Photocatalytic and Photo-Fenton Catalytic Degradation Activities of Z-Scheme Ag₂S/BiFeO₃ Heterojunction Composites under Visible-Light Irradiation.

During the photocatalytic and photo-Fenton catalytic processes, an obvious PL signal is detected at around 429 nm, and its intensity exhibits an increasing trend with the irradiation time, suggesting that the production of the •OH radicals during the photocatalytic and photo-Fenton catalytic processes.

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However, when the concentration of H 2 O 2 reaches 2.5 mmol·L −1 , the MO degradation percentage exhibits a decreasing trend.

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