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The performance of an atomically dispersed oxygen reduction catalyst prepared by γ-CD-MOF integration with FePc.
- Source :
-
Nanoscale advances [Nanoscale Adv] 2022 Apr 11; Vol. 4 (9), pp. 2171-2179. Date of Electronic Publication: 2022 Apr 11 (Print Publication: 2022). - Publication Year :
- 2022
-
Abstract
- Here, a series of Fe/N/C catalysts with different proportions and pyrolysis temperatures are prepared by co-pyrolysis of melamine with a γ-cyclodextrin metal-organic framework (γ-CD-MOF) containing iron(ii) phthalocyanine (FePc). Due to the restriction effect of the host and guest at the molecular level, γ-CD-MOF can effectively avoid the π-π stacking of FePc and restrain the agglomeration of Fe atoms during pyrolysis. The phases and structures of the catalysts are characterized, which proves that the obtained catalyst has a three-dimensional porous and internal cavity structure with abundant surface area (1055.317 m <superscript>2</superscript> g <superscript>-1</superscript> ) and Fe is atomically dispersed in nitrogen-doped carbon. The onset potential (0.988 V vs. RHE) and half-wave potential (0.846 V vs. RHE) of FePc@CD/M (1 : 20)-1000 are superior to those of a commercial 20% Pt/C catalyst. FePc@CD/M (1 : 20)-1000 also exhibits an approximately four-electron (3.84) transfer process, good stability and excellent methanol tolerance.<br />Competing Interests: There are no conflicts to declare.<br /> (This journal is © The Royal Society of Chemistry.)
Details
- Language :
- English
- ISSN :
- 2516-0230
- Volume :
- 4
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- Nanoscale advances
- Publication Type :
- Academic Journal
- Accession number :
- 36133450
- Full Text :
- https://doi.org/10.1039/d2na00095d