Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 777, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2021.145794
Keywords
Co3O4/C; Porous carbon; Peroxymonosulfate; Bisphenol A; Advanced oxidation processes
Categories
Funding
- National Key Research and Development Program of China [2016YFC0402600]
- National Natural Science Foundation of China [41001341]
- Water Conservancy Science and Technology Innovation Project of Guangdong Province
- Research Project by Guangdong Province [2013B090500022]
- Fundamental Research Funds for the Central Universities [2019-17]
- China Ministry of Education [2013B090500022]
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This study developed a promising catalyst with good catalytic performance and reusability for the degradation of organic pollutants using cobalt oxide/carbon composite materials. The activation of PMS successfully degraded bisphenol A, and the generation and effects of sulfate and hydroxyl radicals during the reaction process were revealed.
Cobalt oxide and porous carbon materials are desirable catalysts for peroxymonosulfate (PMS) advanced oxidation reaction in the degradation of organic pollutants. Herein, carbon-coated Co3O4 (Co3O4/C) mounted biochar (BC) composites (Co3O4/C-BC) with a three-dimensional spongy-like network were constructed by driving a dual-precursors of zeolitic imidazolate framework (ZIF-67) and Eichhornia crassipes. Considering the unique structures and compositions, the Co3O4/C-BC composites enhanced the dispersion of Co3O4/C nanoparticles, minimized the Co leaching, mediated the size of Co3O4/C nanoparticles, and enhanced the overall catalytic activity. Co3O4/C-BC effectively activated PMS for bisphenol A (BPA) degradation along with satisfactory reusability in advanced oxidation reaction. Electron paramagnetic resonance and radical quenching tests revealed that the generation and effect of sulfate and hydroxyl radicals in reaction process. This work not only provided a promising catalyst for the degradation of organic pollutants but also expanded BPA degradation pathway and PMS activation mechanism. (c) 2021 Published by Elsevier B.V.
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