文献类型：期刊文献

英文题名：Adsorption kinetics, isotherms and thermodynamics of atrazine on surface oxidized multiwalled carbon nanotubes

作者：Chen, Guang-Cai[1,2] Shan, Xiao-Quan[1] Zhou, Yi-Quan[2] Shen, Xiu-e[1] Huang, Hong-Lin[1] Khan, Shahamat U.[3]

第一作者：Chen, Guang-Cai;陈光才

通信作者：Shan, XQ[1]

机构：[1]Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China;[2]Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang 311400, Zhejiang, Peoples R China;[3]George Mason Univ, Dept Chem & Biochem, Fairfax, VA 22030 USA

年份：2009

卷号：169

期号：1-3

起止页码：912-918

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20092912187203);Scopus(收录号：2-s2.0-67649961285);WOS:【SCI-EXPANDED(收录号:WOS:000268967200126)】；

基金：This work was funded by the National Natural Science Foundation of China (grant number: 20707037).

语种：英文

外文关键词：Adsorption; Atrazine; Carbon nanotubes; Kinetics; Thermodynamics

摘要：The adsorption kinetics, isotherms and thermodynamic of atrazine on multiwalled carbon nanotubes (MWCNTs) containing 0.85%, 2.16%, and 7.07% oxygen was studied. Kinetic analyses were performed using pseudo-first-order, pseudo-second-order and intraparticle diffusion models. The regression results showed that the pseudo-second-order law fit the adsorption kinetics. The calculated thermodynamic parameters indicated that adsorption of atrazine on MWCNTs was spontaneous and exothermic. Standard free energy (Delta G(0)) became less negative when the oxygen content of MWCNTs increased from 0.85% to 7.07% which is consistent with the low adsorption affinity of MWCNTs for atrazine. (c) 2009 Elsevier B.V. All rights reserved.