Surface characteristics of modified carbon nanotubes and its application in lead adsorption from aqueous solution

被引：9
|
作者：
Wang, SG
Li, YH
Gong, XY
Zhao, HZ
Luan, ZK
Xu, CL
Wu, DH
机构：
[1] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China
[2] Tsinghua Univ, State Key Lab Automot Safety & Energy, Dept Mech Engn, Beijing 100084, Peoples R China
来源：
CHINESE SCIENCE BULLETIN | 2003年 / 48卷 / 05期
关键词：
carbon nanotubes; oxidized modification; lead removal;
D O I：
10.1360/03tb9092
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Carbon nanotubes (CNT) were modified by nitric acid oxidation. Infrared spectroscopy (IR) demonstrated that hydroxyl (-OH) and carbonyl (-C=O) functional groups were introduced to the surface of modified CNT. Micrometrics ASAP 2000 measurement showed that the surface area of modified CNT was slightly increased. Furthermore, the Ph2+ adsorption behavior on the surface of modified CNT has been investigated. The results indicate that the modified CNT has an exceptional adsorption capability for Ph2+ removal. The adsorption isotherms are well described by the Langmuir equation under test temperatures and the kinetics level is three.
引用
收藏
页码：441 / 443
页数：3
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