Synthesis and degradation performance of BiFeO3 photocatalyst
In this study,three BiFeO3 photocatalysts with different morphologies were synthesized by hydrothermal method and sol-gel method,and their photocatalytic activity and degradation performance were analyzed in detail.In particular,the cubic BiFeO3 synthesized using PEG2000 as a directing agent demonstrated the highest degradation efficiency for MB and TC,with degradation rates of 81.0％and 70.5％,respectively,after 120 min of visible light irradiation.Factors such as the high exposure of the(100)crystal plane of the obtained cubic BiFeO3 promote rapid nucleation and favor the reduction of the cube size.In addition,the BiFeO3photocatalyst based on ferrite magnetic semiconductor exhibits high ferromagnetism,which effectively solves the problems of difficult separation between catalyst and product,waste of resources,and secondary pollution of water.
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