Adsorption of 2,4,6-trichlorophenol by multi-walled carbon nanotubes as affected by Cu(II)

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	Adsorption of 2,4,6-trichlorophenol by multi-walled carbon nanotubes as affected by Cu(II)
	Chen, GC; Shan, XQ; Wang, YS; Wen, B; Pei, ZG; Xie, YN; Liu, T; Pignatello, JJ; Xie YN(谢亚宁); Liu T(刘涛)
刊名	WATER RESEARCH
	2009
卷号	43 期号:9 页码:2409-2418
关键词	2,4,6-Trichlorophenol Cu(II) Multi-walled carbon nanotubes Adsorption
通讯作者	[Chen, Guang-Cai ; Shan, Xiao-Quan ; Wang, Yu-Sheng ; Wen, Bei ; Pei, Zhi-Guo] Chinese Acad Sci, State Key Lab Environm Chem & Ecotoxicol, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China ; [Chen, Guang-Cai] Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang 311400, Zhejiang, Peoples R China ; [Xie, Ya-Ning ; Liu, Tao] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Lab, Beijing 100049, Peoples R China ; [Pignatello, Joseph J.] Connecticut Agr Expt Stn, Dept Soil & Water, New Haven, CT 06504 USA
英文摘要	Adsorption equilibrium of 2,4,6-trichlorophenol (TCP) on multi-walled carbon nanotubes (MWCNTs) was investigated to explore the possibility of using MWCNTs for concentration, detection and removal of TCP from contaminated water. The adsorption of TCP on MWCNTs at pH 4 was nonlinear, reversible and best fit by a Polanyi-Manes model. Oxidation treatment increased surface area and introduced hydrophilic carboxylic groups to the defect sites of MWCNTs, hence increased the sorption of TCP and Cu(II) individually. Cu(II) suppressed the sorption of TCP on oxidized MWCNTs15A, but had little effect on as-grown MWCNTs15. TCP had no influence on Cu(II) sorption to either. The mechanisms of Cu(II) suppression effect on TCP adsorption are ascribed to the formation of surface complexes of Cu(II), which was verified by X-ray absorption spectroscopy. Cu(II) exerts a cross-linking effect of functional groups on adjacent tubes, creating a more tightly knit bundle and suppressing the condensation of TCP in the pore spaces between the tubes. The large hydration sphere around surface complexes of Cu(II) may also intrude or shield hydrophilic sites, leading to the "crowding out" of TCP around the Cu(II)-complexed sites. (C) 2009 Elsevier Ltd. All rights reserved.
学科主题	Engineering; Environmental Sciences & Ecology; Water Resources
类目[WOS]	Engineering, Environmental ; Environmental Sciences ; Water Resources
研究领域[WOS]	Engineering ; Environmental Sciences & Ecology ; Water Resources
原文出处	SCI
语种	英语
WOS记录号	WOS:000266468500008
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/239742]
专题	高能物理研究所_粒子天体物理中心高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Chen, GC,Shan, XQ,Wang, YS,et al. Adsorption of 2,4,6-trichlorophenol by multi-walled carbon nanotubes as affected by Cu(II)[J]. WATER RESEARCH,2009,43(9):2409-2418.
APA	Chen, GC.,Shan, XQ.,Wang, YS.,Wen, B.,Pei, ZG.,...&刘涛.(2009).Adsorption of 2,4,6-trichlorophenol by multi-walled carbon nanotubes as affected by Cu(II).WATER RESEARCH,43(9),2409-2418.
MLA	Chen, GC,et al."Adsorption of 2,4,6-trichlorophenol by multi-walled carbon nanotubes as affected by Cu(II)".WATER RESEARCH 43.9(2009):2409-2418.