Photocatalytic Properties of Magnetically Separable Composite Photocatalyst Nanosphere Prepared by Liquid-Phase Deposition

doi:10.3724/SP.J.1088.2013.20766

Abstract

Abstract: A novel magnetically separable composite photocatalyst nanosphere TiO₂@SiO₂@NiFe₂O₄was prepared by a reverse micelle method and liquid phase deposition technique and characterized by X-ray diffraction and transmission electron microscopy. The results indicated that the nickel ferrite core nanoparticles are completely encapsulated into silica nanospheres as a support (SiO₂@NiFe₂O₄), and titania nanoparticles are deposited onto the surface of SiO₂@NiFe₂O₄ nanospheres, forming a TiO₂ shell for photocatalysis. The degradation experiments of methyl orange indicated that when the molar ratio of H₃BO₃ to [TiF₆]²^- is set at 4, the as-prepared photocatalyst calcined at 300 °C presents the highest photocatalytic activity.

Key words: titania, silica, nickel ferrite, photocatalysis, nanosphere, liquid-phase deposition, coating

XU Shi-Hong, TAN Dong-Dong, LU Wei, SHI Peng-Hui, BI De-Fu, MA Chun-Yan, SHANGGUAN Wen-Feng. Photocatalytic Properties of Magnetically Separable Composite Photocatalyst Nanosphere Prepared by Liquid-Phase Deposition[J]. Chinese Journal of Catalysis, 2013, 34(2): 367-372.

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URL: https://www.cjcatal.com/EN/10.3724/SP.J.1088.2013.20766

https://www.cjcatal.com/EN/Y2013/V34/I2/367

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