引用本文:
文晨, 赵莹, 张蕊, 焦俊. La掺杂对活性炭负载TiO2催化剂光催化活性的影响[J]. 应用化学,
2006, 23(7): 734-738.
Citation: WEN Chen, ZHAO Ying, ZHANG Rui, JIAO Jun. Effect of La-Doping on the Photocatalytic Activity of Active Carbon Supported TiO2 Catalysts[J]. Chinese Journal of Applied Chemistry, 2006, 23(7): 734-738.
Citation: WEN Chen, ZHAO Ying, ZHANG Rui, JIAO Jun. Effect of La-Doping on the Photocatalytic Activity of Active Carbon Supported TiO2 Catalysts[J]. Chinese Journal of Applied Chemistry, 2006, 23(7): 734-738.
La掺杂对活性炭负载TiO2催化剂光催化活性的影响
English
Effect of La-Doping on the Photocatalytic Activity of Active Carbon Supported TiO2 Catalysts
Abstract:
The pure and La-doped TiO2/AC catalysts were prepared on the surface of active carbon(AC) via the sol-gel method with tetrabutylorthotitanat and lanthanum nitrate as source materials.The crystalline structures and morphologies were characterized by means of XRD,UV-Vis and SEM.The effects of calcining temperature and La content on the properties and the photocatalytic activity of TiO2/AC catalysts for the degradation of methylene blue have been carefully investigated.The results show that La dopant not only greatly inhibits TiO2 crystal phase transformation from anatase to rutile,but also makes the optic response range of TiO2 particle expand to visible light.It was found that the degradation rate of methylene blue reached 87% when the molar fraction of La in TiO2 was 0.30% and the irradiation time was 120 min.
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