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Citation: Ding Zheng-Xin, Hou Yi-Dong, Li Dan-Zhen, Wang Xu-Xu, Fu Xian-Zhi, Liu Ping. Effect of Morphological Structure and Photoelectric Properties on Photocatalytic Performance of TiO₂[J]. Acta Physico-Chimica Sinica, ;2003, 19(10): 978-981. doi: 10.3866/PKU.WHXB20031020 shu

Effect of Morphological Structure and Photoelectric Properties on Photocatalytic Performance of TiO₂

1.
Research Institute of Photocatalysis, Fuzhou University, Fuzhou　350002

Received Date: 14 April 2003
Available Online: 15 October 2003

TiO2 photocatalysts prepared by sol-gel method were characterized by X-ray diffraction (XRD), UV diffuse reflectance spectroscopy (DRS), N2 adsorption BET method, surface photovoltage spectroscopy (SPS). A test compound ethylene in the gas phase was employed in the heterogeneous photocatalytic oxidation to investigate the effects of properties of TiO2 nanoparticles on photocatalytic performance. The results showed that crystal size of TiO2 increased slowly and its surface area downgraded with the increasing of calcination temperature; the crystal phase of TiO2 changed from anatase to rutile, the threshold of SPS decreased and the band edge red-shifted to yield smaller redox potential, leading to the significantly decreased of photocatalytic activity.
- Photocatalysis;Titanium dioxide;Nanocrystalline;Surface photovoltage spectroscopy
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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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Effect of Morphological Structure and Photoelectric Properties on Photocatalytic Performance of TiO2

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通讯作者: 陈斌, bchen63@163.com

Effect of Morphological Structure and Photoelectric Properties on Photocatalytic Performance of TiO₂