Development of a dispersion process for carbon nanotubes in ceramic matrix by heterocoagulation

被引：153
作者：
Sun, J [1 ]
Gao, L [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
来源：
CARBON | 2003年 / 41卷 / 05期
关键词：
carbon nanotubes; heat treatment; reactivity;
D O I：
10.1016/S0008-6223(02)00441-4
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：
The surface properties of carbon nanotubes have been changed by heat treatment with ammonia to yield a basic surface or with N-2 to yield an acidic surface without destroying the integrity of the nanotubes. The dispersion state of CNTs could be much improved by the adsorption of a cationic dispersant of poly(ethylenimine) (PEI) or an ionic dispersant of sodium dodecyl sulfate (SDS). Through the electrostatic interaction between components, CNTs could be successfully coated with particles of titania or alumina by colloidal heterocoagulation. A titania coating on 1.5wt% CNTs, shows the same photocatalytic properties in phenol degradation and has advantages in separation and reuse. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1063 / 1068
页数：6
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