回流法制备高分散性磷酸铋光催化剂

doi:10.3866/PKU.WHXB201603242

Abstract

Abstract:

BiPO₄ photocatalysts were synthesized by refluxing in ethylene glycol, and the effects of reaction temperature and reaction time on the BiPO₄ crystal structure, morphology, and properties were investigated. The crystal form of BiPO₄ changed from hexagonal to monoclinic on refluxing in the solvent. The produced BiPO₄ photocatalysts showed good activities in photodegradation of methylene blue, and the activity could be adjusted by changing the refluxing temperature and time. BiPO₄ showed the best catalytic properties when the refluxing time was 2 h at 130 ℃; the kinetic constant was 0.161 min^-1. The BiPO₄ dispersibility was still high after standing for 2 d, because of the introduction of surface hydroxy groups by refluxing in ethylene glycol.

Key words: Refluxing, Bismuth phosphate, Photocatalysis, Dispersibility

Kai-Jian ZHU,Wen-Qing YAO,Yong-Fa ZHU. Preparation of Bismuth Phosphate Photocatalyst with High Dispersion by Refluxing Method[J].Acta Phys. -Chim. Sin., 2016, 32(6): 1519-1526.

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Preparation of Bismuth Phosphate Photocatalyst with High Dispersion by Refluxing Method

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