[1] Beijing Univ Chem Technol, Minist Educ, Key Lab Carbon Fiber & Funct Polymers, Beijing 100029, Peoples R China
来源：
CARBON | 2011年 / 49卷 / 01期
关键词：
DECORATION; PARTICLES; ACID);
D O I：
10.1016/j.carbon.2010.08.051
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 method for the preparation of a hybrid material consisting of various size silica nanoparticles attached to multi walled carbon nanotubes (MWCNTs) is proposed Poly (acrylic acid) oligomer was first reacted with hydroxyl groups on acid-treated MWCNTs leading to a grafted encapsulation of the MWCNTs These were subsequently reacted with 3-aminopro pyltriethoxysilane (APTES) resulting sub grafting of APTES on the MWCNTs Such MWCNTs (siloxane-MWCNTs) were further hydrolyzed to make MWCNTs indirectly bearing Si-OH groups Finally a bud-like MWCNT/silica hybrid was obtained by forming a number of silica nanoparticles from Si-OH groups on the surface of MWCNTs by introducing siloxane-MWCNTs into a solution of tetraethyl orthosilicate, ammonia, and ethanol The average size of the silica nanoparticles on the surface of the MWCNTs could be controlled by adjusting the concentration of ammonia and the reaction time Crown Copyright (C) 2010 Published by Elsevier Ltd All rights reserved
引用
收藏
页码：126 / 132
页数：7
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