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ETR on TiO2 films modified by Pt doping

โœ Scribed by L. Avalle; E. Santos; V.A. Macagno

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
402 KB
Volume
39
Category
Article
ISSN
0013-4686

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โœฆ Synopsis

Abstrac-ETR at Ti/TiO,-Pt electrodes under different conditions were investigated and a correlation wth the electromc properties of the films was made The effect of doping concentration, film thickness and temperature was analysed An mcrease of the catalytic properties of the films was observed for mcreasmg Pt concentration A dunmufioon of the electron transfer current wrth the film thickness was obtamed The presence of Pt w~thm the 6lm also produces a decrease of the energy of activation, mamly m the cathodic dlrectlon, where It remams almost constant wth the potential The results are Interpreted m terms of a cbrect resonance tunnellmg between the redox couple and the underlying metal Key words modified electrodes, electrode transfer reactions, tltamum &oxlde, doped oxides, platinum catalysis

๐Ÿ“œ SIMILAR VOLUMES

Characterization of hafnium oxide films
Characterization of hafnium oxide films modified by Pt doping
โœ M.J. Esplandiu; L.B. Avalle; V.A. Macagno ๐Ÿ“‚ Article ๐Ÿ“… 1995 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 821 KB

The Hf/HfO,-Pt electrodes were prepared through galvanostatic platinum deposition from H,PtCl, solutions followed by potentiodynamic HfO, growth in 0.5 M H,SO, solutions. Electron transfer reactions involving a redox couple and impedance investigations were performed in order to obtain information a