Preparation and Characterization of Nanometer Photocatalysis SnO2@TiO2

Abstract

Abstract: SnO₂@TiO₂ coated particles have been prepared with Ti(OC₄H₉)₄ by hydrolysis cross link TiO₂ on active SnO₂ hydrated particle. Its morphology and structure were characterized by XRD, TEM, and BETmethod. In order to improve the photocatalytic degradation activity of SnO₂@TiO₂ for dichlorvos, the conditions of preparing were selected and the better photocatalytic activity were received. The result indicated that: SnO₂@TiO₂ was composited with ranatase TiO₂ and rutile SnO_2. When mass fraction of TiO₂ in SnO₂@TiO₂ is 56.45%, water content in SnO₂ alcohol solution is 20%, volume fraction of Ti(OC₄H₉)₄ in alcohol solution is 34.5%, and ignition temperature of SnO₂@TiO₂ is 680 ℃, the best photocatalytic activity of SnO₂@TiO₂ were received. The other factors of effect of SnO₂@TiO₂ photocatalytic activity were given.

Key words: Nanometer, Active particle layer coated method, Coated photocatalyst, SnO₂@TiO₂

CLC Number:

O643

TrendMD:

YAN Xiu-Ru, LI Xiao-Hong, SONG Kuan-Xiu, ZHAO Hai-Tao, CHEN Xiu-Zeng . Preparation and Characterization of Nanometer Photocatalysis SnO₂@TiO₂[J]. Chem. J. Chinese Universities, 2001, 22(4): 610.

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Preparation and Characterization of Nanometer Photocatalysis SnO₂@TiO₂

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