Journal
NANOMATERIALS
Volume 9, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/nano9050774
Keywords
CoMn2O4; catalytic degradation; peroxymonosulfate; UV filters; 2-phenylbenzimidazole-5-sulfonic acid (PBSA)
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Funding
- National Natural Science Foundation of China [21607058]
- Department of Education of Zhejiang Province [Y201840526]
- Jiaxing Clean Production Innovation Team of Leather and Textile Dyeing Finishing
- Jiaxing University
- Nanhu college of Jiaxing University
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In this study, a bimetallic oxide catalyst of cobalt-manganese (CoMn2O4) was synthesized using the sol-gel method, and it was then characterized using a variety of techniques such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) spectroscopy, X-ray photoelectron spectroscopy (XPS), and nitrogen adsorption-desorption isotherms. The obtained novel catalyst, i.e., CoMn2O4, was then used as an activator of peroxymonosulfate (PMS) for the catalytic degradation of a commonly-used UV filter, 2-phenylbenzimidazole-5-sulfonic acid (PBSA) in water. The effects of various factors (e.g., catalyst dosage, PMS concentration, reaction temperature, and pH) in the process were also evaluated. Chemical scavengers and electron paramagnetic resonance (EPR) tests showed that the (OH)-O-center dot and SO4 center dot- were the main reactive oxygen species. Furthermore, this study showed that CoMn2O4 is a promising catalyst for activating PMS to degrade the UV filters.
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