Enhanced Electrocatalytic Activity of Pt Subnanoclusters on Graphene Nanosheet Surface

被引：1026

作者：

Yoo, EunJoo ^{[1
]}

Okata, Tatsuhiro ^{[1
]}

Akita, Tornoki ^{[3
]}

Kohyama, Masanori ^{[3
]}

Nakamura, Junil ^{[1
]}

Honma, Itaru ^{[2
]}

机构：

[1] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058573, Japan

[2] Natl Inst Adv Ind Sci & Technol, Energy Technol Res Inst, Tsukuba, Ibaraki 3058568, Japan

[3] Natl Inst Adv Ind Sci & Technol, Res Inst Ubiquitous Energy Devices, Ikeda, Osaka 5638577, Japan

来源：

NANO LETTERS | 2009年 / 9卷 / 06期

关键词：

METHANOL FUEL-CELLS; CARBON NANOTUBES; GRAPHITE OXIDE; SHEETS; PERFORMANCE; REDUCTION; CATALYSTS; USAGE;

D O I：

10.1021/nl900397t

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：2255 / 2259

页数：5

共 18 条

[1] Preparation and characterization of graphene oxide paper [J].

Dikin, Dmitriy A. ;

Stankovich, Sasha ;

Zimney, Eric J. ;

Piner, Richard D. ;

Dommett, Geoffrey H. B. ;

Evmenenko, Guennadi ;

Nguyen, SonBinh T. ;

Ruoff, Rodney S. .

NATURE, 2007, 448 (7152) :457-460

[2] One- and two-dimensional diffusion of metal atoms in graphene [J].

Gan, Yanjie ;

Sun, Litao ;

Banhart, Florian .

SMALL, 2008, 4 (05) :587-591

[3] Ultralow loading Pt nanocatalysts prepared by atomic layer deposition on carbon aerogels [J].

King, Jeffrey S. ;

Wittstock, Arne ;

Biener, Juergen ;

Kucheyev, Sergei O. ;

Wang, Yinmin M. ;

Baumann, Theodore F. ;

Giri, Sandeep K. ;

Hamza, Alex V. ;

Baeumer, Marcus ;

Bent, Stacey F. .

NANO LETTERS, 2008, 8 (08) :2405-2409

[4] Raman spectra of graphite oxide and functionalized graphene sheets [J].

Kudin, Konstantin N. ;

Ozbas, Bulent ;

Schniepp, Hannes C. ;

Prud'homme, Robert K. ;

Aksay, Ilhan A. ;

Car, Roberto .

NANO LETTERS, 2008, 8 (01) :36-41

[5] Oxygen-driven unzipping of graphitic materials [J].

Li, JL ;

Kudin, KN ;

McAllister, MJ ;

Prud'homme, RK ;

Aksay, IA ;

Car, R .

PHYSICAL REVIEW LETTERS, 2006, 96 (17)

[6] High performance PtRulr catalysts supported on carbon nanotubes for the anodic oxidation of methanol [J].

Liao, SJ ;

Holmes, KA ;

Tsaprailis, H ;

Birss, VI .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (11) :3504-3505

[7]

MANOHARAN R, 1992, J MATER CHEM, V2, P875

[8] Ab initio study of the optical absorption and wave-vector-dependent dielectric response of graphite -: art. no. 245419 [J].

Marinopoulos, AG ;

Reining, L ;

Rubio, A ;

Olevano, V .

PHYSICAL REVIEW B, 2004, 69 (24) :245419-1

[9] Efficient usage of highly dispersed Pt on carbon nanotubes for electrode catalysts of polymer electrolyte fuel cells [J].

Matsumoto, T ;

Komatsu, T ;

Nakano, H ;

Arai, K ;

Nagashima, Y ;

Yoo, E ;

Yamazaki, T ;

Kijima, M ;

Shimizu, H ;

Takasawa, Y ;

Nakamura, J .

CATALYSIS TODAY, 2004, 90 (3-4) :277-281

[10] Reduction of Pt usage in fuel cell electrocatalysts with carbon nanotube electrodes [J].