Polyphenol-mediated interfacial deposition strategy for supported manganese oxide catalysts with excellent pollutant degradation performance

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外文摘要：In persulfate-based advanced oxidation process(PS-AOPs),fixing nanosized metal oxide on processable substrates is highly desirable to avoid the aggregation and loss of nanocatalysts during the practical ap-plication.However,it is still challenging to develop a versatile strategy for the deposition of metal oxide nanocatalysts on various substrates with different physicochemical properties.Herein,polyphenols are utilized as a"molecular glue"and reductant to mediate the interfacial deposition of MnO2 nanocatalysts on different substrates.MnO2 nanocatalysts were in-situ grown on macroscope mineral substrates(e.g.,airstone)via an interfacial redox strategy between tannic acid(TA)and oxidized KMnO4,and then em-ployed as a fixed catalyst of peroxymonosulfate(PMS)activation for treating pharmaceutical and personal care products(PPCPs)in water.The fixed MnO2 exhibited superior catalytic performance toward differ-ent PPCPS via a singlet oxygen(1O2)-dominated nonradical oxidation pathway.PPCPs in the secondary effluent of wastewater treatment plants could be effectively removed by a fixed-bed column of the fixed MnO2 with long term stability.Redox cycle of Mn4+/Mn3+and surface hydroxyl group of the fixed MnO2 was proved to be responsible for the activation of PMS.This work provides a new avenue for developing fixed metal oxides for sustainable water treatment.

外文关键词：

Redox strategyManganese oxidesFixed catalystPeroxymonosulfatePPCPs

作者：

Dong Cheng、Youyou Feng、Bingxi Feng、Ke Wang、Guoxin Song、Gen Wang、Xiaoli Cheng、Yonghui Deng、Jing Wei

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作者单位：

The Key Laboratory of Biomedical Information Engineering of Ministry of Education,State Key Lab of Transducer Technology,School of Life Science and Technology,Xi'an Jiaotong University,Xi'an 710049,China

School of Environmental and Municipal Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China

Department of Chemistry,State Key Laboratory of Molecular Engineering of Polymers,State Key Laboratory of Transducer Technology,Fudan University,Shanghai 200433,China

Key Laboratory of Functional Inorganic Material Chemistry,Ministry of Education,School of Chemistry and Materials Science,Heilongjiang University,Harbin 150080,China

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基金：

国家重点研发计划国家自然科学基金Key Basic Research Program of Science and Technology Commission of Shanghai MunicipalityState Key Laboratory of Transducer Technology of China陕西省重点研发计划

项目编号：

2022YFE01004002170113020JC1415300SKT22072021GY-225

出版年：

2024

DOI：

10.1016/j.cclet.2023.108623

中国化学快报(英文版)

中国化学会

中国化学快报(英文版)

CSTPCD

影响因子：0.771

ISSN：1001-8417

年,卷(期)：2024.35(5)

参考文献量52