The Confined Interlayer Growth of Ultrathin Two-Dimensional Fe3O4 Nanosheets with Enriched Oxygen Vacancies for Peroxymonosulfate Activation

doi:10.1021/acscatal.1c03331

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	The Confined Interlayer Growth of Ultrathin Two-Dimensional Fe3O4 Nanosheets with Enriched Oxygen Vacancies for Peroxymonosulfate Activation
	Wang, Weixue 1,2; Liu, Yang 1; Yue, Yifan 1; Wang, Huihui 1; Cheng, Gong 1; Gao, Chunyang 3; Chen, Chunlin 3; Ai, Yuejie 1; Chen, Zhe 1; Wang, Xiangke 1
刊名	ACS CATALYSIS
	2021-09-03
卷号	11 期号:17 页码:11256-11265
关键词	layered silicate ultrathin confined growth iron oxide oxygen vacancy peroxymonosulfate activation
ISSN号	2155-5435
DOI	10.1021/acscatal.1c03331
通讯作者	Chen, Zhe(chenz@ncepu.edu.cn)
英文摘要	Developing 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.
资助项目	National 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研究方向	Chemistry
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000693621800051
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/166945]
专题	金属研究所_中国科学院金属研究所
通讯作者	Chen, Zhe
作者单位	1.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
推荐引用方式 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.