Preparation of platinum nanoparticles on n-GaN(0001) substrate by means of electrodeposition

Nanoparticles of platinum (Pt) were directly prepared on n-GaN(0001) by a potentiostatic electrodeposition in 0.5M H2SO4+8mM H2PtCl6 solution and fully characterized by means of scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy dispersive X-ray analysis (EDAX). The as-deposited...

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Published inElectrochimica acta Vol. 114; pp. 352 - 355
Main Authors Li, Yan, Zhao, Yu, Pan, Ge-Bo, Liu, Zheng-Hui, Xu, Geng-Li, Xu, Ke
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 30.12.2013
Subjects
Diffraction
Electrochemical deposition
Electrodeposition
Gallium nitride
Methanol oxidation
Nanoparticles
Platinum
Platinum nanoparticle
Scanning electron microscopy
Surface area
Voltammetry
X-rays
Electrochemical deposition
Gallium nitride
Methanol oxidation
Platinum nanoparticle
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Summary:Nanoparticles of platinum (Pt) were directly prepared on n-GaN(0001) by a potentiostatic electrodeposition in 0.5M H2SO4+8mM H2PtCl6 solution and fully characterized by means of scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy dispersive X-ray analysis (EDAX). The as-deposited nanoparticles, whose morphology and size were dependent on the applied potential and time, were made of platinum. The real surface area and catalytic properties of Pt nanoparticles prepared at different potentials were estimated by cyclic voltammetry in 0.5M H2SO4 and by chronoamperometry in 0.5M H2SO4+0.2M CH3OH solutions, respectively. The maximum of real surface area and the best catalytic activity of Pt nanoparticles were obtained at the potential of −0.7V.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2013.10.066