Used oxygen-doped C3N4 to enhance the photocatalysis performance of O-C3N4/Ag@AgCl composite photocatalyst

作者：Li, Weibing^*; Hua, Fangxia; Zhang, Tao; Zhang, Yaping; Xu, Qingqing

来源：RSC Advances, 2016, 6(57): 52067-52075.

DOI：10.1039/c6ra08382j

• AG-AT-AGCL
• PLASMONIC PHOTOCATALYSTS
• PROMOTION MECHANISM
• HIGHLY EFFICIENT
• G-C3N4
• WATER
• CONVERSION
• STABILITY

In this study, an oxygen doped-C3N4/Ag@AgCl (O-C3N4/Ag@AgCl) composite was synthesized by deposition-precipitation method and subsequent photoassisted reduction treatment. The photocatalytic degradation performances of both Rhodamine B (RhB) and phenol were investigated, and the results indicated that the photocatalytic performance of the O-C3N4/Ag@AgCl composite exhibited significant enhancement as compared with that of the graphite-like C3N4/Ag@AgCl composite. The enhancement in the photocatalytic performance of O-C3N4/Ag@AgCl was attributed to the following reasons: on one hand, the oxidizing groups induced by the doping of oxygen on the C3N4 surface, were easily combined with the Ag+ ions, and subsequently, the interfacial chemical bonds were formed between them, these bonds transforming into channels that would enhance the transfer capacity of the photogenerated electrons between O-C3N4 and Ag@AgCl, which improved the electron-hole separation efficiency; on the other hand, the specific surface area of O-C3N4 was enlarged during the oxygen doping process, which increased the effective contact area between O-C3N4 and Ag@AgCl, thereby further improving the separation efficiency of the photogenerated electrons and holes.

• 出版日期2016
• 单位青岛科技大学