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Voltammetry of highly dispersed copper powders at mercury electrodes
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SYSNO ASEP 0035888 Document Type K - Proceedings Paper (Czech conf.) R&D Document Type Conference Paper Title Voltammetry of highly dispersed copper powders at mercury electrodes Title Voltametrie vysoce dispergovaných měděných prášků na rtuťových elektrodách Author(s) Heyrovský, Michael (UFCH-W) RID
Korshunov, A. (RU)
Bakardjieva, Snejana (UACH-T) SAI, RID, ORCIDSource Title Sborník přednášek z XXVI. mezinárodního odborného semináře. - Praha : Česká společnost chemická, 2006 / Barek J. ; Navrátil Tomáš - ISBN 80-86238-98-9
s. 37-39Number of pages 3 s. Action Moderní elektrochemické metody /26./ Event date 09.05.2006-12.05.2006 VEvent location Jetřichovice Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords electrochemistry ; voltammetry ; copper Subject RIV CG - Electrochemistry R&D Projects 1H-PK/42 GA MPO - Ministry of Industry and Trade (MPO) CEZ AV0Z40400503 - UFCH-W (2005-2011) AV0Z40320502 - UACH-T (2005-2011) Annotation Average size of majority of the tested powder particles was between 100 and 300 nm, which are kept in relatively stable dispersed form in electrolytic solutions by Brownian motion. Electrolytic activity of the particles was due to 10-30 nm thick surface layer of copper oxides, the outer side consisting of CuO, the inner side of Cu2O. The current due to electroreduction of surface copper oxides followed particulate mechanism: on fortuitous contact of particle with electrode surface an immediate transfer of a number of electrons takes place, determined by time of the contact and by several dynamic and steric factors. No diffusion flux of particles to electrode surface is established. The potential of particulate electroreduction is determined by electronic structure of the actual form of the solid state particle. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2007
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