Morphological Ensembles of N-Doped Porous Carbon Derived from ZIF-8/Fe-Graphene Nanocomposites: Processing and Electrocatalytic Studies
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Engineering the active site density of porous carbon catalysts for enhanced electrocatalytic activity is the current focus in the quest for economically viable fuel cells. Herein, we synthesise ZIF-8/Fe-graphene composites for the formation of...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
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Wiley - V C H Verlag GmbH & Co. KGaA
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/72204 |
| _version_ | 1848762688107184128 |
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| author | Thomas, M. Illathvalappil, R. Kurungot, S. Nair, Balagopal Mohamed, A. Anilkumar, G. Yamaguchi, T. Hareesh, U. |
| author_facet | Thomas, M. Illathvalappil, R. Kurungot, S. Nair, Balagopal Mohamed, A. Anilkumar, G. Yamaguchi, T. Hareesh, U. |
| author_sort | Thomas, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Engineering the active site density of porous carbon catalysts for enhanced electrocatalytic activity is the current focus in the quest for economically viable fuel cells. Herein, we synthesise ZIF-8/Fe-graphene composites for the formation of N and Fe co-doped carbon with diverse morphologies ranging from tubes and sheets to frameworks of carbon. A synthetic strategy involving the one pot synthesis of ZIF-8 based composites is accomplished by the reaction of 2-methylimidazole with mixed Zn/Fe salt solution containing graphene dispersions. The high temperature heat treatment of this precursor mix yielded micro-meso porous architectures of N, Fe co-doped carbon with dispersions of Fe/Fe3C. An onset potential value of 0.95 V and a half-wave potential of 0.82 V coupled with excellent durability and stability in alkaline medium indicated improved electrocatalytic performances over its commercial Pt/C counterpart. The appreciable electrocatalytic properties of the synthesized carbon are attributed to its morphological diversity, hybrid structure, high N doping and its heteroporous characteristics. The dispersed Fe/Fe3C and FeNx sites facilitated enhanced oxygen adsorption and the graphene inclusions in the composite provided retention of high nitrogen contents. |
| first_indexed | 2025-11-14T10:51:32Z |
| format | Journal Article |
| id | curtin-20.500.11937-72204 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:51:32Z |
| publishDate | 2018 |
| publisher | Wiley - V C H Verlag GmbH & Co. KGaA |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-722042018-12-13T09:34:10Z Morphological Ensembles of N-Doped Porous Carbon Derived from ZIF-8/Fe-Graphene Nanocomposites: Processing and Electrocatalytic Studies Thomas, M. Illathvalappil, R. Kurungot, S. Nair, Balagopal Mohamed, A. Anilkumar, G. Yamaguchi, T. Hareesh, U. © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Engineering the active site density of porous carbon catalysts for enhanced electrocatalytic activity is the current focus in the quest for economically viable fuel cells. Herein, we synthesise ZIF-8/Fe-graphene composites for the formation of N and Fe co-doped carbon with diverse morphologies ranging from tubes and sheets to frameworks of carbon. A synthetic strategy involving the one pot synthesis of ZIF-8 based composites is accomplished by the reaction of 2-methylimidazole with mixed Zn/Fe salt solution containing graphene dispersions. The high temperature heat treatment of this precursor mix yielded micro-meso porous architectures of N, Fe co-doped carbon with dispersions of Fe/Fe3C. An onset potential value of 0.95 V and a half-wave potential of 0.82 V coupled with excellent durability and stability in alkaline medium indicated improved electrocatalytic performances over its commercial Pt/C counterpart. The appreciable electrocatalytic properties of the synthesized carbon are attributed to its morphological diversity, hybrid structure, high N doping and its heteroporous characteristics. The dispersed Fe/Fe3C and FeNx sites facilitated enhanced oxygen adsorption and the graphene inclusions in the composite provided retention of high nitrogen contents. 2018 Journal Article http://hdl.handle.net/20.500.11937/72204 10.1002/slct.201801419 Wiley - V C H Verlag GmbH & Co. KGaA restricted |
| spellingShingle | Thomas, M. Illathvalappil, R. Kurungot, S. Nair, Balagopal Mohamed, A. Anilkumar, G. Yamaguchi, T. Hareesh, U. Morphological Ensembles of N-Doped Porous Carbon Derived from ZIF-8/Fe-Graphene Nanocomposites: Processing and Electrocatalytic Studies |
| title | Morphological Ensembles of N-Doped Porous Carbon Derived from ZIF-8/Fe-Graphene Nanocomposites: Processing and Electrocatalytic Studies |
| title_full | Morphological Ensembles of N-Doped Porous Carbon Derived from ZIF-8/Fe-Graphene Nanocomposites: Processing and Electrocatalytic Studies |
| title_fullStr | Morphological Ensembles of N-Doped Porous Carbon Derived from ZIF-8/Fe-Graphene Nanocomposites: Processing and Electrocatalytic Studies |
| title_full_unstemmed | Morphological Ensembles of N-Doped Porous Carbon Derived from ZIF-8/Fe-Graphene Nanocomposites: Processing and Electrocatalytic Studies |
| title_short | Morphological Ensembles of N-Doped Porous Carbon Derived from ZIF-8/Fe-Graphene Nanocomposites: Processing and Electrocatalytic Studies |
| title_sort | morphological ensembles of n-doped porous carbon derived from zif-8/fe-graphene nanocomposites: processing and electrocatalytic studies |
| url | http://hdl.handle.net/20.500.11937/72204 |