Tuning the nitrogen contents in carbon matrix encapsulating Co nanoparticles for promoting formaldehyde removal through Mott-Schottky effect

doi:10.1016/j.apsusc.2022.152552

IEECAS OpenIR > 粉尘与环境研究室

	Tuning the nitrogen contents in carbon matrix encapsulating Co nanoparticles for promoting formaldehyde removal through Mott-Schottky effect
	Zhu, Dandan 1,2; Chen, Meijuan 3; Huang, Yu 2,4; Li, Rong 2; Huang, Tingting 2; Cao, Jun-ji 2,4; Shen, Zhenxing 1,2; Lee, Shun Cheng 5
通讯作者	Huang, Yu(huangyu@ieecas.cn) ; Shen, Zhenxing(zxshen@mail.xjtu.edu.cn)
	2022-05-01
发表期刊	APPLIED SURFACE SCIENCE
ISSN	0169-4332
卷号	583 页码:10
摘要	The increment of N dopants in carbon matrix can effectively enrich the electron density of N-doped carbon encapsulating metal nanoparticles (NPs) via Mott-Schottky effect, thereby favoring the activation of molecular O2 with abundant free electrons on carbon surface. Herein, given the essential role of oxygen activation in formaldehyde (HCHO) oxidation, Co NPs-embedded nitrogen-doped carbon and carbon nanotubes (Co/NCNT) with controllable N contents (2.30 - 4.38 wt%) were prepared and utilized for catalytic oxidation of HCHO at room temperature. Electron transfer from the Co core to the N-doped carbon layer was modulated by the tailorable concentrations of N dopant through the Mott-Schottky effect at their interface, being validated by X-ray and ultraviolet photoelectron spectroscopy, as well as CO2 temperature-programmed desorption experiment. The catalytic activity increased gradually with the elevation of nitrogen content, achieving a HCHO removal efficiency of approximately 80% over Co/NCNT-5 with the maximum nitrogen content. Combined with the comprehensive characterizations, the mechanism underlying the catalytic activity improvement in HCHO oxidation induced by the Mott-Schottky effect was proposed. This work provides a new insight into optimizing the non-noble metal catalysts for HCHO oxidation at room temperature.
关键词	Nitrogen-doped carbon Mott-Schottky effect Co nanoparticles Room-temperature formaldehyde removal Catalytic oxidation
DOI	10.1016/j.apsusc.2022.152552
关键词[WOS]	EFFICIENT CATALYTIC-OXIDATION ; OXYGEN REDUCTION ; TEMPERATURE ; ACTIVATION ; MNO2
收录类别	SCI ; SCI
语种	英语
资助项目	National Science Foundation of China, China[51878644] ; National Science Foundation of China, China[41573138] ; 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 Key Research and Development Program of China, China[2016YFA0203000] ; Plan for National Youth Talents of the Organization Department of the Central Committee
WOS研究方向	Chemistry ; Materials Science ; Physics
项目资助者	National Science Foundation of China, China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China ; National Key Research and Development Program of China, China ; Plan for National Youth Talents of the Organization Department of the Central Committee
WOS类目	Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000773585600003
出版者	ELSEVIER
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/17656
专题	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.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China 2.Chinese Acad Sci, Key Lab Aerosol Chem & Phys, SKLLQG, Inst Earth Environm, 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
推荐引用方式 GB/T 7714	Zhu, Dandan,Chen, Meijuan,Huang, Yu,et al. Tuning the nitrogen contents in carbon matrix encapsulating Co nanoparticles for promoting formaldehyde removal through Mott-Schottky effect[J]. APPLIED SURFACE SCIENCE,2022,583:10.
APA	Zhu, Dandan.,Chen, Meijuan.,Huang, Yu.,Li, Rong.,Huang, Tingting.,...&Lee, Shun Cheng.(2022).Tuning the nitrogen contents in carbon matrix encapsulating Co nanoparticles for promoting formaldehyde removal through Mott-Schottky effect.APPLIED SURFACE SCIENCE,583,10.
MLA	Zhu, Dandan,et al."Tuning the nitrogen contents in carbon matrix encapsulating Co nanoparticles for promoting formaldehyde removal through Mott-Schottky effect".APPLIED SURFACE SCIENCE 583(2022):10.