Nitrogen-doped hollow carbon spheres with highly graphitized mesoporous shell : Role of Fe for oxygen evolution reaction
Författare
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.
Avdelning/ar
Publiceringsår
2016-08-15
Språk
Engelska
Sidor
202-208
Publikation/Tidskrift/Serie
Applied Catalysis B: Environmental
Volym
191
Dokumenttyp
Artikel i tidskrift
Förlag
Elsevier
Ämne
- Materials Chemistry
Nyckelord
- Graphitized carbon
- Hollow carbon
- Iron
- Nitrogen-doped
- Oxygen evolution reaction
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0926-3373