Adsorption of 2,4,6-trichlorophenol by multi-walled carbon nanotubes as affected by Cu(II)
文献类型：期刊论文
| 作者 | Chen, Guang-Cai ; Shan, Xiao-Quan ; Wang, Yu-Sheng ; Wen, Bei ; Pei, Zhi-Guo ; Xie, Ya-Ning ; Liu, Tao ; Pignatello, Joseph J. |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2009-05 |
| 卷号 | 43期号:9页码:2409-2418 |
| 关键词 | 2 Cu(II) Multi-walled carbon nanotubes Adsorption 4 6-Trichlorophenol |
| 中文摘要 | 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. |
| WOS记录号 | WOS:000266468500008 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21452]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Chen, Guang-Cai,Shan, Xiao-Quan,Wang, Yu-Sheng,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, Guang-Cai.,Shan, Xiao-Quan.,Wang, Yu-Sheng.,Wen, Bei.,Pei, Zhi-Guo.,...&Pignatello, Joseph J..(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, Guang-Cai,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. |
入库方式： OAI收割
来源：生态环境研究中心
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