<p>Clarifying the critical roles of iron in boosting oxygen reduction: Single Fe atoms anchored on carbon vacancies as efficient active sites</p>

doi:10.1016/j.apcatb.2021.121035

IMR OpenIR

	Clarifying the critical roles of iron in boosting oxygen reduction: Single Fe atoms anchored on carbon vacancies as efficient active sites
	Tan, Feng 1,2; Li, Wei 1,2; Wang, Jingsong 1; Min, Chungang 2; Li, Zhanping 3; Zhang, Bingsen 4; Zheng, Xusheng 5; Li, Lina 6; Zhang, Longzhou 7; Zhou, Liexing 2; Shi, Qingnan 1; Yang, Xikun 1,2
通讯作者	Yang, Xikun(yxk630@hotmail.com)
	2022-05-15
发表期刊	APPLIED CATALYSIS B-ENVIRONMENTAL
ISSN	0926-3373
卷号	305 页码:11
摘要	Due to highly heterogeneity of pyrolyzed transition metal-nitrogen-carbon (M-N-C) catalyst, elucidating mechanisms of roles of metal in enhancing oxygen reduction reaction (ORR) is challenging. Here, we design a surface structurally-defined precursor with Fe-N coordination to atomically disperse iron (Fe) on N-doped carbon hollow microspheres surface (NHMs@Fe) by pyrolysis of the precursor. The obtained NHMs@Fe catalyst exhibits a high ORR activity comparable to commercial Pt/C catalyst. The detailed analyses confirmed that (i) Fe atoms are uniformly distributed on N-poor carbon surface, and (ii) the designed Fe-N-x coordination are destroyed and don't convert into Fe-N-x active sites after thermal activation. We find that single Fe atoms produced by carbothermal reduction are directly trapped into adjacent carbon vacancies generated by the removal of N to create active sites for ORR. This work not only reveals the origin of activity of Fe-N-C catalyst but also opens an avenue for preparation of high-performance M-N-C catalysts.
关键词	Structurally-defined precursor Single iron atom Carbon vacancy Catalytic active site Oxygen reduction reaction
资助者	National Natural Science Foundation of China
DOI	10.1016/j.apcatb.2021.121035
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[21363012] ; National Natural Science Foundation of China[51374117] ; National Natural Science Foundation of China[11764026]
WOS研究方向	Chemistry ; Engineering
WOS类目	Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:000783081100005
出版者	ELSEVIER
引用统计	被引频次：32[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/172828
专题	中国科学院金属研究所
通讯作者	Yang, Xikun
作者单位	1.Kunming Univ Sci & Technol, Fac Mat Sci & Engn, Kunming 650093, Yunnan, Peoples R China 2.Kunming Univ Sci & Technol, Res Ctr Anal & Measurement, Kunming 650093, Yunnan, Peoples R China 3.Tsinghua Univ, Anal Ctr, Beijing 100080, Peoples R China 4.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 5.Univ Sci & Technol China, Natl Synchrotron Radiat Lab NSRL, Hefei 230029, Peoples R China 6.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China 7.Yunnan Univ, Fac Mat Sci & Engn, Kunming 650091, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Tan, Feng,Li, Wei,Wang, Jingsong,et al. Clarifying the critical roles of iron in boosting oxygen reduction: Single Fe atoms anchored on carbon vacancies as efficient active sites [J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2022,305:11.
APA	Tan, Feng.,Li, Wei.,Wang, Jingsong.,Min, Chungang.,Li, Zhanping.,...&Yang, Xikun.(2022). Clarifying the critical roles of iron in boosting oxygen reduction: Single Fe atoms anchored on carbon vacancies as efficient active sites .APPLIED CATALYSIS B-ENVIRONMENTAL,305,11.
MLA	Tan, Feng,et al." Clarifying the critical roles of iron in boosting oxygen reduction: Single Fe atoms anchored on carbon vacancies as efficient active sites ".APPLIED CATALYSIS B-ENVIRONMENTAL 305(2022):11.