Removal of carbon nanotubes from aqueous environment with filter paper

doi:10.1016/j.chemosphere.2010.10.048

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	Removal of carbon nanotubes from aqueous environment with filter paper
	Yang, Sheng-Tao 1,2; Wang, Haifang 1; Wang, Yunxia 1; Wang, Yanwen 1; Nie, Haiyu 1,2; Liu, Yuanfang 1,2
刊名	CHEMOSPHERE
	2011
卷号	82 期号:4 页码:621-626
关键词	Carbon Nanotubes Calcium Ions Aggregation Decontamination
ISSN号	0045-6535
DOI	10.1016/j.chemosphere.2010.10.048
英文摘要	The potential health and environmental hazards of carbon nanotubes (CNTs) have been a concerned issue. However, in contrast to the wide recognition of the toxicity of CNTs, little attention has been paid to the decontamination/remediation of CNT pollution. In this study, we report that CNTs can be removed from aqueous environment. In the presence of Ca(2+). CNTs aggregate quickly to micron size and then enable easy and effective removal via normal filtration. After filtration, CNT suspension becomes colorless with the remnant CNT concentration less than 0.5 mu g mL(-1), a safe dose based on the published data. The filtration approach also works well in the presence of typical surfactant and dissolved organic matter. The removal efficiency is Ca(2+) concentration-dependent and regulated by the initial pH value and ionic strength. Our study is helpful for future decontamination of CNTs from aqueous environment. (C) 2010 Elsevier Ltd. All rights reserved.
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000286788300021
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/73871]
专题	中国科学院化学研究所
通讯作者	Wang, Haifang
作者单位	1.Shanghai Univ, Inst Nanochem & Nanobiol, Shanghai 200444, Peoples R China 2.Peking Univ, Beijing Natl Lab Mol Sci, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Yang, Sheng-Tao,Wang, Haifang,Wang, Yunxia,et al. Removal of carbon nanotubes from aqueous environment with filter paper[J]. CHEMOSPHERE,2011,82(4):621-626.
APA	Yang, Sheng-Tao,Wang, Haifang,Wang, Yunxia,Wang, Yanwen,Nie, Haiyu,&Liu, Yuanfang.(2011).Removal of carbon nanotubes from aqueous environment with filter paper.CHEMOSPHERE,82(4),621-626.
MLA	Yang, Sheng-Tao,et al."Removal of carbon nanotubes from aqueous environment with filter paper".CHEMOSPHERE 82.4(2011):621-626.