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Mechanochemically synthesized Mn3O4@β-cyclodextrin mediates efficient electron transfer process for peroxymonosulfate activation
Abstract
The rational surface engineering of heterogeneous catalysts is of great significance in advanced oxidation processes (AOPs) for eliminating refractory contaminants but remains challenging. In this study, β-cyclodextrin modified Mn3O4 (Mn3O4@β-CD) was prepared through a mechanochemical approach for peroxymonosulfate (PMS) activation, which achieved efficient bisphenol A (BPA) removal via electron transfer process (ETP). The reactive PMS* complex with elevated potential was identified to dominate the ETP by withdrawing electrons from BPA with Mn3O4@β-CD working as electron shuttle, as evidenced by spectroscopy and electrochemical techniques. Experimental results and density functional theory (DFT) calculations showed that the β-CD modification enhanced the interfacial accumulation of pollutants and shortened the migration distance between pollutants (electron donor) and catalysts (electron shuttle) to mediate electron transfer more effectively. Benefitting from the improved ETP, the Mn3O4@β-CD/PMS system showed efficient PMS utilization and practical adaptability in actual waterbodies. This study provides a rational approach for modulating the surface structure of heterogeneous catalysts in PMS-based AOPs for environmental remediation.
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Authors (10)
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Huan Liu
- Shandong University, Jinan 250100, China
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Xiaohui Dai
- Shandong University, Jinan 250100, China
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Lingshuai Kong
- Shandong University, Qingdao 266237, China
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Meng Xie
- Qilu University of Technology (Shandong Academy of Sciences), Shandong Analysis and Test Centre, Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Jinan 250014, China
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Chengji Sui
- Shandong University, Jinan 250100, China
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Qianyi Zhang
- Shandong University, Jinan 250100, China
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Bin Cai
- Shandong University, Jinan 250100, China
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Jinhua Zhan
- Shandong University, Jinan 250100, China
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Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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SEPARATION AND PURIFICATION TECHNOLOGY
no. 326,
ISSN: 1383-5866 - Language:
- English
- Publication year:
- 2023
- Bibliographic description:
- Liu H., Dai X., Kong L., Xie M., Sui C., Zhang Q., Boczkaj G., Kowal P., Cai B., Zhan J.: Mechanochemically synthesized Mn3O4@β-cyclodextrin mediates efficient electron transfer process for peroxymonosulfate activation// SEPARATION AND PURIFICATION TECHNOLOGY -Vol. 326, (2023), s.124873-
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.seppur.2023.124873
- Sources of funding:
-
- COST_FREE
- Verified by:
- Gdańsk University of Technology
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