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FeCo alloy encased in nitrogen-doped carbon for efficient formaldehyde removal: Preparation, electronic structure, and d-band center tailoring

文献类型：期刊论文

作者Zhu, Dandan4,5; Chen, Meijuan3; Huang, Yu2,4; Li, Rong4; Huang, Tingting4; Cao, Jun-ji2,4; Shen, Zhenxing4,5; Lee, Shun Cheng1
刊名JOURNAL OF HAZARDOUS MATERIALS
出版日期2022-02-15
卷号424页码:11
ISSN号0304-3894
关键词Formaldehyde oxidation FeCo alloy Core-shell MOF@MOF Electronic structure d-band center
DOI10.1016/j.jhazmat.2021.127593
通讯作者Huang, Yu(huangyu@ieecas.cn) ; Shen, Zhenxing(zxshen@mail.xjtu.edu.cn)
英文摘要Formaldehyde 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.
WOS关键词TOTAL-ENERGY CALCULATIONS ; PLUS LO CALCULATIONS ; OXYGEN REDUCTION ; CATALYTIC-OXIDATION ; EVOLUTION ; NANOPARTICLES ; GRAPHENE ; NANOTUBES ; STRAIN ; LAYER
资助项目National 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研究方向Engineering ; Environmental Sciences & Ecology
语种英语
出版者ELSEVIER
WOS记录号WOS:000719951700006
资助机构National 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
源URL[http://ir.ieecas.cn/handle/361006/17238]  
专题地球环境研究所_粉尘与环境研究室
第四纪科学与全球变化卓越创新中心
通讯作者Huang, Yu; Shen, Zhenxing
作者单位1.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong, Peoples R China
2.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
3.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Peoples R China
4.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China
5.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China
推荐引用方式
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.

入库方式： OAI收割

来源：地球环境研究所

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