BiOBr@Bi<sub>2</sub>MoO<sub>6</sub>复合光催化剂制备及其对RhB和BPA降解

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Abstract

BiOBr@Bi₂MoO₆ photocatalyst was synthesized by a two-step solvothermal method, and characterized by XRD, SEM, XPS, PL and UV-vis DRS. The photocatalytic performance was evaluated by the degradation of Rhodamine B and bisphenol A (BPA) under visible light irradiation. As a result, the BiOBr@Bi₂MoO₆ heterojunction exhibited higher photocatalytic activity than that of pure Bi₂MoO₆. The optimal composite with 20% BiOBr content showed the highest photocatalytic activity, the photodegradation rate was 97.51% and 95.41% over RhB and BPA, respectively. By the detection of active species, demonstrated that h⁺ and·O₂^- played the crucial roles in photodegradation of pollutants. The possible mechanism of the enhanced photocatalytic performance of the BiOBr@Bi₂MoO₆ heterojunctions was discussed. The result indicated that the formation of heterostructure between BiOBr and Bi₂MoO₆ was the main effect factor with enhanced photocatalytic activity. Besides, BiOBr@Bi₂MoO₆-20heterostructure showed excellent stability and reusability in the visible light photochemical applications.

Key words： BiOBr@Bi₂MoO₆ heterojunction photocatalysis visible-light

Received: 01 November 2016

PACS:	X703
	0643.36

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	Articles by authors
	YANG Jia
	NIU Xiao-jun
	CHEN Wei-yi
	AN Shao-rong

Cite this article:

YANG Jia,NIU Xiao-jun,CHEN Wei-yi等. Synthesis of BiOBr@Bi₂MoO₆photocatalyst with excellent visible light photocatalytic removal of RhB and BPA[J]. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(6): 2130-2138.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2017/V37/I6/2130

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