Preparation of a novel photocatalytic catalyst PW9@ZnO/Ag and the photocatalytic degradation of butyl xanthate under visible light

Ziming Xin; Shuangao Wang; Qianqian He; Xiaoyu Han; Zhongtian Fu; Xinxin Xu; Xin Zhao

doi:10.1016/j.envres.2022.113776

Preparation of a novel photocatalytic catalyst PW₉@ZnO/Ag and the photocatalytic degradation of butyl xanthate under visible light

Environ Res. 2022 Nov;214(Pt 1):113776. doi: 10.1016/j.envres.2022.113776. Epub 2022 Jun 30.

Authors

Ziming Xin¹, Shuangao Wang¹, Qianqian He¹, Xiaoyu Han¹, Zhongtian Fu¹, Xinxin Xu², Xin Zhao³

Affiliations

¹ Department of Environmental Engineering, School of Resources and Civil Engineering, Northeastern University, Shenyang, 110819, China.
² Department of Chemistry, School of Science, Northeastern University, Shenyang, 110819, China.
³ Department of Environmental Engineering, School of Resources and Civil Engineering, Northeastern University, Shenyang, 110819, China. Electronic address: zhaoxin@mail.neu.edu.cn.

PMID: 35780848
DOI: 10.1016/j.envres.2022.113776

Abstract

Photocatalytic technology is attracting considerable attention for the advantages of low cost and environmentally friendly properties. In this study, a novel photocatalyst PW₉@ZnO/Ag (PZA) was synthesized hydrothermally and characterized by a variety of means. The results indicated that ZnO and Ag NPs were successfully decorated and uniformly dispersed on PW₉ to form the composites. The prepared PZA was applied in the degradation of simulated butyl xanthate (BX) beneficiation wastewater both under the UV light and the xenon lamp, and a maximum degradation of 99.83% was obtained under the visible light with 10% ZnO loading, 1 g/L PZA, initial BX concentration of 20 mg/L, and pH 5.5. The PZA was recovered and reused for 5 times, and the degradation rates remained above 70%. Superoxide radical (·O₂^-) was the main active species for the photocatalytic degradation of BX. The experimental results demonstrate that PZA is a promising photocatalyst, making it a prospective strategy to overcome current challengers in the use of xanthate degradation and beneficiation wastewater treatment under visible light.

Keywords: Beneficiation wastewater; Butyl xanthate; Mineral processing; Photocatalytic; Polyoxometalates.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Catalysis
Light
Silver
Thiones
Zinc Oxide*

Substances

Thiones
butylxanthate
Silver
Zinc Oxide