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Photoelectrochemical Oxidation of Carboxylic Acids on the Sol-Gel Thin TiO2 Layer Electrode
Morozová, Magdalena ; Klusoň, Petr ; Krýsa, Josef ; Šolcová, Olga
Heterogeneous photocatalysis is based on the reaction between the light excitated semiconductor and oxidizable compound adsorbed on the catalytic surface. This work reports the photoelectrocatalytic oxidation characteristics of carboxylic acids on the TiO2 sol-gel thin-film electrode by using electrochemical techniques. The influence of the thickness of the films on photoactivity and the various concentrations of oxalic, formic and acetic acid in the supporting electrolyte were investigated. The effect of the used mono- and dicarboxylic acids on the electrode behaviour for possible application as sensors has been also studied. The surface characteristics of TiO2 films were determined by XRD, SEM and AFM analyses and the photoexcitation properties of nanoparticulate layer electrode were determined by cyclic and linear voltammetry, amperometry and open circuit potential (OCP).
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Fotokatalytické technologie a nové nanopovrchové materiály v roce 2005
Peterka, F. ; Jirkovský, Jaromír ; Šubrt, Jan ; Špatenka, P. ; Krýsa, J. ; Lukeš, Petr ; Kavan, Ladislav ; Štengl, Václav ; Kolouch, A. ; Klusoň, P.
Current state of art in the research and development of photocatalytic titanium oxide nanosurface materials and their practical applications is discussed. The main objectives of new European COST Action “PHONASUM” (COST 540), which is understand as European platform to group the existing European collaborations and to allow for a large exchange between the different European groups focussing on the development of photocatalytical nanomaterials and standard photoactivity testing methods are presented. Specific aims and scientific results of the Research Centre for Nanosurface Engineering "NANOPIN" established in 2005 under the Research and Development Program of the Ministry of Education, Youth and Sports of the Czech Republic are shown in more detail.
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Fotokatalytické technologie a nové nanomateriály 2005
Peterka, F. ; Jirkovský, J. ; Šubrt, Jan ; Špatenka, P. ; Krýsa, J. ; Lukeš, P. ; Kavan, L. ; Štengl, Václav ; Kolouch, A. ; Klusoň, P.
The development of nanocrystaline photocatalytic materials is rapidly growing field of science and technology.
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