Electrochemical removal of chromium from aqueous solutions using electrodes of stainless steel nets coated with single wall carbon nanotubes

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	Electrochemical removal of chromium from aqueous solutions using electrodes of stainless steel nets coated with single wall carbon nanotubes
	Liu, Y. X. ; Yuan, D. X. ; Yan, J. M. ; Li, Q. L. ; Ouyang, T. ; Yuan DX(袁东星)
刊名	http://dx.doi.org/10.1016/j.jhazmat.2010.11.025
	2011-02-15
关键词	COMPOSITE FILM ELECTRODES WASTE-WATER AEROGEL ELECTRODES HEXAVALENT CHROMIUM AGRICULTURAL WASTE ACTIVATED CARBONS ELECTROSORPTION CR(VI) ADSORPTION CLOTH
英文摘要	Guangdong-HK Technology Cooperation [08Lh-04]; An electrochemical technique was adopted to investigate the removal of Cr(VI) species and total chromium (TCr) from aqueous solution at a laboratory scale. The electrodes of stainless steel nets (SSNE) coated with single wall carbon nanotubes (SWCNTs@SSNE) were used as both anode and cathode. Three parameters, including solution pH, voltage and electrolyte concentration, were studied to explore the optimal condition of chromium removal. The optimal parameters were found to be pH 4, voltage 2.5V and electrolyte concentration 10 mg/L Under these conditions, the Cr(VI) and TCr removal had a high correlation with the amount of SWCNTs coated on the electrodes, with coefficients of the regression equations 0.953 and 0.928, respectively. The mechanism of Cr(VI) removal was also investigated. X-ray photoelectron spectroscopy (XPS) study and scanning electron microscope (SEM) picture showed that the process of chromium removal involved the reduction of Cr(VI) to Cr(III) on the cathode, and then the adsorption of Cr(III) by SWCNTs on the cathode. The study results indicated that the proposed method provided an interesting means to remove chromium species from aqueous solution, especially Cr(VI) in acidic condition. (c) 2010 Elsevier B.V. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/60752]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Liu, Y. X.,Yuan, D. X.,Yan, J. M.,et al. Electrochemical removal of chromium from aqueous solutions using electrodes of stainless steel nets coated with single wall carbon nanotubes[J]. http://dx.doi.org/10.1016/j.jhazmat.2010.11.025,2011.
APA	Liu, Y. X.,Yuan, D. X.,Yan, J. M.,Li, Q. L.,Ouyang, T.,&袁东星.(2011).Electrochemical removal of chromium from aqueous solutions using electrodes of stainless steel nets coated with single wall carbon nanotubes.http://dx.doi.org/10.1016/j.jhazmat.2010.11.025.
MLA	Liu, Y. X.,et al."Electrochemical removal of chromium from aqueous solutions using electrodes of stainless steel nets coated with single wall carbon nanotubes".http://dx.doi.org/10.1016/j.jhazmat.2010.11.025 (2011).