Physicochemical properties of SnO{sub 2}-Sb{sub 2}O{sub 5} films prepared by the spray pyrolysis technique
- Swiss Federal Inst. of Tech., Lausanne (Switzerland). Inst. of Chemical Engineering
Tin dioxide films doped with Sb(V) of F{sup {minus}} have interesting electrochemical properties in different electrode processes, like low temperature electrochemical combustion of organic pollutants, ozone production, and organic electrosynthesis. The properties of SnO{sub 2}-Sb{sub 2}O{sub 5} mixed-oxide films prepared by the spray pyrolysis method were studied under different synthesis conditions. The film density, measured by profilometry and by a spectrophotometric method, was close to that reported in the literature for crystalline tin dioxide. Analysis by energy dispersive spectrometry and X-ray photoelectron spectroscopy showed that the Sb/Sn atom ratio int eh films was in all cases about 2.5 times larger with respect to that in the precursor solution. Microstructural characterization by wide-angle X-ray scattering indicates that the deposits consist of large sized crystallites. The influence of the substrate temperature (T) on the average crystallite size (l) has shown that l decreases linearly with T. Scanning electron microscopy showed that the surface of films thinner than 0.5--0.8 {micro}m is flat with only a limited number of emerging particles.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 201404
- Journal Information:
- Journal of the Electrochemical Society, Vol. 143, Issue 1; Other Information: PBD: Jan 1996
- Country of Publication:
- United States
- Language:
- English
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