G-C₃N₄/BiVO₄ composites with enhanced and stable visible light photocatalytic activity

详细信息    查看全文

• 作者：Yuexia Ji ; Jiafeng Cao ; Linqing Jiang ; Yaohong Zhang ; Zhiguo Yi
• 关键词：C3N4/BiVO4 photocatalyst ; Photocatalytic performances ; Heterojunction structure
• 刊名：Journal of Alloys and Compounds
• 出版年：25 March, 2014
• 年：2014
• 卷：590
• 期：Complete
• 页码：9-14
• 全文大小：2251 K

文摘

Graphitic carbon nitride (g-C₃N₄) and BiVO₄ heterostructure was constructed for the preparation of novel photocatalyst with high activities. Compared with the bare g-C₃N₄ and BiVO₄, the g-C₃N₄/BiVO₄ composites show remarkably improved visible-induced photocatalytic activities in degrading RhB for the enhanced transport ability of electrons and holes. The mechanism of the heterostructure semiconductors with high performance was supported by the electrochemical measurements. The recyclability of the 90 wt% g-C₃N₄/BiVO₄ photocatalyst demonstrates the composite shows a high structural stability. The improved photocatalytic activities were attributed to the high adsorption to RhB, the stability of the heterostructure and the energy level match that facilitate the charge separation and transport.