Novel magnetic biochar as an activator for peroxymonosulfate to degrade bisphenol A: Emphasizing the synergistic effect between graphitized structure and CoFe2O4

By Yi Li, Shuanglong Ma, Shengjun Xu, Haichao Fu, Zhuoqian Li, Kai Li, Kai Sheng, Jinge Du, Xin Lu, Xianghua Li and 1 more. 2020

226 citations recorded by the source corpus.

Abstract The biochar loaded with CoFe2O4 nanoparticles (CoFe2O4/HPC) fabricated by pyrolysis exhibited strong magnetic property, hierarchical porous and graphitized structure. CoFe2O4/HPC showed much better bisphenol A degradation than CoFe2O4 in presence of peroxymonosulfate. The graphitized structure and the synergistic effect between graphitized structure and CoFe2O4 were found to be responsible for the superiority of CoFe2O4/HPC among all the other catalysts. The prominent role including radical way mainly contributed by SO4 − and non-radical way achieved by 1O2, 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 O2 −, and the participation of C O in 1O2 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.

Subfields: Biomedical Engineering, Renewable Energy, Sustainability and the Environment, Water Science and Technology

View Paper: https://www.semanticscholar.org/paper/fc1e4889af66c8ed10fe789670ae91a943d5cb66