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–de...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.展开更多
基金financially supported by the National Natural Science Foundation of China (Nos. J1103315 and J1310008)
文摘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.
