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Acta Physico-Chimica Sinica  2009, Vol. 25 Issue (06): 1173-1178    DOI: 10.3866/PKU.WHXB20090614
Article     
Photoelectrocatalytic Performance of Arrayed Porous TiO2/Ti
LEI Jian-Fei, LI Wei-Shan
School of Chemistry and Environment, South China Normal University, Guangzhou 510006, P. R. China|Key Laboratory of Electrochemical Technology on Energy Storage and Power Generation in Guangdong Universities, Guangzhou 510006, P. R. China
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Abstract  

Arrayed porous titaniumdioxide loaded on titanium(TiO2/Ti) was fabricated using the sol-dipping method with polystyrene sphere (PS) arrays as a template. Its morphology and crystal phase composition were characterized by SEM and XRD, and its photoelectrocatalytic performance was studied using open-circuit potential curves, photocurrents with intermittent irradiation, degradation of methyl orange and hydrogen-evolution overpotential. Results show that arrayed porous TiO2/Ti has high catalytic activity because of the photoelectro-synergisitic effect. The degradation rate of methyl orange was 87.1% after reaction for 2.5 h and 97.9% after reaction for 5 h, and it has an apparent reaction rate constant of 0.77 h-1. The hydrogen-evolution overpotential on this material was reduced from -0.81 V to -0.68 V under ultraviolet irradiation.



Key wordsTitaniumdioxide      Porous array      Photoelectrocatalysis      Methyl orange degradation      Hydrogen evolution     
Received: 24 October 2008      Published: 03 April 2009
MSC2000:  O643  
  O644  
Corresponding Authors: LI Wei-Shan     E-mail: liwsh@scnu.edu.cn
Cite this article:

LEI Jian-Fei, LI Wei-Shan. Photoelectrocatalytic Performance of Arrayed Porous TiO2/Ti. Acta Physico-Chimica Sinica, 2009, 25(06): 1173-1178.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20090614     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2009/V25/I06/1173

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