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Insight to ternary complexes of co-adsorption of norfloxacin and Cu(II) onto montmorillonite at different pH using EXAFS
Pei, ZG; Shan, XQ; Zhang, SZ; Kong, JJ; Wen, B; Zhang, J; Zheng, LR; Xie, YN; Janssens, K; Zhang J(张静); Zheng LR(郑黎荣); Xie YN(谢亚宁)
2011
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
Volume186Issue:1Pages:842-848
Corresponding Author[Pei, Zhi-Guo ; Shan, Xiao-Quan ; Zhang, Shu-Zhen ; Kong, Jing-Jing ; Wen, Bei] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China ; [Kong, Jing-Jing] Fujian Normal Univ, Sch Chem & Mat, Fuzhou 350007, Peoples R China ; [Zhang, Jing ; Zheng, Li-Rong ; Xie, Ya-Ning] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Lab, Beijing 100049, Peoples R China ; [Janssens, Koen] Univ Antwerp, Dept Chem, Ctr Micro & Trace Anal, B-2610 Antwerp, Belgium
SubtypeArticle
AbstractCo-adsorption of norfloxacin (Nor) and Cu(II) on montmorillonite at pH 4.5, 7.0 and 9.0 was studied by integrated batch adsorption experiments and extended X-ray absorption fine structure (EXAFS) spectroscopy. Under such pH conditions the dominant species of Nor are cation (Nor(+)), zwitterion (Nor(+/-)), and anion (Nor(-)), respectively. Results indicated that Nor sorption decreased with an increase of solution pH. The presence of Cu(II) slightly suppressed the Nor(+) sorption at pH 4.5, while increased Nor(+/-) and Nor(-)sorption on montmorillonite at pH 7.0 and 9.0, respectively. In contrast, Nor increased Cu(II) adsorption at pH 4.5, but had little effect on the adsorption of Cu(II) on montmorillonite at pH 7.0 and 9.0. Spectroscopic results showed that, at pH 4.5, Nor(+) was sorbed on montmorillonite by the formation of outer-sphere montmorillonite-Nor-Cu(II) ternary surface complex. At pH 7.0, montmorillonite-Nor-Cu(II) and montmorillonite-Cu(II)-Nor ternary surface complexes co-exist. At pH 9.0, montmorillonite-Cu(II)-Nor ternary surface complex was likely formed, which was different to Cu(II)(Nor)(2) precipitate of the solution. (C) 2010 Elsevier B.V. All rights reserved.
KeywordSorption Copper Norfloxacin EXAFS Montmorillonite
Subject AreaEngineering; Environmental Sciences & Ecology
DOI10.1016/j.jhazmat.2010.11.076
URL查看原文
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Engineering, Civil ; Environmental Sciences
WOS IDWOS:000288102400107
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Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/238587
Collection多学科研究中心
实验物理中心
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Pei, ZG,Shan, XQ,Zhang, SZ,et al. Insight to ternary complexes of co-adsorption of norfloxacin and Cu(II) onto montmorillonite at different pH using EXAFS[J]. JOURNAL OF HAZARDOUS MATERIALS,2011,186(1):842-848.
APA Pei, ZG.,Shan, XQ.,Zhang, SZ.,Kong, JJ.,Wen, B.,...&谢亚宁.(2011).Insight to ternary complexes of co-adsorption of norfloxacin and Cu(II) onto montmorillonite at different pH using EXAFS.JOURNAL OF HAZARDOUS MATERIALS,186(1),842-848.
MLA Pei, ZG,et al."Insight to ternary complexes of co-adsorption of norfloxacin and Cu(II) onto montmorillonite at different pH using EXAFS".JOURNAL OF HAZARDOUS MATERIALS 186.1(2011):842-848.
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