摘要
The synergistic degradation of contaminants in water by photocatalysis and peroxydisulfate(PDS)activation has been proven to be a promising combined advanced oxidation technology.Consequently,the development of highly efficient photocatalysts that are activated by visible light and PDS is of immense importance.Herein,different proportions of cobalt-doped Bi_(2)Fe_(4)O_(9)(BFO@Co-x)photocatalysts were effectively synthesized for elimination of ciprofloxacin(CIP).The degradation efficiency of CIP achieved by the BFO@Co/Vis/PDS system attained 84.49%(k=0.0516 min−1)under 40 min light irradiation,outperforming the BFO@Co/Vis and PDS/Vis systems by a factor of 1.45 and 3.6,respectively.Characterization and photoelectric performance assessments revealed that the fabrication of BFO@Co-0.5 was successful,enhancing the photocatalytic degradation efficiency under the synergistic effect of PDS.Moreover,the BFO@Co/Vis/PDS system demonstrated favorable adaptability to various pH,inorganic anions,and humic acid in solution.Additionally,the degradation pathways of CIP and the toxicity of products were evaluated using LC/MS and T.E.S.T software,indicating a reduction in the toxicity of CIP degradation products.This study may provide insights into the application of photocatalyst/Vis/PDS combined systems in the field of water environmental treatment.
基金
The National Key Research and Development Program of China(2020YFD1100501).
