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Article: Fe-N bonding in a carbon nanotube-graphene complex for oxygen reduction: An XAS study

TitleFe-N bonding in a carbon nanotube-graphene complex for oxygen reduction: An XAS study
Authors
Issue Date2014
Citation
Physical Chemistry Chemical Physics, 2014, v. 16, n. 30, p. 15787-15791 How to Cite?
AbstractThe electronic structure study of carbon nanotube-graphene complexes has been performed using comprehensive X-ray absorption spectroscopy (XAS) at Fe L- and K-edges, along with C, N and O K-edges. The results obtained from the study of an iron-containing carbon nanotube-graphene complex (NT-G) have been compared in great detail with those of an iron-free carbon nanotube-graphene complex (pNT-G) and iron phthalocyanine (FePc). It has been confirmed that complex-like Fe3+ in a high spin state is the major iron component in NT-G. The C and N K-edge XANES further confirmed that Fe is very likely to be bonded to N in NT-G. This Fe-N species should be the active site for enhanced oxygen reduction reaction (ORR) activity in NT-G. A unique O K-edge X-ray absorption spectroscopic feature has been observed in NT-G, which might be caused by chemisorbed O2 on the Fe-N site. Such knowledge is important for the understanding of this specific complex, and the knowledge should benefit the rational design of other carbon/metal/nitrogen-containing ORR catalysts with further improved performance. This journal is © the Partner Organisations 2014.
Persistent Identifierhttp://hdl.handle.net/10722/334362
ISSN
2023 Impact Factor: 2.9
2023 SCImago Journal Rankings: 0.721
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhou, Jigang-
dc.contributor.authorDuchesne, Paul N.-
dc.contributor.authorHu, Yongfeng-
dc.contributor.authorWang, Jian-
dc.contributor.authorZhang, Peng-
dc.contributor.authorLi, Yanguang-
dc.contributor.authorRegier, Tom-
dc.contributor.authorDai, Hongjie-
dc.date.accessioned2023-10-20T06:47:36Z-
dc.date.available2023-10-20T06:47:36Z-
dc.date.issued2014-
dc.identifier.citationPhysical Chemistry Chemical Physics, 2014, v. 16, n. 30, p. 15787-15791-
dc.identifier.issn1463-9076-
dc.identifier.urihttp://hdl.handle.net/10722/334362-
dc.description.abstractThe electronic structure study of carbon nanotube-graphene complexes has been performed using comprehensive X-ray absorption spectroscopy (XAS) at Fe L- and K-edges, along with C, N and O K-edges. The results obtained from the study of an iron-containing carbon nanotube-graphene complex (NT-G) have been compared in great detail with those of an iron-free carbon nanotube-graphene complex (pNT-G) and iron phthalocyanine (FePc). It has been confirmed that complex-like Fe3+ in a high spin state is the major iron component in NT-G. The C and N K-edge XANES further confirmed that Fe is very likely to be bonded to N in NT-G. This Fe-N species should be the active site for enhanced oxygen reduction reaction (ORR) activity in NT-G. A unique O K-edge X-ray absorption spectroscopic feature has been observed in NT-G, which might be caused by chemisorbed O2 on the Fe-N site. Such knowledge is important for the understanding of this specific complex, and the knowledge should benefit the rational design of other carbon/metal/nitrogen-containing ORR catalysts with further improved performance. This journal is © the Partner Organisations 2014.-
dc.languageeng-
dc.relation.ispartofPhysical Chemistry Chemical Physics-
dc.titleFe-N bonding in a carbon nanotube-graphene complex for oxygen reduction: An XAS study-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1039/c4cp01455c-
dc.identifier.scopuseid_2-s2.0-84904102266-
dc.identifier.volume16-
dc.identifier.issue30-
dc.identifier.spage15787-
dc.identifier.epage15791-
dc.identifier.isiWOS:000339628400006-

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