Ag3PO4/WO3 Composite with Highly Visible-light Photocatalytic Activity and Stability

doi:10.3724/SP.J.1095.2013.20367

Chinese Journal of Applied Chemistry

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Ag₃PO₄/WO₃ Composite with Highly Visible-light Photocatalytic Activity and Stability

ZHOU Yuan¹, LIU Suqin^1,2*, LIANG Ying¹

(1.Department of Chemical Engineering and Food Science,Hubei University of Arts and Science,Xiangyang 441053,China;
2.Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices,Xiangyang 441053,China)

Received:2012-08-24 Revised:2012-10-03 Published:2013-06-10 Online:2013-06-10

Abstract

Abstract: Ag3PO4/WO3 composite was prepared by an ion-exchange method. The prepared samples were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM) and UV-Vis absorption spectroscopy. The photocatalytic activity of the different samples were evaluated by photocatalytic degradation of methyl orange aqueous solutions under visible-light irradiation(λ＞420 nm). The results showed that Ag3PO4/WO 3 exhibited much higher photocatalytic activity and stability than pristine Ag3PO4. The reason is that the photoinduced electrons on the conduct band of Ag3PO4 can be easily transferred to WO3, resulting in the increase of the separation of photogenerated carriers and the reduction of Ag3PO4.

Key words: Ag3PO4/WO3, visible light, photocatalysis, stability

CLC Number:

O643

ZHOU Yuan1, LIU Suqin1,2*, LIANG Ying1. Ag₃PO₄/WO₃ Composite with Highly Visible-light Photocatalytic Activity and Stability[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2013.20367.

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Ag₃PO₄/WO₃ Composite with Highly Visible-light Photocatalytic Activity and Stability

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