The effects of pH on reactive species formation in moxifloxacin photocatalytic degradation via BiPO4 prismatic

BiPO 4 with a prismatic morphology is successfully prepared using a hydrothermal method . The phase of the as-prepared BiPO 4 is a monazite monoclinic phase. The pH of the zero point of charge is approximately 5 for the BiPO 4 . The effects of the catalyst dosage, initial concentration of moxifloxacin, and initial pH of the moxifloxacin solution on the photocatalytic degradation of moxifloxacin over the as-prepared BiPO 4 are first studied. In addition, cations such as K + , Zn 2+ , and Al 3+ and anions such as CO 3 2− , HPO 4 2− , SO 4 2− , F − , and Cl − are introduced into the photocatalytic system to investigate their effects. Furthermore, through reactive species trapping, it is proven that ⋅O 2 − can be converted to ⋅OH and N 2 can be reduced to NH 3 in acidic solution. This work provides an essential study of BiPO 4 for its application in photocatalytic fields.