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Citation: LEI Jian-Fei, LI Wei-Shan. Photoelectrocatalytic Performance of Arrayed Porous TiO₂/Ti[J]. Acta Physico-Chimica Sinica, ;2009, 25(06): 1173-1178. doi: 10.3866/PKU.WHXB20090614 shu

Photoelectrocatalytic Performance of Arrayed Porous TiO₂/Ti

1.
School of Chemistry and Environment, South China Normal University, Guangzhou 510006, P. R. China

Received Date: 24 October 2008
Available Online: 3 April 2009

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.
- Titaniumdioxide,
- Porous array,
- Photoelectrocatalysis,
- Methyl orange degradation,
- Hydrogen evolution
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沈阳化工大学材料科学与工程学院沈阳 110142

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通讯作者: 陈斌, bchen63@163.com

Photoelectrocatalytic Performance of Arrayed Porous TiO₂/Ti