Chromium adsorption by aligned carbon nanotubes supported ceria nanoparticles

被引：229

作者：

Di, ZC ^{[1
]}

Ding, J

Peng, XJ

Li, YH

Luan, ZK

Liang, J

机构：

[1] Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China

[2] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China

来源：

CHEMOSPHERE | 2006年 / 62卷 / 05期

关键词：

aligned carbon nanotubes; Langmuir isotherm; Freundlich isotherm; electron microscopy; surface charge;

D O I：

10.1016/j.chemosphere.2004.06.044

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Ceria nanoparticles supported on aligned carbon nanotubes (CeO2/ACNTs), a novel adsorbent for Cr(VI) from drinking water, were prepared by chemical reaction of CeCl3 with NaOH in aligned carbon nanotube solution and subsequent heat treatment. The best Cr(VI) adsorption effect of CeO2/ACNTs Occurs at a pH range of 3.0-7.4. The largest adsorption capacity of CeO2/ACNTs reaches 30.2 mg g(-1) at an equilibrium Cr(VI) concentration of 35.3 mg l(-1) at pH 7.0. The experiment results suggest that CeO2/ACNTs have great potential applications in environmental protection. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：861 / 865

页数：5

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