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• W4378974457 abstract "To improve the synergistic degradation activity of photocatalysis-Fenton, CuFe2O4-OVs/Cu2(OH)3Cl composites with two-electron centers were prepared by citric acid complexation and impregnation. Driven by visible light irradiation, a phenol-promoted cooperative degradation system was constructed to degrade methylene blue (MB), which could degrade 93.00% of MB and 100% of phenol within 90 min. The degradation rate constants for MB were 40.80 and 4.35 times higher than those for photocatalysis and Fenton reaction, respectively. Interestingly, the degradation efficiency of MB was doubled when phenol was present in the degradation system, and phenol was also completely degraded. Such excellent improvement in degradation activity is ascribed to (1) the photoassisted valence state conversion of Cu and Fe promotes the photocatalysis-Fenton cycle; (2) In the two-electron center, oxygen vacancies act as electron-rich centers to adsorb and activate H2O2 to generate •OH and consume electrons, while the σ-Cu-ligand complexes formed by Cu(II) and phenol in electron-poor centers are easily attacked by H2O2; (3) phenol acts as an electron donor to promote Cu(II) to capture electrons to achieve rapid degradation of organic contaminants. Based on the analysis of the active species, and degradation intermediates, a synergistic degradation mechanism was proposed, which provides a reference for the efficient degradation of mixed contaminants." @default.
• W4378974457 created "2023-06-02" @default.
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• W4378974457 date "2023-09-01" @default.
• W4378974457 modified "2023-10-16" @default.
• W4378974457 title "Mechanism of phenol-assisted photocatalysis-Fenton degradation of MB: Coordination of the two-electron center and mixed contaminants" @default.
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• W4378974457 doi "https://doi.org/10.1016/j.seppur.2023.124239" @default.
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