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FeCo alloy encased in nitrogen-doped carbon for efficient formaldehyde removal: Preparation, electronic structure, and d-band center tailoring
Zhu, Dandan1,2; Chen, Meijuan3; Huang, Yu2,4; Li, Rong2; Huang, Tingting2; Cao, Jun-ji2,4; Shen, Zhenxing1,2; Lee, Shun Cheng5
Corresponding AuthorHuang, Yu(huangyu@ieecas.cn) ; Shen, Zhenxing(zxshen@mail.xjtu.edu.cn)
2022-02-15
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume424Pages:11
AbstractFormaldehyde is a typical indoor air pollutant that has posed severely adverse effects on human health. Herein, a novel FeCo alloy nanoparticle-embedded nitrogen-doped carbon (FeCo@NC) was synthesized with the aim of tailoring the transition-metal d-band structure toward an improved formaldehyde oxidation activity for the first time. A unique core@shell metal-organic frameworks (MOFs) architecture with a Fe-based Prussian blue analogue core and Co-containing zeolite imidazole framework shell was firstly fabricated. Then, Fe and Co ion alloying was readily achieved owing to the inherent MOF porosity and interionic nonequilibrium diffusion occurring during pyrolysis. High-angle annular dark-field scanning transmission electron microscopy and X-ray absorption fine structure spectra confirm that small FeCo alloys in situ form in FeCo@NC, which exhibits a higher formaldehyde removal efficiency (93%) than the monometallic Fe-based catalyst and a remarkable CO2 selectivity (85%) at room temperature. Density functional theory calculations indicate the number of electrons transferred from the metal core to the outer carbon layer is altered by alloying Fe and Co. More importantly, a downshift in the d-band center relative to the Fermi level occurs from - 0.93 to - 1.04 eV after introducing Co, which could alleviate the adsorption of reaction intermediates and greatly improve the catalytic performance.
KeywordFormaldehyde oxidation FeCo alloy Core-shell MOF@MOF Electronic structure d-band center
DOI10.1016/j.jhazmat.2021.127593
WOS KeywordTOTAL-ENERGY CALCULATIONS ; PLUS LO CALCULATIONS ; OXYGEN REDUCTION ; CATALYTIC-OXIDATION ; EVOLUTION ; NANOPARTICLES ; GRAPHENE ; NANOTUBES ; STRAIN ; LAYER
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Key Research and Devel-opment Program of China, China[2016YFA0203000] ; Strategic Priority Research Program of the Chinese Academy of Sciences, China[XDA23010300] ; Strategic Priority Research Program of the Chinese Academy of Sciences, China[XDA23010000] ; National Science Foundation of China, China[51878644] ; National Science Foundation of China, China[41573138] ; Plan for National Youth Talents of the Organization Department of the Central Committee
WOS Research AreaEngineering ; Environmental Sciences & Ecology
Funding OrganizationNational Key Research and Devel-opment Program of China, China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China ; National Science Foundation of China, China ; Plan for National Youth Talents of the Organization Department of the Central Committee
WOS SubjectEngineering, Environmental ; Environmental Sciences
WOS IDWOS:000719951700006
PublisherELSEVIER
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/17239
Collection粉尘与环境研究室
第四纪科学与全球变化卓越创新中心
Corresponding AuthorHuang, Yu; Shen, Zhenxing
Affiliation1.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China
3.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Peoples R China
4.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
5.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong, Peoples R China
Recommended Citation
GB/T 7714
Zhu, Dandan,Chen, Meijuan,Huang, Yu,et al. FeCo alloy encased in nitrogen-doped carbon for efficient formaldehyde removal: Preparation, electronic structure, and d-band center tailoring[J]. JOURNAL OF HAZARDOUS MATERIALS,2022,424:11.
APA Zhu, Dandan.,Chen, Meijuan.,Huang, Yu.,Li, Rong.,Huang, Tingting.,...&Lee, Shun Cheng.(2022).FeCo alloy encased in nitrogen-doped carbon for efficient formaldehyde removal: Preparation, electronic structure, and d-band center tailoring.JOURNAL OF HAZARDOUS MATERIALS,424,11.
MLA Zhu, Dandan,et al."FeCo alloy encased in nitrogen-doped carbon for efficient formaldehyde removal: Preparation, electronic structure, and d-band center tailoring".JOURNAL OF HAZARDOUS MATERIALS 424(2022):11.
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