Issue 39, 2024

Study on the photo-assisted activation of PMS by CuMo1−xWxO4 for degradation of tetracycline

Abstract

In this study, a series of CuMo1−xWxO4 solid solutions (CMWO) were prepared by adjusting the ratio of Mo to W. The morphology, phase, specific surface area, and valence state of the catalysts were characterized using SEM, TEM, XRD, BET, and XPS analysis. The photoelectric characteristics of the CuMo1−xWxO4 solid solution materials were analyzed in detail using Mott–Schottky, EIS, PL, and UV-vis DRS analysis. The experimental results show that the energy band structure of the CMWO solid solutions can be tuned to inhibit the carrier recombination under light excitation, thereby facilitating effective electron–hole pair separation. This significantly enhances the performance of photo-assisted PMS activation for tetracycline (TC) degradation. The solid solution material CMWO-3, with a Mo/W ratio of 7 : 3, achieved a TC degradation rate of 88% at pH 5. After five cycles, the TC degradation rate remained at 86%. Throughout the reaction process, photocatalysis and PMS activation exhibited a synergistic effect, generating reactive species such as SO4˙, ˙OH, 1O2, and ˙O2.

Graphical abstract: Study on the photo-assisted activation of PMS by CuMo1−xWxO4 for degradation of tetracycline

Supplementary files

Article information

Article type
Paper
Submitted
26 Jul 2024
Accepted
17 Sep 2024
First published
19 Sep 2024

New J. Chem., 2024,48, 17202-17214

Study on the photo-assisted activation of PMS by CuMo1−xWxO4 for degradation of tetracycline

Y. Xing, Y. Chen, F. Tian, X. Jin, H. M. A. Javed and G. Ni, New J. Chem., 2024, 48, 17202 DOI: 10.1039/D4NJ03347G

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