Clarifying the critical roles of iron in boosting oxygen reduction: Single Fe atoms anchored on carbon vacancies as efficient active sites
文献类型：期刊论文
| 作者 | Tan, Feng2,3; Li, Wei2,3; Wang, Jingsong2; Min, Chungang3; Li, Zhanping4; Zhang, Bingsen5; Zheng, Xusheng6; Li, Lina1; Zhang, Longzhou7; Zhou, Liexing3 |
| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| 出版日期 | 2022-05-15 |
| 卷号 | 305页码:11 |
| ISSN号 | 0926-3373 |
| 关键词 | Structurally-defined precursor Single iron atom Carbon vacancy Catalytic active site Oxygen reduction reaction |
| DOI | 10.1016/j.apcatb.2021.121035 |
| 通讯作者 | Yang, Xikun(yxk630@hotmail.com) |
| 英文摘要 | 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. |
| 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 |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000783081100005 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/172827]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Yang, Xikun |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China 2.Kunming Univ Sci & Technol, Fac Mat Sci & Engn, Kunming 650093, Yunnan, Peoples R China 3.Kunming Univ Sci & Technol, Res Ctr Anal & Measurement, Kunming 650093, Yunnan, Peoples R China 4.Tsinghua Univ, Anal Ctr, Beijing 100080, Peoples R China 5.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 6.Univ Sci & Technol China, Natl Synchrotron Radiat Lab NSRL, Hefei 230029, 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. |
入库方式： OAI收割
来源：金属研究所
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