Abstract
The antibiotic abusing has triggered serious wastewater pollution and bacterial resistance that leads to much burden to human health. In this work, BiOBr/BiOI dimensional (3D) nanoarchitectures were synthesized using solvothermal method by adjusting the molar ratio of Br/I, and 56%BiOBr/BiOI exhibited the best photocatalytic activities on Tetracycline (TC) degradation and disinfection toward Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) under visible light (λ > 420nm). The optimized photodegradation efficiency of TC was up to 66.4%, and the corresponding E. coli and S. aureus survival rates were estimated as 4.9% and 22.6%, respectively. The photocatalytic mechanism indicated that the reactive oxygen species (ROS) (especially for •O2-) play an important role in the inactivation of bacteria and the photodegradation process. For the first time, the in vivo experiments were conducted to reveal the highly effective sterilization performance of BiOBr/BiOI in promoting the skin wound healing under visible light. This study informed that BiOBr/BiOI composite might be a promising photocatalyst dealing with antibiotic and bacteria in wastewater.
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