Advances in Preparation and Photocatalytic Properties of Sepiolite-based Metal Oxide Compounds
LUI Ruirui1, JI Zhijiang1, TAN Jianjie2, WANG Jing1, ZHANG Jinjun1, LIAO Xiang3
1 State Key Laboratory of Green Building Materials, China Building Materials Academy, Beijing 100024; 2 Xiangtan Yuan Yuan Sepiolite New Materials Co., Ltd., Xiangtan 411100; 3 Xiangtan Sepiolite Technology Co., Ltd., Xiangtan 411100
Abstract: Sepiolite possesses huge specific surface area, high porosity and a certain number of silicon hydroxyl groups on its surface. These groups provide more active sites for the combination of sepiolite with metal-oxides such as TiO2, ZnO, Fe2O3 and so on. Therefore, silicate can be used as an attractive carrier for the composites with favorable adsorbability and catalysis. This paper mainly introduces different preparation methods of sepiolite-based metal oxide compounds such as sol-gel, precipitation, impregnation methods. The unique advantages such as improvement of specific surface area, pore volume and adsorptive capability are discussed. Furthermore, the application of sepiolite-based metal oxide compounds in liquid-phase and gas-phase photocatalysis area are reviewed, and the best degradation effect of these materials and some factors affecting the photocatalytic performance are introduced. Finally, a future development prospect for sepiolite-based metal oxide compounds as an ecological environment material is proposed.
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LUI Ruirui, JI Zhijiang, TAN Jianjie, WANG Jing, ZHANG Jinjun, LIAO Xiang. Advances in Preparation and Photocatalytic Properties of Sepiolite-based Metal Oxide Compounds. Materials Reports, 2017, 31(9): 152-157.
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2017, Vol. 31 
