Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/2452
Title: Photoelectrocatalytic oxidation of rhodamine B in aqueous solution using Ti/TiO?mesh photoelectrodes
Authors: Li, XZ
Liu, HL
Li, FB
Mak, CL 
Keywords: Titanium mesh
Anodization
Titanium dioxide
Photoelectrocatalytic oxidation
Rhodamine B
Issue Date: Jan-2002
Publisher: Marcel Dekker, Inc.
Source: Journal of environmental science and health. Part A, Jan. 2002, v. 37. no. 1, p. 55-69 How to cite?
Journal: Journal of environmental science and health, Part A 
Abstract: To further improve the photooxidation techniques for water and wastewater purification, a Ti/TiO?mesh electrode, was successfully prepared by anodizing Ti mesh in 0.5M H?SO4 solution. The structural and surface morphology of the Ti/TiO?electrode was examined by Raman spectroscopy and scanning electronic microscopy (SEM) respectively. The examination results indicated that its structure and properties were affected by its growth rate in the anodization process, and anatase TiO?was dominant in its composition. The photocatalytic (PC) oxidation and photoelectrocatalytic (PEC) oxidation of rhodamine B in aqueous solution using the Ti/TiO?electrode were investigated and compared. The experimental results demonstrated that the PEC oxidation by applying an electrical bias between the Ti/TiO?electrode and Pt electrode could significantly enhance the degradation rate of rhodamine B compared with the PC oxidation. It was found that the best performance of PEC oxidation was achieved by applying the electrical bias of 0.6 V. The mechanism of rhodamine B degradation in the PEC process was discussed by studying the changes of absorbance spectrum and proton nuclear magnetic resonance spectroscopy of rhodamine B during the PEC degradation. The experimental results illustrated that both de-ethylation and chromogen destruction of rhodamine B under UV-light irradiation in the PEC degradation took place simultaneously.
URI: http://hdl.handle.net/10397/2452
ISSN: 1093-4529 (print)
1532-4117 (online)
DOI: 10.1081/ESE-100108482
Rights: ? 2002 Marcel Dekker, Inc. This is an electronic version of an article published in Li, x. Z., Liu, H. L., Li, F. B. and Mak, C. L. (2002), Journal of Environmental Science and Health, Part A, 37: 1, 55-69. Journal of Environmental Science and Health is available online at http://www.informaworld.com, the open URL of the article: http://www.informaworld.com/smpp/content~db=all~content=a713629854~frm=titlelink
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