Enhanced Electrocatalytic Activity of Pt Subnanoclusters on Graphene Nanosheet Surface
2009; American Chemical Society; Volume: 9; Issue: 6 Linguagem: Inglês
10.1021/nl900397t
ISSN1530-6992
AutoresEunjoo Yoo, Tatsuhiro Okata, Tornoki Akita, Masanori Kohyama, Junji Nakamura, Itaru Honma,
Tópico(s)Catalytic Processes in Materials Science
ResumoGraphene nanosheet (GNS) gives rise to an extraordinary modification to the properties of Pt cluster electrocatalysts supported on it. The Pt/GNS electrocatalyst revealed an unusually high activity for methanol oxidation reaction compared to Pt/carbon black catalyst. The Pt/GNS electrocatalyst also revealed quite a different characteristic for CO oxidation among the measured catalyst samples. It is found that Pt particles below 0.5 nm in size are formed on GNS, which would acquire the specific electronic structures of Pt, modifying its catalytic activities.
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