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The Confined Interlayer Growth of Ultrathin Two-Dimensional Fe3O4 Nanosheets with Enriched Oxygen Vacancies for Peroxymonosulfate Activation
Wang, Weixue1,2; Liu, Yang1; Yue, Yifan1; Wang, Huihui1; Cheng, Gong1; Gao, Chunyang3; Chen, Chunlin3; Ai, Yuejie1; Chen, Zhe1; Wang, Xiangke1
Corresponding AuthorChen, Zhe(chenz@ncepu.edu.cn)
2021-09-03
Source PublicationACS CATALYSIS
ISSN2155-5435
Volume11Issue:17Pages:11256-11265
AbstractDeveloping iron-based catalysts with superior activity and stability is a long-term goal for peroxymonosulfate (PMS) activation in advanced oxidation processes. Combining the confined interlayer growth strategy with melt infiltration under dry-chemical conditions, we successfully synthesized ultrathin 2D Fe3O4 nanosheets with a monolayer thickness of about 1 nm. Atomic force microscopy, CS-corrected high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray absorption fine structure, etc. jointly revealed that the 2D Fe3O4 nanosheets possessed special graphene-like morphology and enriched oxygen vacancies. As highly efficient AOP catalysts, a series of refractory organic pollutants, including phenolic compounds, antibiotics, and pharmaceuticals, were degraded and mineralized effectively via the activation of PMS. On the basis of radical quenching experiments, electrochemical analysis, and theory calculations, the radical generation (center dot OH and SO4 center dot-) and mediated electron transfer were verified to be key mechanisms in the reaction. The oxygen vacancy-rich ultrathin 2D Fe3O4 mediated the electron transfer between pollutions and oxidants, prompted the redox cycle of Fe3O4, and remarkably lowered the energy barrier for interfacial charge transfer. This work could generate 2D metal oxides nanosheets with sufficient oxygen vacancies in a large scale, leading the insight for boosting the activity of iron-based catalysts.
Keywordlayered silicate ultrathin confined growth iron oxide oxygen vacancy peroxymonosulfate activation
Funding OrganizationNational Natural Science Foundation of China ; National Key Research and Development Program of China ; Fundamental Research Funds for the Central Universities
DOI10.1021/acscatal.1c03331
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[NSFC 21976055] ; National Natural Science Foundation of China[51772010] ; National Key Research and Development Program of China[2017YFA0207002] ; Fundamental Research Funds for the Central Universities[2019MS047] ; Fundamental Research Funds for the Central Universities[2019QN081]
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000693621800051
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/166946
Collection中国科学院金属研究所
Corresponding AuthorChen, Zhe
Affiliation1.North China Elect Power Univ, Coll Environm Sci & Engn, MOE Key Lab Resources & Environm Syst Optimizat, Beijing 102206, Peoples R China
2.Northeast Elect Power Univ, Sch Chem Engn, Jilin 132000, Jilin, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Wang, Weixue,Liu, Yang,Yue, Yifan,et al. The Confined Interlayer Growth of Ultrathin Two-Dimensional Fe3O4 Nanosheets with Enriched Oxygen Vacancies for Peroxymonosulfate Activation[J]. ACS CATALYSIS,2021,11(17):11256-11265.
APA Wang, Weixue.,Liu, Yang.,Yue, Yifan.,Wang, Huihui.,Cheng, Gong.,...&Wang, Xiangke.(2021).The Confined Interlayer Growth of Ultrathin Two-Dimensional Fe3O4 Nanosheets with Enriched Oxygen Vacancies for Peroxymonosulfate Activation.ACS CATALYSIS,11(17),11256-11265.
MLA Wang, Weixue,et al."The Confined Interlayer Growth of Ultrathin Two-Dimensional Fe3O4 Nanosheets with Enriched Oxygen Vacancies for Peroxymonosulfate Activation".ACS CATALYSIS 11.17(2021):11256-11265.
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