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Acta Physico-Chimica Sinica  2005, Vol. 21 Issue (01): 84-88    DOI: 10.3866/PKU.WHXB20050117
Note     
Synthesis and Properties of CoO/SrTiO3 for the Photocatalytic Decomposition of Water
WANG Gui-Yun;WANG Yan-Ji;ZHAO Xin-Qiang;SONG Bao-Jun
College of Chemical Engineering, Hebei University of Technology, Tianjin 300130
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Abstract  SrTiO3 powder with high crystal perfection was synthesized by solid-state reaction of strontium nitrate with TiO(OH)2 formed by hydrolysis of tetra-butoxy titanium in the presence of alkali metal compound mineralizer. Then a photocatalyst, CoO/SrTiO3, was prepared by impregnation method. The effect of the mineralezers is decreased in the following order :KOH > NaOH > NaNO3 > KNO3.The photocatalytic activity of CoO/SrTiO3,was increased for ca.8 times when KOH mineralizer was added, with the irradiation of 400 W high-pressure mercury lamp, the hydrogen-generation rate amounts to 480 μmol•g cat-1•h-1 over the CoO/SrTiO3,catalyst.Characterization results from SEM and UV-Vis diffuse reflection spectra analysis show that the solid-state reaction for synthesizing SrTiO3 proceeds completely and the crystal perfection of SrTiO3 is improved by adding KOH mineralizer. The suitable amount of KOH is 2.0%(w).

Key wordsPhotocatalysis      Strontium titanate      Water decomposition      Crystal perfection     
Received: 21 May 2004      Published: 15 January 2005
Corresponding Authors: WANG Yan-Ji     E-mail: yjwang@hebut.edu.cn
Cite this article:

WANG Gui-Yun;WANG Yan-Ji;ZHAO Xin-Qiang;SONG Bao-Jun. Synthesis and Properties of CoO/SrTiO3 for the Photocatalytic Decomposition of Water. Acta Physico-Chimica Sinica, 2005, 21(01): 84-88.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20050117     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2005/V21/I01/84

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