期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 11, 期 10, 页码 1885-1887出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2009.08.009
关键词
Pt nanoparticles; Electrocatalysis; Hydrogen oxidation; Oxygen reduction; Cyclodextrins
资金
- Marie Curie Research Training Network [MRTN-CT-2003-504233]
- Intra-European Fellowship [MEIF-CT-2005-515356]
- Reintegration Grant [ERG-2007-224899]
- COST D36
- Birmingham Science City
- Advantage West Midlands (AWM) [2]
- European Regional Development Fund (ERDF)
- Hydrogen-Energy Project
A method for assembling Pt nanoparticles (5 nm diameter) on indium tin oxide (ITO) and highly oriented pyrolytic graphite (HOPG) electrodes, via the potential-assisted deposition of pre-formed perthiolated-beta-cyclodextrin-capped Pt nanoparticles is described. Cyclic voltammetry allowed control over the surface coverage of monodisperse Pt nanoparticles in a simple fashion, as evidenced by the voltammetric response and atomic force microscopy of the resulting electrode surface. The Pt nanoparticle arrays formed in this way were electrocatalytically active towards proton reduction-hydrogen evolution. The methodology described thus opens up a new approach for the deposition of metal nanoparticles with controlled surface density for the investigation of electrocatalytic processes. (C) 2009 Elsevier B.V. All rights reserved.
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