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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
Author(s) -
Jiao Long,
Wan Gang,
Zhang Rui,
Zhou Hua,
Yu ShuHong,
Jiang HaiLong
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201803262
Subject(s) - catalysis , metal organic framework , pyrolysis , materials science , ligand (biochemistry) , doping , porosity , atom (system on chip) , carbon fibers , metal , chemical engineering , inorganic chemistry , oxygen , oxygen atom , nanotechnology , chemistry , metallurgy , organic chemistry , composite material , molecule , optoelectronics , computer science , biochemistry , receptor , adsorption , composite number , engineering , embedded system
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.