Surface Modification of a Magnetic SiO2 Support and Immobilization of a Nano-TiO2 Photocatalyst on It

Chinese Journal of Catalysis ›› 2009, Vol. 30 ›› Issue (9): 939-944.

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Surface Modification of a Magnetic SiO2 Support and Immobilization of a Nano-TiO2 Photocatalyst on It

WANG Liyan1, WANG Hongxia2,*, WANG Aijie1,#, LIU Min2

1State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (SKLUWRE, HIT), Harbin 150001, Heilongjiang, China 2Provincial Key Laboratory for Nano-functionalized Materials and Excitated State, Harbin Normal University, Harbin 150025, Heilongjiang, China

Received:2009-09-25 Online:2009-09-25 Published:2009-09-25

Abstract

Abstract: The surface chemical reactivity of the SiO2/Fe3O4 support was modified through heat treatment in an ethanol/water solution via refluxing. The increase in the content of surface hydroxyls on magnetic silica support after modification enhanced the loading of the TiO2 nanocatalyst and the photocatalytic activity towards photodegradation of Procion red MX-5B.

Key words: silicon dioxide, magnetite, refluxing, surface modification, surface chemical reactivity

WANG Liyan;WANG Hongxia;*;WANG Aijie;#;LIU Min. Surface Modification of a Magnetic SiO2 Support and Immobilization of a Nano-TiO2 Photocatalyst on It[J]. Chinese Journal of Catalysis, 2009, 30(9): 939-944.

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Surface Modification of a Magnetic SiO2 Support and Immobilization of a Nano-TiO2 Photocatalyst on It

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