ICCAS OpenIR
Identification of FeN4 as an Efficient Active Site for Electrochemical N-2 Reduction
He, Chao; Wu, Ze-Yuan; Zhao, Lu; Ming, Mei; Zhang, Yun; Yi, Yuanping; Hu, Jin-Song
2019-08-01
Source PublicationACS CATALYSIS
ISSN2155-5435
Volume9Issue:8Pages:7311-7317
AbstractElectrocatalytic N-2 reduction to NH3 is an attractive method for artificial N-2 fixation at ambient conditions. Herein, we demonstrate that Fe-NC materials could be efficient for electrochemical N-2 reduction reaction (NRR) using iron phthalocyanine (FePc) with a well-defined FeN4 configuration as a model catalyst. By uniformly loading FePc molecules on porous carbon, it exhibits a high electrocatalytic activity for NRR with a NH3 yield rate of 137.95 mu g h(-1) mg(Fepc)(-1) at a low potential of -0.3 V (vs RHE). Importantly, by making comparisons with phthalocyanine without the Fe center and performing control and poisoning experiments together with theoretical calculations, we identify the Fe center in FeN4 as the most active site for NRR among five possible sites in FePc and discover that the preferred route is the alternating pathway of N-2 on Fe. These results open up opportunities for further exploring metal-nitrogen-carbon materials for highly efficient electrochemical N-2 fixation and NH3 production.
DOI10.1021/acscatal.9b00959
Indexed BySCI
Language英语
WOS IDWOS:000480503700072
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/82695
Collection中国科学院化学研究所
AffiliationChinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
He, Chao,Wu, Ze-Yuan,Zhao, Lu,et al. Identification of FeN4 as an Efficient Active Site for Electrochemical N-2 Reduction[J]. ACS CATALYSIS,2019,9(8):7311-7317.
APA He, Chao.,Wu, Ze-Yuan.,Zhao, Lu.,Ming, Mei.,Zhang, Yun.,...&Hu, Jin-Song.(2019).Identification of FeN4 as an Efficient Active Site for Electrochemical N-2 Reduction.ACS CATALYSIS,9(8),7311-7317.
MLA He, Chao,et al."Identification of FeN4 as an Efficient Active Site for Electrochemical N-2 Reduction".ACS CATALYSIS 9.8(2019):7311-7317.
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