Reduced Graphene Oxide (rGO)/BiVO4 Composites with Maximized Interfacial Coupling for Visible Lght Photocatalysis

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• 作者：Tuo Wang ; Changjiang Li ; Junyi Ji ; Yijia Wei ; Peng Zhang ; Shengping Wang ; Xiaobin Fan ; Jinlong Gong
• 刊名：ACS Sustainable Chemistry & Engineering
• 出版年：2014
• 出版时间：October 6, 2014
• 年：2014
• 卷：2
• 期：10
• 页码：2253-2258
• 全文大小：363K
• ISSN：2168-0485

文摘

This paper describes the construction of reduced graphene oxide (rGO)/BiVO₄ composites with maximized interfacial coupling and their application as visible light photocatalysts. Thin rGO sheets (<5 nm) could completely cover BiVO₄ polyhedrons with highly active (040) facets exposed through an evaporation-induced self-assembly process. In addition to the increased surface adsorption effect of rGO, a considerable enhancement of the photoactivity of BiVO₄ has been demonstrated through the degradation of methylene blue upon the covering of rGO. The improved photocatalytic activity is attributed to the formation of well-defined rGO/BiVO₄ interfaces, which greatly enhances the charge separation efficiency.

Keywords:

Reduced graphene oxide (rGO); BiVO₄; Interface; Charge separation; Visible light photocatalysis; Photocatalytic degradation