Enhanced electrocatalytic activity of Pt subnanoclusters on graphene nanosheet surface

Eun Joo Yoo; Tatsuhiro Okata; Tornoki Akita; Masanori Kohyama; Junji Nakamura; Itaru Honma

doi:10.1021/nl900397t

Enhanced electrocatalytic activity of Pt subnanoclusters on graphene nanosheet surface

Eun Joo Yoo, Tatsuhiro Okata, Tornoki Akita, Masanori Kohyama, Junji Nakamura, Itaru Honma

Research output: Contribution to journal › Article › peer-review

979 Citations (Scopus)

Abstract

Graphene 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.

Original language	English
Pages (from-to)	2255-2259
Number of pages	5
Journal	Nano Letters
Volume	9
Issue number	6
DOIs	https://doi.org/10.1021/nl900397t
Publication status	Published - 2009 Jun 10
Externally published	Yes

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanical Engineering

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10.1021/nl900397t

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AU - Okata, Tatsuhiro

AU - Akita, Tornoki

AU - Kohyama, Masanori

AU - Nakamura, Junji

AU - Honma, Itaru

PY - 2009/6/10

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AB - Graphene 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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