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Nitrogen-doped hollow carbon spheres with highly graphitized mesoporous shell : Role of Fe for oxygen evolution reaction

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Author

  • Min Young Song
  • Dae Soo Yang
  • Kiran Pal Singh
  • Jinliang Yuan
  • Jong Sung Yu

Summary, in English

There are many studies portraying iron (Fe) and nitrogen (N)-functionalzed carbon as an electrocatalyst along with possible elucidation of catalytically active sites. Despite continuous controversial debate on the active sites/species, the presence of N is believed to be undeniably needed for the efficient catalysis, whereas the necessity and role of Fe are still debated. To clearly understand the role of Fe in Fe and N-functionalized electrocatalyst, N-doped hollow mesoporous shell carbon (N-HMSC) is prepared as a uniform model electrocatalyst by a simple template nanocasting using Fe phthalocyanine (FePc) as a single precursor for carbon, N, and Fe. It is found that the presence of Fe in N-HMSC leads to the efficient graphitization of N-HMSC structure, which can be beneficial for electrocatalytic oxygen evolution reaction (OER). Interestingly, it is observed that Fe is a must for the preparation of high efficient catalyst, but may not be necessary for OER.

Department/s

Publishing year

2016-08-15

Language

English

Pages

202-208

Publication/Series

Applied Catalysis B: Environmental

Volume

191

Document type

Journal article

Publisher

Elsevier

Topic

  • Materials Chemistry

Keywords

  • Graphitized carbon
  • Hollow carbon
  • Iron
  • Nitrogen-doped
  • Oxygen evolution reaction

Status

Published

ISBN/ISSN/Other

  • ISSN: 0926-3373