Journal
TOPICS IN CATALYSIS
Volume 56, Issue 15-17, Pages 1560-1568Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s11244-013-0144-9
Keywords
Support effect; Graphene; Carbon nanotube; Pt; Interface interaction; Model catalyst
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Funding
- Grants-in-Aid for Scientific Research [23360352] Funding Source: KAKEN
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Experimental evidence for support effect of carbon are summarized for Pt or PtRu catalysts supported by carbon nanotubes and graphene as well as for model catalysts of Pt/HOPG (highly oriented pyrolytic graphite). The electronic modification of Pt catalysts by the support effect is explained by a pi-d interaction at the interface between graphitic surface and Pt. The interface interaction is related to non-bonding localized states of carbon, which are observed by scanning tunneling spectroscopy near defects or the doped-nitrogen atom on HOPG. The localized states propagate to a few nanometer regions behaving as acid and basic sites.
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