Evaluation of bias potential enhanced photocatalytic degradation of 4-chlorophenol with TiO2 nanotube fabricated by anodic oxidation method
|dc.contributor.author||Li, Xin Yong|
|dc.identifier.citation||Wang, N. and Li, X.Y. and Wang, Y. and Quan, X. and Chen, G. 2009. Evaluation of bias potential enhanced photocatalytic degradation of 4-chlorophenol with TiO2 nanotube fabricated by anodic oxidation method. Chemical Engineering Journal. 146 (1): pp. 30-35.|
TiO2 nanotube was fabricated using anodic oxidation method. The samples were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD) and Brunauer-Emmett-Teller (BET). The obtained TiO2 nanotube exhibited increased photoelectrocatalytic (PEC) activities compared to TiO2 film for 4-chlorophenol (4-CP) degradation in aqueous solution. Comparing with electrochemical process (EP), direct photolysis (DP) and photocatalytic (PC), a significant PEC synergetic effect was observed. The factors influencing the degradation of 4-CP by the PEC process including bias potential, pH, initial concentration of 4-CP, UV light intensity and electrolyte concentration were examined. The results revealed that the bias potential played an important role in the degradation of 4-CP and the most efficient degradation of 4-CP was achieved in highly acidic and alkaline medium. Initial concentration of 4-CP was also a significant factor affecting the degradation of 4-CP. Moreover, the degradation rate increased with both UV light intensity and electrolyte concentration increasing. © 2008 Elsevier B.V. All rights reserved.
|dc.title||Evaluation of bias potential enhanced photocatalytic degradation of 4-chlorophenol with TiO2 nanotube fabricated by anodic oxidation method|
|dcterms.source.title||Chemical Engineering Journal|
|curtin.department||Department of Chemical Engineering|
|curtin.accessStatus||Fulltext not available|
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