Comparative study of methylene blue dye adsorption onto activated carbon, graphene oxide, and carbon nanotubes

被引：745

作者：

Li, Yanhui ^{[1
]}

Du, Qiuju ^{[1
]}

Liu, Tonghao ^{[1
]}

Peng, Xianjia ^{[2
]}

Wang, Junjie ^{[1
]}

Sun, Jiankun ^{[1
]}

Wang, Yonghao ^{[1
]}

Wu, Shaoling ^{[1
]}

Wang, Zonghua ^{[1
]}

Xia, Yanzhi ^{[1
]}

Xia, Linhua ^{[1
]}

机构：

[1] Qingdao Univ, Coll Electromech Engn, Lab Fiber Mat & Modern Text, Growing Base State Key Lab, Qingdao 266071, Peoples R China

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

来源：

CHEMICAL ENGINEERING RESEARCH & DESIGN | 2013年 / 91卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Activated carbon; Graphene oxide; Carbon nanotubes; Adsorption; Dye; AQUEOUS-SOLUTION; WASTE-WATER; REMOVAL; ADSORBENT; ACID;

D O I：

10.1016/j.cherd.2012.07.007

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Three different carbonaceous materials, activated carbon, graphene oxide, and multi-walled carbon nanotubes, were modified by nitric acid and used as adsorbents for the removal of methylene blue dye from aqueous solution. The adsorbents were characterized by N-2 adsorption/desorption isotherms, infrared spectroscopy, particle size, and zeta potential measurements. Batch adsorption experiments were carried out to study the effect of solution pH and contact time on dye adsorption properties. The kinetic studies showed that the adsorption data followed a pseudo second-order kinetic model. The isotherm analysis indicated that the adsorption data can be represented by Langmuir isotherm model. The remarkably strong adsorption capacity normalized by the BET surface area of graphene oxide and carbon nanotubes can be attributed to pi-pi electron donor acceptor interaction and electrostatic attraction. (c) 2012 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：361 / 368

页数：8

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