CoMn<sub>2</sub>O<sub>4</sub> Catalyst Prepared Using the Sol-Gel Method for the Activation of Peroxymonosulfate and Degradation of UV Filter 2-Phenylbenzimidazole-5-sulfonic Acid (PBSA)
Chihao Lin,
Dejian Shi,
Zhentao Wu,
Lingfeng Zhang,
Zhicai Zhai,
Yingsen Fang,
Ping Sun,
Ruirui Han,
Jiaqiang Wu,
Hui Liu
Affiliations
Chihao Lin
College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
Dejian Shi
College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
Zhentao Wu
College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
Lingfeng Zhang
College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
Zhicai Zhai
College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
Yingsen Fang
College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
Ping Sun
College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
Ruirui Han
Nanhu College, Jiaxing University, Jiaxing 314001, China
Jiaqiang Wu
Nanhu College, Jiaxing University, Jiaxing 314001, China
Hui Liu
College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
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 and SO4•− were the main reactive oxygen species. Furthermore, this study showed that CoMn2O4 is a promising catalyst for activating PMS to degrade the UV filters.
