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Efficient degradation of orange II by ZnMn2O4 in a novel photo-chemical catalysis system

Frontiers of chemical Science and Engineering 2020年第6期14卷 956-966页

作者： Qingzhuo Ni Hao Cheng Jianfeng Ma Yong Kong Sridhar Komarneni School of Environmental and Safety Engineering Changzhou UniversityChangzhou 213164China Guangxi Key Laboratory of Green Processing of Sugar Resources College of Biological and Chemical EngineeringGuangxi Science University of and TechnologyLiuzhou 545006China Jiangsu Key Laboratory of Oil-Gas Storage and Transportation Technology Changzhou UniversityChangzhou 213164China Department of Ecosystem Science and Management and Materials Research Institute The Pennsylvania State UniversityUniversity ParkPA 16802USA

A ZnMn2O4 catalyst has been synthesized via a sucrose-aided combustion method and characterized by various analytical *** is composed of numerous nanoparticles(15-110 nm)assembled into a porous structure with a specific surface area(SSA)o f 19.1 m^2.g^-*** catalytic activity has been investigated for the degradation of orange II dye using three different systems,i.e.,the photocatalysis system with visible light,the chemocatalysis system with bisulfite,and the photochemical catalysis system with both visible light and *** last system exhibits the maximum degradation efficiency of 90%,much higher than the photocatalysis system(15%)and the chemocatalysis system(67%).The recycling experiments indicate that the ZnMn204 catalyst has high stability and reusability and is thus a green and eximious ***,the potential degradation mechanisms applicable to the three systems are discussed with relevant theoretical analysis and scavenging experiments for *** active species such as Mn(III),o2^-,H^+,eaq,So4^- and Ho^-are proposed to be responsible for the excellent degradation results in the photo-chemical catalysis system with the ZnMn2o4 catalyst.

关键词： ZnMn2O4 photo-chemical catalysis bisulfite dye degradation

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