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| Description
| - Pro studium elektrochemického chování a adsorpce 5,10,15,20-tetrafenyl-21H, 23H-porfinu kobaltu (II) (CoTPP) na polarizovaném rozhraní voda|1,2-dichlorethan (1,2-DCE) byla použita technika cyklické voltametrie a měření mezifázového povrchového napětí. Ukázalo se, že přítomný CoTPP usnadňuje postupný přenos dvou protonů z vodné fáze do fáze organické , a že tvorba protonizovaného CoTPP (CoTPPH+, CoTPPH22+) způsobuje v oblasti potenciálů pozitivně od potenciálu nulového náboje zvýšení mezifázového povrchového napětí. Posledně jmenovaný překvapivý efekt je připisován specifické adsorpci CoTPPH+ a CoTPPH22+, doprovázené tvorbou bipolární povrchové vrstvy a posunem potenciálu nulového náboje v pozitivním směru. Jsou prezentovány důkazy o katalytických účincích přítomného CoTPP na redukci molekulárního kyslíku dekamethylferocenem, rozpuštěným v organické fázi, probíhající na mezifázovém rozhraní. (cs)
- Cyclic voltammetry and the interfacial tension measurements are used to study electrochemistry and adsorption of 5,10,15,20-tetraphenyl-21H, 23H-porphine cobalt(II) (CoTPP) at the polarized watermid1,2-dichloroethane (1,2-DCE) interface. It is shown that CoTPP facilitates the successive transfer of two protons from water to 1,2-DCE, and that the formation of its protonated forms (CoTPPH+, Click to view the MathML source) gives rise to an enhancement of the interfacial tension (negative surface pressure) at potentials positive to the potential of zero charge (pzc). This surprising effect is ascribed to the specific adsorption of CoTPPH+ and Click to view the MathML source, which is accompanied by the formation of a dipolar surface layer and a positive shift of pzc. Evidence is provided that the presence of CoTPP leads to electrocatalysis of the interfacial reduction of molecular oxygen by decamethylferrocene dissolved in 1,2-DCE.
- Cyclic voltammetry and the interfacial tension measurements are used to study electrochemistry and adsorption of 5,10,15,20-tetraphenyl-21H, 23H-porphine cobalt(II) (CoTPP) at the polarized watermid1,2-dichloroethane (1,2-DCE) interface. It is shown that CoTPP facilitates the successive transfer of two protons from water to 1,2-DCE, and that the formation of its protonated forms (CoTPPH+, Click to view the MathML source) gives rise to an enhancement of the interfacial tension (negative surface pressure) at potentials positive to the potential of zero charge (pzc). This surprising effect is ascribed to the specific adsorption of CoTPPH+ and Click to view the MathML source, which is accompanied by the formation of a dipolar surface layer and a positive shift of pzc. Evidence is provided that the presence of CoTPP leads to electrocatalysis of the interfacial reduction of molecular oxygen by decamethylferrocene dissolved in 1,2-DCE. (en)
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| Title
| - Molecular electrocatalysis of the oxygen reduction at a polarised interface between two immiscible electrolyte solutions by Co(II) tetraphenylporphyrin
- Molecular electrocatalysis of the oxygen reduction at a polarised interface between two immiscible electrolyte solutions by Co(II) tetraphenylporphyrin (en)
- Molekulární elektrokatalýza oxygenové redukce na polarizovaném rozhraní mezi dvěma nemísitelnými elektrolytickými roztoky Co(II) tetraphenylporphyrinu (cs)
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| skos:prefLabel
| - Molecular electrocatalysis of the oxygen reduction at a polarised interface between two immiscible electrolyte solutions by Co(II) tetraphenylporphyrin
- Molecular electrocatalysis of the oxygen reduction at a polarised interface between two immiscible electrolyte solutions by Co(II) tetraphenylporphyrin (en)
- Molekulární elektrokatalýza oxygenové redukce na polarizovaném rozhraní mezi dvěma nemísitelnými elektrolytickými roztoky Co(II) tetraphenylporphyrinu (cs)
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| skos:notation
| - RIV/61388955:_____/07:00084990!RIV08-MSM-61388955
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(GA203/07/1257), P(OC 177), Z(AV0Z40400503)
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
| |
| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
| |
| http://linked.open...ai/riv/idVysledku
| - RIV/61388955:_____/07:00084990
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| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - polarised ITIES; molecular electrocatalysis; oxygen; cobalt tetraphenylporphyrin (en)
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| http://linked.open.../riv/klicoveSlovo
| |
| http://linked.open...odStatuVydavatele
| |
| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Electrochemistry Communications
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| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
| |
| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
| |
| http://linked.open...v/svazekPeriodika
| |
| http://linked.open...iv/tvurceVysledku
| - Samec, Zdeněk
- Trojánek, Antonín
- Mareček, Vladimír
- Jänchenová, Hana
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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