In this paper are presented data on the preparation and characterization of different oxide electrodes. RuO2-TiO2, IrO2-TiO2, and SnO2-Sb2O5 mixed-oxide films were taken as model systems. For the first, the traditional preparation method based on the pyrolysis of precursor salt deposits was adopted. For the SnO2-based films, the spray pyrolysis preparation was used. The characterization of RuO2-TiO2 films confirms the existence of a solid solution between the two component oxides over a wide composition range. Rutherford backscattering spectrometry confirms the occurrence of segregation of titanium oxide species in the outermost part of the films. Nuclear reaction analysis indicates that large amounts of carbon and hydrogen impurities are trapped in the oxide films. SnO2-based films are less porous and chemically more simple. The differences between the two systems are discussed in terms of the preparation method and the differences in chemical properties of the precursors.
Preparation and characterization of oxide film electrodes
NANNI, Luca;LODI, Gaetano;DE BATTISTI, Achille;
1997
Abstract
In this paper are presented data on the preparation and characterization of different oxide electrodes. RuO2-TiO2, IrO2-TiO2, and SnO2-Sb2O5 mixed-oxide films were taken as model systems. For the first, the traditional preparation method based on the pyrolysis of precursor salt deposits was adopted. For the SnO2-based films, the spray pyrolysis preparation was used. The characterization of RuO2-TiO2 films confirms the existence of a solid solution between the two component oxides over a wide composition range. Rutherford backscattering spectrometry confirms the occurrence of segregation of titanium oxide species in the outermost part of the films. Nuclear reaction analysis indicates that large amounts of carbon and hydrogen impurities are trapped in the oxide films. SnO2-based films are less porous and chemically more simple. The differences between the two systems are discussed in terms of the preparation method and the differences in chemical properties of the precursors.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
