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Citation: WANG Gui-Yun, WANG Yan-Ji, ZHAO Xin-Qiang, SONG Bao-Jun. Synthesis and Properties of CoO/SrTiO₃ for the Photocatalytic Decomposition of Water[J]. Acta Physico-Chimica Sinica, ;2005, 21(01): 84-88. doi: 10.3866/PKU.WHXB20050117 shu

Synthesis and Properties of CoO/SrTiO₃ for the Photocatalytic Decomposition of Water

1.
College of Chemical Engineering, Hebei University of Technology, Tianjin　300130

Received Date: 21 May 2004
Available Online: 15 January 2005

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).
- Photocatalysis;Strontium titanate;Water decomposition;Crystal perfection
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沈阳化工大学材料科学与工程学院沈阳 110142

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Synthesis and Properties of CoO/SrTiO3 for the Photocatalytic Decomposition of Water

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通讯作者: 陈斌, bchen63@163.com

Synthesis and Properties of CoO/SrTiO₃ for the Photocatalytic Decomposition of Water