About: New electrocatalytic reactions at a mercury electrode in the presence of homocysteine or cysteine and cobalt or nickel ions

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About: New electrocatalytic reactions at a mercury electrode in the presence of homocysteine or cysteine and cobalt or nickel ions Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Homocysteine (Hcy) and cysteine (Cys) mercury thiolate layers were prepared by anodic polarization of a mercury electrode in amino acid containing solutions and then investigated in the cathodic regime in the presence of Ni or Co ions. Mercury thiolate undergoes a slow disintegration resulting in surface-attached mercury sulfide. Hg substitution by Ni or Co yields minute amounts of the relevant metal sulfide. Such a species catalyzes hydrogen evolution at -1.3 V vs. Ag/AgCl. Hcy experiences a faster decomposition and displays a stronger catalytic effect. Each compound catalyzes the reduction of Ni or Co, but only Cys induces typical catalytic evolution processes as the Brdička reaction or the catalytic hydrogen prewave. HCy catalyzes the hydrogen evolution in the presence of Co at -1.5 V in the same way than sulfur derivatives with no amine function do. Correlation between the physical state of the metal sulfide and its catalytic properties are discussed and possible analytical applications suggested. Homocysteine (Hcy) and cysteine (Cys) mercury thiolate layers were prepared by anodic polarization of a mercury electrode in amino acid containing solutions and then investigated in the cathodic regime in the presence of Ni or Co ions. Mercury thiolate undergoes a slow disintegration resulting in surface-attached mercury sulfide. Hg substitution by Ni or Co yields minute amounts of the relevant metal sulfide. Such a species catalyzes hydrogen evolution at -1.3 V vs. Ag/AgCl. Hcy experiences a faster decomposition and displays a stronger catalytic effect. Each compound catalyzes the reduction of Ni or Co, but only Cys induces typical catalytic evolution processes as the Brdička reaction or the catalytic hydrogen prewave. HCy catalyzes the hydrogen evolution in the presence of Co at -1.5 V in the same way than sulfur derivatives with no amine function do. Correlation between the physical state of the metal sulfide and its catalytic properties are discussed and possible analytical applications suggested. (en)
Title	New electrocatalytic reactions at a mercury electrode in the presence of homocysteine or cysteine and cobalt or nickel ions New electrocatalytic reactions at a mercury electrode in the presence of homocysteine or cysteine and cobalt or nickel ions (en)
skos:prefLabel	New electrocatalytic reactions at a mercury electrode in the presence of homocysteine or cysteine and cobalt or nickel ions New electrocatalytic reactions at a mercury electrode in the presence of homocysteine or cysteine and cobalt or nickel ions (en)
skos:notation	RIV/00216275:25310/09:00008402!RIV10-MSM-25310___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(LC06035), Z(MSM0021627502)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Švancara, Ivan Vytřas, Karel Galík, Michal
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	Univerzita Pardubice / Fakulta chemicko-technologická
http://linked.open...dnocenehoVysledku	329354
http://linked.open...ai/riv/idVysledku	RIV/00216275:25310/09:00008402
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Electrocatalysis; mercury electrode; homocystein; cystein; nickel; cobalt (en)
http://linked.open.../riv/klicoveSlovo	cobalt nickel mercury electrode cystein homocystein Electrocatalysis
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[C7355B9513E7]
http://linked.open...i/riv/nazevZdroje	Electroanalysis
http://linked.open...in/vavai/riv/obor	CG
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Centre of Biophysical Chemistry, Bioelectrochemistry and Bioanalysis. New Tools for Genomics, Proteomics and Biomedicine.
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	21
http://linked.open...iv/tvurceVysledku	Vytřas, Karel Švancara, Ivan Galík, Michal Banica, Florinel-Gabriel Banica, Anna
http://linked.open...n/vavai/riv/zamer	Pokročilé analytické a separační metody a jejich aplikace v diagnostice a technologii živých a neživých materiálů
issn	1040-0397
number of pages	8 (xsd:int)
http://localhost/t...ganizacniJednotka	25310

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