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Park, Noejung
Computational Physics & Electronic Structure Lab
Research Interests
  • Electronic structure calculation, computational physics, computational material science

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Direct nitrogen fixation at the edges of graphene nanoplatelets as efficient electrocatalysts for energy conversion

Cited 30 times inthomson ciCited 20 times inthomson ci
Title
Direct nitrogen fixation at the edges of graphene nanoplatelets as efficient electrocatalysts for energy conversion
Author
Jeon, In-YupChoi, Hyun-JungJu, Myung JongChoi, In TaekLim, KiminKo, JaejungKim, Hwan KyuKim, Jae CheonLee, Jae-JoonShin, DongbinJung, Sun-MinSeo, Jeong-MinKim, Min-JungPark, NoejungDai, LimingBaek, Jong-Beom
Keywords
SENSITIZED SOLAR-CELLS; COUNTER ELECTRODE; FUNCTIONALIZED GRAPHENE; OXYGEN REDUCTION; CARBON; PERFORMANCE; FILMS; OXIDE; NANOSHEETS; GRAPHITE
Issue Date
2013-07
Publisher
NATURE PUBLISHING GROUP
Citation
SCIENTIFIC REPORTS, v.3, no., pp.2260 -
Abstract
Nitrogen fixation is essential for the synthesis of many important chemicals (e.g., fertilizers, explosives) and basic building blocks for all forms of life (e.g., nucleotides for DNA and RNA, amino acids for proteins). However, direct nitrogen fixation is challenging as nitrogen (N2) does not easily react with other chemicals. By dry ball-milling graphite with N2, we have discovered a simple, but versatile, scalable and eco-friendly, approach to direct fixation of N2 at the edges of graphene nanoplatelets (GnPs). The mechanochemical cracking of graphitic C-C bonds generated active carbon species that react directly with N2 to form five- and six-membered aromatic rings at the broken edges, leading to solution-processable edge-nitrogenated graphene nanoplatelets (NGnPs) with superb catalytic performance in both dye-sensitized solar cells and fuel cells to replace conventional Pt-based catalysts for energy conversion.
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DOI
10.1038/srep02260
ISSN
2045-2322
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PHY_Journal Papers
ECHE_Journal Papers
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