Preparation and performance research of Ce-TiO₂/KL ball photocatalysts

于晓娟¹，熊领领¹，马国平²，梁愿¹，刘奎仁¹

1. School of Materials and Metallurgy Northeastern University2. School of Science Changchun University of Science and Technology

摘 要：The Ce-TiO2/KL（diatomite） ball photocatalyst was prepared and characterized based on the pretreated diatomite. The results showed that comparing with the crude diatomite, proper pretreatment could significantly improve its SiO2 purity and specific surface area. The surface of diatomite was clear with uniform pore structure and big pore size. With diatomite ball as carrier, the supported Ce-TiO2/KL ball photocatalyst was prepared by sol-gel method. The photocatalytic performances of the supported Ce-TiO2/ KL ball and Ce-TiO2/KL powder photocatalysts under various preparation conditions were studied in view of photocatalytic degradation rate of Rhodamine B（Rh B） solution. The degradation rate of the ball photocatalysts for Rh B reached 94.6% and could be reused for many times, which showed much better photocatalytic performance and stability than powder photocatalysts.

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