Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/2403
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Title: Degradation of bisphenol A in aqueous solution by H₂O₂-assisted photoelectrocatalytic oxidation
Authors: Xie, YB
Li, XZ
Issue Date: 1-Dec-2006
Source: Journal of hazardous materials, 1 Dec. 2006, v. 138, no. 3, p. 526-533
Abstract: A series of titanium dioxide (TiO₂/Ti) film electrodes were prepared from titanium (Ti) metal mesh by an improved anodic oxidation process and were further modified by photochemically depositing gold (Au) on the TiO₂ film surface as Au–TiO₂/Ti film electrodes. The morphological characteristics, crystal structure and photoelectroreactivity of both the TiO2/Ti and Au–TiO₂/Ti electrodes were studied. The experiments confirmed that the gold modification of TiO₂ film could enhance the efficiency of e−/h+ separation on the TiO₂ conduction band and resulted in the higher photocatalytic (PC) and photoelectrocatalytic (PEC) activity under UV or visible illumination. To further enhance the TiO₂ PEC reaction, a reticulated vitreous carbon (RVC) electrode was applied in the same reaction system as the cathode to electrically generate H₂O₂ in the aqueous solution. The experiments demonstrated that such a H₂O₂-assisted TiO₂ PEC reaction system could achieve a much better performance of BPA degradation in aqueous solution due to an interactive effect among TiO₂, Au, and H₂O₂. It may have good potential for application in water and wastewater treatment in the future.
Keywords: Bisphenol A
H₂O₂
Photoelectrocatalysis
TiO₂
Publisher: Elsevier
Journal: Journal of hazardous materials 
ISSN: 0304-3894
EISSN: 1873-3336
DOI: 10.1016/j.jhazmat.2006.05.074
Rights: Journal of Hazardous Materials © 2006 Elsevier. The journal web site is located at http://www.sciencedirect.com.
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