Electrochemically assisted photocatalytic degradation of oxalic acidon immobilised TiO2 layer in a batch mode plate film photoreactor

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F02%3A00007224" target="_blank" >RIV/60461373:22310/02:00007224 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Electrochemically assisted photocatalytic degradation of oxalic acidon immobilised TiO2 layer in a batch mode plate film photoreactor

Popis výsledku v původním jazyce

Electrochemically assisted photocatalytic degradation of oxalic acid was studied in a batch mode plate photoreactor composed of particulate TiO2 film immobilized on Ti metal plate (Ti/TiO2 electrode) and Pt wires immersed in a flowing film of aqueous solution (Pt counter electrode). The degradation rate of oxalic acid was followed as a function of the potential of Ti/TiO2 electrode, the oxygen concentration and the light intensity. The presence of oxalic acid caused an increase of the measured photocurrent by one order of magnitude which is due to its reaction with photogenerated holes. The degradation rate increased with increasing potential up to 0.5 V (SCE), then the increase was more gradual. Electrochemically assisted photocatalytic degradation ofoxalic acid proceeded also in the absence of oxygen. The photogenerated electrons caused hydrogen evolution (low oxygen concentration) or predominantely oxygen reduction (high oxygen concentration) on the Pt counter electrode.

Název v anglickém jazyce

Electrochemically assisted photocatalytic degradation of oxalic acidon immobilised TiO2 layer in a batch mode plate film photoreactor

Popis výsledku anglicky

Electrochemically assisted photocatalytic degradation of oxalic acid was studied in a batch mode plate photoreactor composed of particulate TiO2 film immobilized on Ti metal plate (Ti/TiO2 electrode) and Pt wires immersed in a flowing film of aqueous solution (Pt counter electrode). The degradation rate of oxalic acid was followed as a function of the potential of Ti/TiO2 electrode, the oxygen concentration and the light intensity. The presence of oxalic acid caused an increase of the measured photocurrent by one order of magnitude which is due to its reaction with photogenerated holes. The degradation rate increased with increasing potential up to 0.5 V (SCE), then the increase was more gradual. Electrochemically assisted photocatalytic degradation ofoxalic acid proceeded also in the absence of oxygen. The photogenerated electrons caused hydrogen evolution (low oxygen concentration) or predominantely oxygen reduction (high oxygen concentration) on the Pt counter electrode.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2002

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Applied Electrochemistry

ISSN

0021-891X

e-ISSN

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Svazek periodika

32

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

591-597

Kód UT WoS článku

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EID výsledku v databázi Scopus

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