摘要
Advanced oxidation processes(AOPs)are promising technology to remove organic pollutant in water.However,the main problem in the AOPs is the low generation of hydroxyl radical(·OH)owing to the low decomposition efficiency of hydrogen peroxide(H_(2)O_(2)).Herein,the spinel type cobalt acid manganese(MnCo_(2)O_(4))with flower morphology was fabricated through a co-precipitation method.In situ Fourier transform infrared spectroscopy confirms that the MnCo_(2)O_(4) with the optimal molar ratio of Co and Mn precursors(CM3,Co:Mn=3)has more Lewis acid sites compared with single metal oxide catalysts(Co_(3)O_(4) and Mn_(2)O_(3)),leading to the excellent performances for H_(2)O_(2) decomposition rate constant on CM3,which is about 15.03 and 4.21 times higher than those of Co_(3)O_(4) and Mn_(2)O_(3),respectively.As a result,the obtained CM3 shows a higher ciprofloxacin degradation ratio than that of Co_(3)O_(4) and Mn_(2)O_(3).Furthermore,CM3 shows an excellent stability during several cycles.This work proposes effective catalysts for ciprofloxacin decomposition and provides feasible route for treating practical environmental problems.
基金
the International Science and Technology Cooperation Program(Nos.2017YFE0127800 and 2018YFE0203400)
National Natural Science Foundation of China(Nos.21872174,22002189 and U1932148)
Hunan Provincial Science and Technology Program(Nos.2017XK2026 and 2017TP1001)
Hunan Provincial Natural Science Foundation(Nos.2020JJ2041,2020JJ5691 and 2021JJ30864)
Key R&D Program of Hunan Province(No.2020WK2002)
Shenzhen Science and Technology Innovation Project(No.JCYJ20180307151313532).
