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Description
| - The heterogeneous photoinduced electron transfer involving dyes adsorbed at the interface between two immiscible electrolyte solutions and redox molecules located in the adjacent phase manifests itself as photocurrent responses under potentiostatic conditions. Photocurrent transients as functions of the light intensity and bias potential allow the extraction of insightful information on the kinetics of the various processes associated with the photoinduced reaction. Previous analyses of this type of responses were based on phenomenological models that did not consider mass transport. In the present paper, we develop a generalised model for photocurrent transients taking into account the diffusion of reacting species to the interface. Comparison with the experimental data confirms that the responses can be described adequately by applying stationary conditions to the surface concentration of the photoactive species.
- The heterogeneous photoinduced electron transfer involving dyes adsorbed at the interface between two immiscible electrolyte solutions and redox molecules located in the adjacent phase manifests itself as photocurrent responses under potentiostatic conditions. Photocurrent transients as functions of the light intensity and bias potential allow the extraction of insightful information on the kinetics of the various processes associated with the photoinduced reaction. Previous analyses of this type of responses were based on phenomenological models that did not consider mass transport. In the present paper, we develop a generalised model for photocurrent transients taking into account the diffusion of reacting species to the interface. Comparison with the experimental data confirms that the responses can be described adequately by applying stationary conditions to the surface concentration of the photoactive species. (en)
- Byl vytvořen zobecněný model heterogenního fotoindukovaného přenosu elektronu přes rozhraní dvou nemísitelných roztoků elektrolytů zprostředkovaného adsorbovanou fotocitlivou látkou za potenciostatických podmínek. Zatímco předchozí modely neuvažovaly vliv transportu, byl do obecného modelu transport reagujících částic lineární difúzí zahrnut. Srovnání s experimentálními daty potvrzuje, že fotoproudové odezvy lze popsat v rámci tohoto modelu za předpokladu, že pokrytí adsorbentem je stacionární. Závislost odezvy na intensitě dopadajícího světla ukazuje, že rekombinace generovaného iontového páru probíhá reakcí prvního řádu. V závislosti na formálním potenciálu přenosu může k fotoproudu také přispívat spřažená reakce přenosu náboje fotoproduktů. (cs)
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Title
| - A generalised model for dynamic photocurrent responses at dye-sensitised liquid/liquid interfaces
- A generalised model for dynamic photocurrent responses at dye-sensitised liquid/liquid interfaces (en)
- Zobecněný model dynamické fotoproudové odezvy na rozhraní kapalina-kapalina za přítomnosti adsorbované fotocitlivé látky (cs)
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skos:prefLabel
| - A generalised model for dynamic photocurrent responses at dye-sensitised liquid/liquid interfaces
- A generalised model for dynamic photocurrent responses at dye-sensitised liquid/liquid interfaces (en)
- Zobecněný model dynamické fotoproudové odezvy na rozhraní kapalina-kapalina za přítomnosti adsorbované fotocitlivé látky (cs)
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skos:notation
| - RIV/61388955:_____/05:00000618!RIV06-AV0-61388955
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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(ME 502), Z(AV0Z40400503)
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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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
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http://linked.open...ai/riv/idVysledku
| - RIV/61388955:_____/05:00000618
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - ITIES; liquid interfaces; photocurrent; electron transfer (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - CH - Švýcarská konfederace
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - Journal of the Electroanalytical Chemistry and Journal of Electroanalytical Chemistry and Interfacial Electrochemistry
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Girault, H. H.
- Samec, Zdeněk
- Fermín, D. J.
- Eugster, N.
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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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is http://linked.open...avai/riv/vysledek
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