Enhancing the photocatalytic activity of Cu0.25Zn0.75S nanodisks by metallic Ag loading in the visible-light region

Jinyang Zhang; Fuyan Kang; Hao Peng; Jing Wen; Xiaogang Zheng

doi:10.1039/c8ra10365h

Enhancing the photocatalytic activity of Cu_0.25Zn_0.75S nanodisks by metallic Ag loading in the visible-light region

RSC Adv. 2019 May 3;9(24):13787-13796. doi: 10.1039/c8ra10365h. eCollection 2019 Apr 30.

Authors

Jinyang Zhang¹, Fuyan Kang¹, Hao Peng², Jing Wen³, Xiaogang Zheng¹

Affiliations

¹ College of Chemistry and Chemical Engineering, Neijiang Normal University Neijiang Sichuan 641100 China.
² College of Chemistry and Chemical Engineering, Yangtze Normal University Chongqing 408100 China cqupenghao@126.com +86 023 72792170 +86 0971 7762180 +86 023 72792170 +86 0971 7762180.
³ Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences Xining Qinghai 810008 China wj580420@163.com.

Abstract

Ag-loaded Cu_0.25Zn_0.75S (Ag/Cu_0.25Zn_0.75S) photocatalysts were synthesized for the photodegradation of organic pollutants such as rhodamine B (RhB), methyl violet (MV) and ciprofloxacin hydrochloride (CIP) under visible-light irradiation. Metallic Ag facilitated the enhancement of the photocatalytic activity of Cu_0.25Zn_0.75S nanodisks, and a Ag loading content of 11% exhibited great degradation efficiency for the degradation of RhB with the assistance of H₂O₂ under acidic conditions. This sample presented slight deactivation for the visible-light-driven degradation of RhB after five cycles. In addition, the excellent photocatalytic activity of Ag/Cu_0.25Zn_0.75S was obtained for the removal of MV and CIP. ·O₂ ^- is mainly responsible for the efficient activity of the photocatalytic process.