Abstract
In this work, a novel sheet-like BiVO4/Bi4V2O11 composite was successfully prepared using an eco-friendly and facile hydrothermal technique. Under solar simulator light irradiation, the new catalytic system of BiVO4/Bi4V2O11 composite has been structured to achieve the model contaminant sulfamethazine removal, and BiVO4/Bi4V2O11 composite exhibited excellent photo-catalytic ability and cycling capability for the degradation of the model contaminant sulfamethazine; the photodegradation rate of sulfamethazine was close to 95% after 60 min. The results of active species trapping experiments revealed that •O2− contributed considerably towards sulfamethazine degradation. The degradation pathways of sulfamethazine were investigated using a liquid chromatography mass spectrometer (LC-MS), which indicated that the photolytic degradation of sulfamethazine was achieved through cleavage of the S–N and S–C bonds. This work provides new ideas of synthesizing a BiVO4/Bi4V2O11 heterogeneous photocatalyst and building a powerful photocatalytic system for eliminating trace antibiotic micropollutants.
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