A novel Z-scheme visible light driven Cu2O/Cu/g-C3N4 photocatalyst using metallic copper as a charge transfer mediator

作者：Bao, Yongchao; Chen, Kezheng^*

来源：Molecular Catalysis, 2017, 432: 187-195.

DOI：10.1016/j.mcat.2017.01.008

• Cu2O/Cu/g-C3N4
• Z-scheme photocatalyst
• Photocatalytic activity
• Visible light

The novel Cu2O/Cu/g-C3N4 composites were successfully synthesized via one step reduction method in the presence of g-C3N4. Under visible light irradiation, the Cu2O/Cu/g-C3N4 composites exhibited higher photocatalytic activity than g-C3N4 and Cu/Cu2O, and the 20 at% Cu2O/Cu/g-C3N4 photocatalyst displayed the highest photocatalytic activity. The enhanced photcatalytic mechanism was investigated by radical-trapping and electron spin resonance experiments. A Z-scheme charge transfer mechanism was proposed, in which metallic Cu particles acted as charge separation center. This work could provide some insight into the design of novel Z-scheme photocatalyst with metallic Cu particles as a charge transfer mediator.

• 出版日期2017-5
• 单位青岛科技大学