Degradation of benzene on Zr-doped TiO2 photocatalysts with a bimodal pore size distribution

Zr-doped TiO2 was prepared from TiOSO4 and ZrOCO3 by a co-precipitation method using NH3H2O as the precipitation agent. The Zr-doped TiO2 was characterized by X-ray diffraction（XRD）, low temperature N2adsorption–desorption measurement, and UV–Vis diffuse reflectance spectroscopy technology. Appropri...

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Bibliographic Details
Published in:Rare metals 2014-12, Vol.33 (6), p.714-722
Main Authors: Ren, Cheng-Jun, Wang, Guang-Ping, Chen, Yu-Chao, Chen, Yao-Qiang
Format: Article
Language:English
Subjects:
Biomaterials
Chemistry and Materials Science
Energy
Materials Engineering
Materials Science
Metallic Materials
Nanoscale Science and Technology
Physical Chemistry
TiO2光催化剂
ZrO2
双峰
大小分布
孔隙结构
掺杂
表面活性剂
降解
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Summary:Zr-doped TiO2 was prepared from TiOSO4 and ZrOCO3 by a co-precipitation method using NH3H2O as the precipitation agent. The Zr-doped TiO2 was characterized by X-ray diffraction（XRD）, low temperature N2adsorption–desorption measurement, and UV–Vis diffuse reflectance spectroscopy technology. Appropriate amounts of ZrO2 addition can greatly improve the TiO2 microstructure properties and its photocatalytic activities. In addition, polyethylene glycol（PEG） was used as a surfactant for templating the pore structure of samples. A bimodal pore structure can be controlled using PEG6000 and PEG20000 surfactants simultaneously during the preparation. The rate constant of benzene degradation over the Zr-doped TiO2 linearly decreases with the increase of photocatalytic reaction temperature and decreases in a polynomial relation with the benzene concentration.Moreover, it increases approximately linearly with the increase of the illumination intensity or area.
ISSN:1001-0521
1867-7185
DOI:10.1007/s12598-014-0326-z