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Random nucleation and growth of Pt nanoparticles at the polarized interface between two immiscible electrolyte solutions

SYSNO ASEP	0081095
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Ostatní články
Title	Random nucleation and growth of Pt nanoparticles at the polarized interface between two immiscible electrolyte solutions
Title	Náhodná nukleace a růst Pt nanočástic na polarizovaném rozhraní mezi nemísitelnými roztoky elektrolytů
Author(s)	Trojánek, Antonín (UFCH-W)_RID Langmaier, Jan (UFCH-W)_{RID, ORCID, SAI} Samec, Zdeněk (UFCH-W)_{RID, ORCID}
Source Title	Journal of the Electroanalytical Chemistry and Journal of Electroanalytical Chemistry and Interfacial Electrochemistry. - : Elsevier - ISSN 0022-0728 Roč. 599, č. 2 (2007), s. 160-166
Number of pages	7 s.
Language	eng - English
Country	CH - Switzerland
Keywords	polarized ITIES ; deposition ; platinum ; random nucleation and growth
Subject RIV	CG - Electrochemistry
R&D Projects	IAA4040407 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ	AV0Z40400503 - UFCH-W (2005-2011)
Annotation	Cyclic voltammetry and potential-step chronoamperometry are used to study the Pt deposition at the polarised water vertical bar 1,2-dichloro-ethane (DCE) interface through reduction of a Pt(II) chloro-complex in water by 1,1'-dimethylferrocene in DCE. Thermodynamic analysis suggests that the deposition is controlled by the interfacial kinetics, and that the activity of the metal particle at ITIES does not differ much from that of the bulk metal phase. It is shown that the shape of the experimental potential-step current transients could be described with the help of the available theory of nucleation and growth of a metal particle at a liquid-liquid interface. However, the repeated potential-step experiments on the bare interface reveal that the initial rate of the Pt deposition can attain a broad range of values that spans over two orders of magnitude.
Workplace	J. Heyrovsky Institute of Physical Chemistry
Contact	Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
Year of Publishing	2007

Number of the records: 1