Journal
CHEMICAL ENGINEERING JOURNAL
Volume 387, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2020.124094
Keywords
Biochar; CoFe2O4; Peroxymonosulfate; Graphitized structure
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Funding
- special fund for topnotch talents in Henan Agricultural University [30500600]
- National Key Research and Development Program Projects [2016YFD0300803]
- Project Plan of Key Scientific Research in Colleges and Universities of Henan Province [19A610001]
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The biochar loaded with CoFe2O4 nanoparticles (CoFe2O4/HPC) fabricated by pyrolysis exhibited strong mag- netic property, hierarchical porous and graphitized structure. CoFe2O4/HPC showed much better bisphenol A degradation than CoFe(2)O(4)in presence of peroxymonosulfate. The graphitized structure and the synergistic effect between graphitized structure and CoFe2O4 were found to be responsible for the superiorly of CoFe2O4/HPC among all the other catalysts. The prominent role including radical way mainly contributed by SO4 center dot- and non-radical way achieved by O-1(2), and the secondary role of electron transfer way proceeded by graphitized structure were uncovered. The processes such as redox between Co(III)/Co(II) and Fe(III)/Fe(II), the reduction of Fe(III) by O-2(center dot-), and the participation of C=O in O-1(2) production were significant to the excellent catalytic performance of CoFe2O4/HPC. Considering its excellent separation, stability, adaptability and reusability, CoFe2O4/HPC opened up a novel way to develop green catalyst to activate PMS for organic pollutants degradation.
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