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From Metal–Organic Frameworks to Single‐Atom Fe Implanted N‐doped Porous Carbons: Efficient Oxygen Reduction in Both Alkaline and Acidic Media

Journal Article · · Angewandte Chemie
 [1];  [2];  [1];  [3];  [1];  [1]
  1. Hefei National Laboratory for Physical Sciences at the Microscale CAS Key Laboratory of Soft Matter Chemistry Collaborative Innovation Center of Suzhou Nano Science and Technology Department of Chemistry University of Science and Technology of China Hefei Anhui 230026 P. R. China
  2. Materials Science Division Advanced Photon Source Argonne National Laboratory Lemont IL 60439 USA, University of Chinese Academy of Sciences Beijing 100049 P. R. China, X-ray Science Division Advanced Photon Source Argonne National Laboratory Lemont IL 60439 USA
  3. X-ray Science Division Advanced Photon Source Argonne National Laboratory Lemont IL 60439 USA
Abstract

It remains highly desired but a great challenge to achieve atomically dispersed metals in high loadings for efficient catalysis. Now porphyrinic metal–organic frameworks (MOFs) have been synthesized based on a novel mixed‐ligand strategy to afford high‐content (1.76 wt %) single‐atom (SA) iron‐implanted N‐doped porous carbon (Fe SA ‐N‐C) via pyrolysis. Thanks to the single‐atom Fe sites, hierarchical pores, oriented mesochannels and high conductivity, the optimized Fe SA ‐N‐C exhibits excellent oxygen reduction activity and stability, surpassing almost all non‐noble‐metal catalysts and state‐of‐the‐art Pt/C, in both alkaline and more challenging acidic media. More far‐reaching, this MOF‐based mixed‐ligand strategy opens a novel avenue to the precise fabrication of efficient single‐atom catalysts.

Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1441233
Journal Information:
Angewandte Chemie, Journal Name: Angewandte Chemie Journal Issue: 28 Vol. 130; ISSN 0044-8249
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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