Effects of distortion of PO4 tetrahedron on the photocatalytic performances of BiPO4

Chengsi Pan; Di Li; Xinguo Ma; Yi Chen; Yongfa Zhu

doi:10.1039/C1CY00261A

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Effects of distortion of PO₄ tetrahedron on the photocatalytic performances of BiPO₄†

Chengsi Pan,^a Di Li,^a Xinguo Ma,^a Yi Chen^b and Yongfa Zhu*^a

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* Corresponding authors

^a Department of Chemistry, Tsinghua University, Beijing, P.R. China
E-mail: zhuyf@mail.tsinghua.edu.cn
Fax: +86-10-62787601
Tel: +86-10-62783586

^b Research Center of Nano-Science and Nano-Technology, Shanghai University, Shanghai 200444, PR China

Abstract

Three kinds of crystal phase BiPO₄ (HBIP, nMBIP and mMBIP) were selectively synthesized by a hydrothermal method. The governed factors for the formation of three crystal phase of BiPO₄ were both on the acidity of the solution and reaction temperature. The BiPO₄ with nMBIP phase structure showed higher activity for degradation of MB solution under UV irradiation than HBIP and mMBIP. The catalytic activity per surface area activity of nMBIP (3.8×10⁵ h⁻¹ m⁻²) was about ten times higher than that of P25(1.4×10⁴ h⁻¹ m⁻²). The BiPO₄ with nMBIP structure exhibited the highest activity due to the most distorted PO₄ tetrahedron. The induce effect of the dipole moment derived from the distorted PO₄ tetrahedron promoting the separation of e⁻/h⁺ pairs and further benefited for the photocatalytic reaction. This correlation may help to design and develop other oxoacid salt photocatalysts with high activity.

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Article information

DOI: https://doi.org/10.1039/C1CY00261A
Article type: Paper
Submitted: 11 Jul 2011
Accepted: 17 Aug 2011
First published: 06 Sep 2011

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Catal. Sci. Technol., 2011,1, 1399-1405

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Effects of distortion of PO₄ tetrahedron on the photocatalytic performances of BiPO₄

C. Pan, D. Li, X. Ma, Y. Chen and Y. Zhu, Catal. Sci. Technol., 2011, 1, 1399 DOI: 10.1039/C1CY00261A

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