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Baek, Jong-Beom
Center for Dimension-Controllable Organic Frameworks
Research Interests
  • Covalent Organic Frameworks (COFs), Carbon Nanotubes(CNTs), graphene, Energy Conversion and Storage

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Revealing Isolated M-N(3)C(1)Active Sites for Efficient Collaborative Oxygen Reduction Catalysis

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Title
Revealing Isolated M-N(3)C(1)Active Sites for Efficient Collaborative Oxygen Reduction Catalysis
Author
Li, FengHan, Gao-FengBu, YunfeiNoh, Hyuk-JunJeon, Jong-PilShin, Tae JooKim, Seok-JinWu, YuenJeong, Hu YoungFu, ZhengpingLu, YalinBaek, Jong-Beom
Issue Date
2020-12
Publisher
WILEY-V C H VERLAG GMBH
Citation
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.59, no.52, pp.23678 - 23683
Abstract
Single atom catalysts (SACs) are of great importance for oxygen reduction, a critical process in renewable energy technologies. The catalytic performance of SACs largely depends on the structure of their active sites, but explorations of highly active structures for SAC active sites are still limited. Herein, we demonstrate a combined experimental and theoretical study of oxygen reduction catalysis on SACs, which incorporate M-N(3)C(1)site structure, composed of atomically dispersed transition metals (e.g., Fe, Co, and Cu) in nitrogenated carbon nanosheets. The resulting SACs with M-N(3)C(1)sites exhibited prominent oxygen reduction catalytic activities in both acidic and alkaline media, following the trend Fe-N3C1> Co-N3C1> Cu-N3C1. Theoretical calculations suggest the C atoms in these structures behave as collaborative adsorption sites to M atoms, thanks to interactions between thed/porbitals of the M/C atoms in the M-N(3)C(1)sites, enabling dual site oxygen reduction.
URI
https://scholarworks.unist.ac.kr/handle/201301/48741
URL
https://onlinelibrary.wiley.com/doi/full/10.1002/anie.202008325
DOI
10.1002/anie.202008325
ISSN
1433-7851
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