The removal of U(VI) from aqueous solution by oxidized multiwalled carbon nanotubes

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	The removal of U(VI) from aqueous solution by oxidized multiwalled carbon nanotubes
	Sun, YB ; Yang, ST ; Sheng, GD ; Guo, ZQ ; Wang, XK
刊名	journal of environmental radioactivity
	2012
中文摘要	multiwalled carbon nanotubes (mwcnts) have exhibited high sorption capacity for radionuclides due to the unique hollow structure and large surface area. in this study, surface properties of oxidized mwcnts were characterized by using xrd, sem, ftir and potentiometric acid-base titration. the sorption of u(vi) on oxidized mwcnts as a function of contact time, u(vi) concentration, ph, ionic strength, humic acid/fulvic acid (ha/fa) and carbonate was investigated by using batch technique. the removal of u(vi) by oxidized mwcnts was strongly dependent on ph and ionic strength. the presence of ha/fa enhanced u(vi) removal on oxidized mwcnts at low ph while inhibited u(vi) sorption at high ph. the mechanism of u(vi) sorption on oxidized mwcnts was assumed to be cation exchange/outer-sphere surface complexation in acidic ph and to form precipitation under circum neutral conditions. the oxidized mwcnts exhibit higher sorption capacity and stronger chemical affinity than pristine mwcnts. crown copyright (c) 2011 published by elsevier ltd. all rights reserved.
学科主题	等离子体物理与核聚变研究
WOS记录号	WOS:000300815000006
公开日期	2012-07-09
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn/handle/334002/5742]
专题	合肥物质科学研究院_中科院等离子体物理研究所
推荐引用方式 GB/T 7714	Sun, YB,Yang, ST,Sheng, GD,et al. The removal of U(VI) from aqueous solution by oxidized multiwalled carbon nanotubes[J]. journal of environmental radioactivity,2012.
APA	Sun, YB,Yang, ST,Sheng, GD,Guo, ZQ,&Wang, XK.(2012).The removal of U(VI) from aqueous solution by oxidized multiwalled carbon nanotubes.journal of environmental radioactivity.
MLA	Sun, YB,et al."The removal of U(VI) from aqueous solution by oxidized multiwalled carbon nanotubes".journal of environmental radioactivity (2012).