Loading AgCl@Ag on phosphotungstic acid modified macrocyclic coordination compound: Z-scheme photocatalyst for persistent pollutant degradation and hydrogen evolution

Shunqiang Chen; Feng Li; Taohai Li; Wei Cao

doi:10.1016/j.jcis.2019.03.092

Loading AgCl@Ag on phosphotungstic acid modified macrocyclic coordination compound: Z-scheme photocatalyst for persistent pollutant degradation and hydrogen evolution

J Colloid Interface Sci. 2019 Jul 1:547:50-59. doi: 10.1016/j.jcis.2019.03.092. Epub 2019 Mar 28.

Authors

Shunqiang Chen¹, Feng Li¹, Taohai Li², Wei Cao³

Affiliations

¹ College of Chemistry, Key Lab of Environment Friendly Chemistry and Application in Ministry of Education, Xiangtan University, Xiangtan 411105, China.
² College of Chemistry, Key Lab of Environment Friendly Chemistry and Application in Ministry of Education, Xiangtan University, Xiangtan 411105, China. Electronic address: hnlth@xtu.edu.cn.
³ Nano and Molecular Materials Research Unit, Faculty of Science, University of Oulu, P.O. Box 3000, FIN-90014, Finland.

PMID: 30939344
DOI: 10.1016/j.jcis.2019.03.092

Abstract

In this work, Z-scheme photocatalysts of (CuC₁₀H₂₆N₆)₃(PW₁₂O₄₀)₂/AgCl@Ag were designed and realized for effective removal of solvable and insolvable persistent organic pollutants and hydrogen evolution under simulated sunlight. The catalysts were synthesized via a simple hydrothermal-chemical co-precipitation method. Excellent photocatalytic abilities are demonstrated in degradations of persistent pollutant 2,4-Dinitrophenol (DNP) and tetracycline (TC) under simulated sunlight, as well as a high H₂ production rate of 19.28 μ mol g^-1 h^-1. Through structural, morphological, radical, and electrochemical determinations, the photocatalytic mechanism was studied, and attributed to effective separations of charge carriers between the heterojunctional counterparts of (CuC₁₀H₂₆N₆)₃(PW₁₂O₄₀)₂ and AgCl@Ag.

Keywords: AgCl@Ag; Photocatalyst; Pollutant; Polyoxometalate; Z-scheme.