Tuning the nitrogen contents in carbon matrix encapsulating Co nanoparticles for promoting formaldehyde removal through Mott-Schottky effect
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 | APPLIED SURFACE SCIENCE |
出版日期 | 2022-05-01 |
卷号 | 583页码:10 |
ISSN号 | 0169-4332 |
关键词 | Nitrogen-doped carbon Mott-Schottky effect Co nanoparticles Room-temperature formaldehyde removal Catalytic oxidation |
DOI | 10.1016/j.apsusc.2022.152552 |
通讯作者 | Huang, Yu(huangyu@ieecas.cn) ; Shen, Zhenxing(zxshen@mail.xjtu.edu.cn) |
英文摘要 | 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. |
WOS关键词 | EFFICIENT CATALYTIC-OXIDATION ; OXYGEN REDUCTION ; TEMPERATURE ; ACTIVATION ; MNO2 |
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 |
语种 | 英语 |
出版者 | ELSEVIER |
WOS记录号 | WOS:000773585600003 |
资助机构 | 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 |
源URL | [http://ir.ieecas.cn/handle/361006/17655] |
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, Key Lab Aerosol Chem & Phys, SKLLQG, Inst Earth Environm, 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. 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. |
入库方式: OAI收割
来源:地球环境研究所
浏览0
下载0
收藏0
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。