期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 404, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2020.124145
关键词
Carbon; Iron nanoparticle; PMS; SO4 center dot-; Electron transfer
资金
- National Natural Science Foundation of China [41907150]
- special fund for topnotch talents in Henan Agricultural University [30500600]
- Project Plan of Key Scientific Research Project of Colleges and Universities in Henan Province [19A610001]
Three magnetic biochar nanocomposites were prepared with different catalytic performances for bisphenol A degradation, where C800-3 showed the best performance. The dominant role of electron transfer pathway was gradually replaced by the SO4 center dot- pathway with the increase of iron amount and the destruction of graphitized carbon layers.
Three magnetic biochar nanocomposites named as C800-1, C800-2 and C800-3 with increased iron deposition amount, decreased graphitized degree and gradually destroyed graphitized carbon layers, respectively, were prepared using potassium ferrate as activator and corn straw as biomass. C800-1, C800-2 and C800-3 exhibited much different bisphenol A degradation effect in presence of peroxymonosulfate among which C800-3 owned the best catalytic performance. For the degradation mechanism, the dominant role of electron transfer pathway was gradually replaced by the SO4 center dot- pathway with the increase of iron amount and the destruction of graphitized carbon layers. This work would provide a simple and feasible method, namely changing the ratio of potassium ferrate and biochar, to manipulate the radical and nonradical degradation pathway in PMS-based organic wastewater purification.
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