Abstract
AbstractIn this work, a well‐defined flower‐like ZnO (ZnO−F) was prepared through the precipitation method, and a graphene/ZnO/ZnS/MoS2 heterojunction (GR/ZnO−H) was fabricated using the hydrothermal approach. The morphological, compositional, and optical characteristics of the prepared materials were systematically investigated employing various analytical techniques. The photodegradation performance of these materials were assessed through methylene blue (MB) photodegradation experiments. Remarkably, GR/ZnO−H exhibited superior photodegradation efficacy compared to both pure ZnO−F and ZnO/ZnS/MoS2 heterojunctions, with a degradation rate reaching 98.8 % within 240 minutes. The examination of the photocatalytic mechanism revealed that superoxide anions (O2⋅−), hydroxyl radicals (⋅OH), and holes (h+) are the principal photocatalytic active species during MB degradation. This investigation unveils a highly effective photoregenerative material with promising applications in wastewater treatment.
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