检索结果-内蒙古大学图书馆

SSRN 2023年

作者： Pei, Wenkai Wang, Yu Liu, Yujie Zhou, Liang Lei, Juying Zhang, Jinlong National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery School of Resources and Environmental Engineering East China University of Science and Technology Shanghai200237 China ShanghaiEngineeringResearchCenterforMulti-mediaEnvironmentalCatalysisandResourceUtilization East China University of Science and Technology 130 Meilong Road Shanghai200237 China Key Laboratory for Advanced Materials Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research Center School of ChemistryandMolecularEngineering EastChinaUniversityofScienceandTechnology 130MeilongRoad Shanghai200237 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin150090 China

The activation of peroxymonosulfate (PMS) by metal-based materials is currently considered to have great potential for pollutant treatment. However, secondary environmental damage from common transition metals is often unavoidable. Rare earth metals with high energy level, multi-electron configuration and unique 4f orbital can be used as an electron transfer bridge to reduce interfacial energy loss and promote electron transfer, which were incorporated the catalyst to activate PMS. In this study, calcination and hydrothermal method were combined to fabricated LaCO3OH coupled with N, S co-doped graphene(LCOH/GNS), which exhibited superior catalytic performance in PMS activation for LVX degradation. LaCO3OH(LCOH) was first used for PMS activation and showed excellent degradation properties and reduced ecotoxicity. The doping of N and S in the graphene matrix enhances the adsorption of PMS, electron transfer and reduces metal ion leaching, thus promoting the interaction and reaction between LCOH and PMS. The degradation process may involve multiple-oxidative pathways, which was confirmed by radical quenching experiments and the EPR technique. This study provided a novel method for the rational design of rare earth metal based-carbon catalysts, and LCOH/GNS-PMS was expected to be a promising technology for antibiotic degradation in wastewater treatment. © 2023, The Authors. All rights reserved.

关键词： Graphene

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