Efficient photoelectrocatalytic reduction of Cr(VI) using TiO2 nanotube   arrays as the photoanode and a large-area titanium mesh as the   photocathode

doi:10.1016/j.molcata.2010.11.040

CORC > 北京大学 > 环境科学与工程学院

	Efficient photoelectrocatalytic reduction of Cr(VI) using TiO2 nanotube arrays as the photoanode and a large-area titanium mesh as the photocathode
	Wang, Qing ; Shang, Jing ; Zhu, Tong ; Zhao, Fengwei
刊名	journal of molecular catalysis a chemical
	2011
关键词	Photoelectrocatalysis Cr(VI) TiO2 nanotubes Photocathode area Reduction HETEROGENEOUS PHOTOCATALYTIC REDUCTION HEXAVALENT CHROMIUM AQUEOUS-SOLUTION DEGRADATION OXIDATION WATER DYE SPECTROSCOPY SUSPENSIONS FABRICATION
DOI	10.1016/j.molcata.2010.11.040
英文摘要	We report the efficient photoelectrocatalytic (PEC) reduction of Cr(VI) using TiO2 nanotubes (TNTs) as the photoanode and a large-area Ti mesh as the photocathode. Short-length TNTs (S-TNTs) show much greater PEC activity than either long-length TNTs (L-TNTs) or sol-gel-prepared TiO2 film, due to the fact that the TNT structure is advantageous of trapping light energy over the thin-film structure and the S-TNTs enable the more efficient electron transfer into the substrate than L-TNTs. More importantly, increasing the surface area of the photocathode (Ti mesh) can greatly accelerate the PEC reduction of Cr(VI), presumably due to the increased number of the active reduction sites on the larger-surface Ti mesh. In the PEC reduction of Cr(VI), Cr(V) is identified as a reaction intermediate using the electroparamagnetic resonance technique, whereby the process for the Cr(VI) evolution is proposed. The S-TNTs have been confirmed to be stable over many repetitive cycles of use, indicating their suitability for wide-scale use. (C) 2010 Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000287058900033&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Physical; SCI(E); EI; 23; ARTICLE; 1-2; 242-247; 335
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/158468]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Wang, Qing,Shang, Jing,Zhu, Tong,et al. Efficient photoelectrocatalytic reduction of Cr(VI) using TiO2 nanotube arrays as the photoanode and a large-area titanium mesh as the photocathode[J]. journal of molecular catalysis a chemical,2011.
APA	Wang, Qing,Shang, Jing,Zhu, Tong,&Zhao, Fengwei.(2011).Efficient photoelectrocatalytic reduction of Cr(VI) using TiO2 nanotube arrays as the photoanode and a large-area titanium mesh as the photocathode.journal of molecular catalysis a chemical.
MLA	Wang, Qing,et al."Efficient photoelectrocatalytic reduction of Cr(VI) using TiO2 nanotube arrays as the photoanode and a large-area titanium mesh as the photocathode".journal of molecular catalysis a chemical (2011).