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

Author:
Zhang, Jinyang, Kang, Fuyan, Peng, Hao, Wen, Jing, Zheng, Xiaogang
Source:
RSC advances 2019 v.9 no.24 pp. 13787-13796
ISSN:
2046-2069
Subject:
ciprofloxacin, gentian violet, hydrogen peroxide, irradiation, nanosilver, photocatalysis, photocatalysts, photolysis, pollutants, rhodamines, silver, superoxide anion
Abstract:
Ag-loaded Cu₀.₂₅Zn₀.₇₅S (Ag/Cu₀.₂₅Zn₀.₇₅S) 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 Cu₀.₂₅Zn₀.₇₅S 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/Cu₀.₂₅Zn₀.₇₅S was obtained for the removal of MV and CIP. ·O₂⁻ is mainly responsible for the efficient activity of the photocatalytic process.
Agid:
6427981