Controllable preparation of MnCo_(2)O_(4) spinel and catalytic persulfate activation in organic wastewater treatment: Experimental and immobilized evaluation  

作　　者：Qixu Shi Juexiu Li Yongpeng Ma Rui Zhao Miaomiao Li Xinrui Lei Maiqi Sun Yongchao Zhao Gaihuan Ren Jinping Jia 

机构地区：[1]School of Smarts Energy&Environment,Zhongyuan University of Technology,Zhengzhou,450007,China [2]School of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou,450001,China [3]International Education College,Henan Agricultural University,Zhengzhou,450002,China [4]Research Institute of Textile and Clothing Industries,Zhongyuan University of Technology,Zhengzhou,450007,China [5]School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University,Shanghai,200240,China

出　　处：《Progress in Natural Science:Materials International》2024年第4期776-786,共11页自然科学进展·国际材料(英文版)

基　　金：supported by the National Natural Science Foundation of China(No.22306211);College Key Scientific Research Project of Henan Province(No.24A610012);Youth Backbone Teacher Project of Zhongyuan University of Technology(2023XQG06);Financial support from the Postgraduate Education Quality Improving Project(No.JG202217,ALK202309);the Discipline Strength Improving Project of Zhongyuan University of Technology(No.SD202242)were also acknowledged

摘　　要：Transitional metal oxides are excellent candidates as heterogeneous catalysts for activating persulfate towards organics degradation.In this study,MnCo_(2)O_(4)spinel was successfully prepared using a solvent-free molten method.The catalytic performance was systematically investigated and MnCo_(2)O_(4)powder catalyst was successfully immobilized on polyurethane(PU)membrane through electrospinning to assess its application potential.The results showed that peroxymonosulfate(0.1 g L^(-1))activated by MnCo_(2)O_(4)(0.1 g L^(-1))reached 99.92%degradation in 10 min when treating 0.04 g L^(-1)rhodamine B as target pollutant.The abundant oxygen vacancies formation,synergistic effect of Co and Mn ions and high electron transfer mobility are contributing to production of reactive oxygen species.Combining with quenching experiment and time-resolved EPR,the contribution of various active species was proposed,of which^(1)O_(2)exhibited the dominant role.The flowing reaction run by the MnCo_(2)O_(4)-PU membrane activating PMS exhibited universal degradation on different target pollutants.

关 键 词：MnCo_(2)O_(4) SPINEL PEROXYMONOSULFATE CATALYTIC Reactive oxygen species 

分 类 号：TQ426[化学工程] X703[环境科学与工程—环境工程]