Tuning the nitrogen contents in carbon matrix encapsulating Co nanoparticles for promoting formaldehyde removal through Mott-Schottky effect | |
Zhu, Dandan1,2; Chen, Meijuan3; Huang, Yu2,4; Li, Rong2; Huang, Tingting2; Cao, Jun-ji2,4; Shen, Zhenxing1,2; Lee, Shun Cheng5 | |
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 | |
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. |
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