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

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About: Electrochemical behavior of copper metal core/oxide shell ultra-fine particles on mercury electrodes in aqueous dispersions Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	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 media is caused by the size effects as well as by the processes (partial dissolution, complexation) occurring at the %22particle/solution%22 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. 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 media is caused by the size effects as well as by the processes (partial dissolution, complexation) occurring at the %22particle/solution%22 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. (en)
Title	Electrochemical behavior of copper metal core/oxide shell ultra-fine particles on mercury electrodes in aqueous dispersions Electrochemical behavior of copper metal core/oxide shell ultra-fine particles on mercury electrodes in aqueous dispersions (en)
skos:prefLabel	Electrochemical behavior of copper metal core/oxide shell ultra-fine particles on mercury electrodes in aqueous dispersions Electrochemical behavior of copper metal core/oxide shell ultra-fine particles on mercury electrodes in aqueous dispersions (en)
skos:notation	RIV/61388955:_____/09:00326227!RIV10-AV0-61388955
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA203/07/1195), P(IAA400400806), Z(AV0Z40400503)
http://linked.open...iv/cisloPeriodika	1-2
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Heyrovský, Michael
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyzikální chemie J. Heyrovského AV ČR, v.v.i.
http://linked.open...dnocenehoVysledku	312796
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/09:00326227
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	ultrafine copper powders; surface oxide layers; aqueous dispersions; voltammetry; Hg electrodes (en)
http://linked.open.../riv/klicoveSlovo	voltammetry Hg electrodes aqueous dispersions surface oxide layers ultrafine copper powders
http://linked.open...odStatuVydavatele	CH - Švýcarská konfederace
http://linked.open...ontrolniKodProRIV	[32A186775BB8]
http://linked.open...i/riv/nazevZdroje	Journal of the Electroanalytical Chemistry and Journal of Electroanalytical Chemistry and Interfacial Electrochemistry
http://linked.open...in/vavai/riv/obor	CG
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Transport of Charged and Uncharged Species across Models of Biological Membranes Analysis of DNA structure and interactions using electrochemical techniques and chemical probes. Novel techniques and sensors for DNA damage detection
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	629
http://linked.open...iv/tvurceVysledku	Heyrovský, Michael Korshunov, A.
http://linked.open...ain/vavai/riv/wos	000265468400003
http://linked.open...n/vavai/riv/zamer	Struktura, reaktivita a dynamika molekulárních a biomolekulárních systémů: teorie, experiment, aplikace
issn	0022-0728
number of pages	7 (xsd:int)

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