Preparation of CoFe2O4/BiFeO3 Z-scheme heterojunction and its photocatalytic degradation of berberine hydrochloride
The pollution of antibiotics in the water environment has been widely concerned,and the photocatalytic technology has a good application prospect in this field.Semiconductor composite construction of Z-scheme heterojunctions can improve carrier separation efficiency and thus photocatalytic degradation efficiency.Herein,CoFe2O4/BiFeO3 Z-scheme heterojunctions were prepared by hydrothermal method and characterized for their structural and photomagnetic properties,which were applied to the photocatalytic degradation of safranin hydrochloride and comprehensively evaluated for their photocatalytic performance.The results showed that the composite catalyst had good optical and magnetic response properties.The degradation rate reached 86.76%at 120min of reaction with a composite heterojunction with a 1∶2 ratio of CoFe2O4 and BiFeO3,a catalyst dosage of 20mg,a pollutant concentration of 5mg/L,and a pH of 3,with good stability.The active substances controlling the reaction were holes and superoxide radicals,and the construction of Z-scheme heterojunctions led to the improvement of their photocatalytic performance.The CoFe2O4/BiFeO3 Z-scheme heterojunctions were environmentally friendly and could be applied to the degradation of antibiotics in aqueous environments.This study provides a feasible idea for the photocatalytic degradation of antibiotics and other organic pollutants.
国家科技期刊平台
NSTL
万方数据
