Abstract
In order to further expand the practical applicability of nano photo-activators, a low-toxicity bismuth ferrite mixture (BFO) combined with MnO2 were used to construct nano-catalyst@nickel foam (NF) composite material. A variety of characterization methods were applied to determine the physical, chemical and photoelectrochemical properties of BFO/MnO2@NF. Subsequently, the performance of BFO/MnO2@NF/PMS/Light degradation system was evaluated through the enrofloxacin (ENR) removal experiment. And 87.5% of ENR could achieve removal with 4 cm2 of BFO/MnO2(3:1)@NF and 0.6 g L−1 of peroxymonosulfate (PMS) at the pH of 6.86 in the coupled system. In addition, during the ENR degradation process, the leaching percentages of Bi, Fe, and Mn ions in the BFO/MnO2 nano powder and BFO/MnO2@ NF were 0.041%, 0.29%, 0.12% and 0.035%, 0.068%, 0.084% (0.035% of Ni dissolution), respectively. It could be seen that the leaching concentration of metal ions during the reaction of the nickel foam-supported composite material was much lower than that of the corresponding nano-catalysts powder. Furthermore, the coupled system maintained excellent catalytic performance even after 8 running cycles. Thus, the BFO/MnO2@NF was easy to recover from the system and met the needs of practical applications, which would provide more opportunities for the design of nano-catalysts and practical applications in wastewater treatment processes.
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