Abstract
Photocatalysis involves identifying photocatalysts that exhibit high reactivity, low cost, and environmental friendliness. These catalysts are crucial for achieving energy conversion and for addressing environmental challenges. In this study, we designed and synthesized a novel ZnO/KCl/g-C3N4 photocatalyst enriched with oxygen vacancies through modification and semiconductor coupling. Its photocatalytic degradation rate of methylene blue reached 0.0346/min, which was 7.5 and 9.5 times higher than that of ZnO and g-C3N4, respectively; the composite had a broad spectrum for degrading various organic dyes and antibiotics. Multiple characterizations were performed on the optical characteristics, microstructure, and charge transfer mechanism. This work presents a unique design approach for rationally modifying the local electronic structure of catalysts and developing S-scheme photocatalysis for efficient industrial wastewater treatment.
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