Electrochemical behavior of copper metal core/oxide shell ultra-fine particles on mercury electrodes in aqueous dispersions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F09%3A00326227" target="_blank" >RIV/61388955:_____/09:00326227 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Electrochemical behavior of copper metal core/oxide shell ultra-fine particles on mercury electrodes in aqueous dispersions

Popis výsledku v původním jazyce

Methods of voltammetry and polarography have been applied to study electrochemical behavior of ultrafine copper particles with Z-average diameter similar to 120 nm in aqueous electrolytic media on mercury electrodes. Particles have been preliminarily stabilized by controllable passivation at low partial pressures of oxygen what resulted in formation of superficial oxide shell with certain composition and structure. It has been found that special electrochemical behavior of the particles in aqueous mediais caused by the size effects as well as by the processes (partial dissolution, complexation) occurring at the "particle/solution" interface. Electroreduction of the dispersions takes place at about -0.8 V (Ag/AgCl/KCl sat.). The mechanism of electroreduction includes an adsorption stage due to electric charge which the particles bear in the electrolyte.

Název v anglickém jazyce

Electrochemical behavior of copper metal core/oxide shell ultra-fine particles on mercury electrodes in aqueous dispersions

Popis výsledku anglicky

Methods of voltammetry and polarography have been applied to study electrochemical behavior of ultrafine copper particles with Z-average diameter similar to 120 nm in aqueous electrolytic media on mercury electrodes. Particles have been preliminarily stabilized by controllable passivation at low partial pressures of oxygen what resulted in formation of superficial oxide shell with certain composition and structure. It has been found that special electrochemical behavior of the particles in aqueous mediais caused by the size effects as well as by the processes (partial dissolution, complexation) occurring at the "particle/solution" interface. Electroreduction of the dispersions takes place at about -0.8 V (Ag/AgCl/KCl sat.). The mechanism of electroreduction includes an adsorption stage due to electric charge which the particles bear in the electrolyte.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CG - Elektrochemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of the Electroanalytical Chemistry and Journal of Electroanalytical Chemistry and Interfacial Electrochemistry

ISSN

0022-0728

e-ISSN

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Svazek periodika

629

Číslo periodika v rámci svazku

1-2

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

7

Strana od-do

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Kód UT WoS článku

000265468400003

EID výsledku v databázi Scopus

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