CHARACTERIZATION OF RUO2-BASED FILM ELECTRODES BY SECONDARY-ION MASS-SPECTROMETRY

被引:12
作者
DAOLIO, S
FACCHIN, B
PAGURA, C
DEBATTISTI, A
BARBIERI, A
KRISTOF, J
机构
[1] UNIV EGYETEM 10,DEPT ANALYT CHEM,H-8201 VESZPREM,HUNGARY
[2] UNIV FERRARA,DIPARTIMENTO CHIM,I-44100 FERRARA,ITALY
关键词
D O I
10.1039/jm9940401255
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Concentration depth profiles of Ti-supported RuO2-TiO2 films, prepared by pyrolysis of ruthenium(III) chloride hydrate and titanium diisopropoxide bis-pentane-2,4-dionate, have been studied by secondary ion mass spectrometry (SIMS). The Ru-102:Ti-48 ion intensity ratio vs. the nominal concentration of ruthenium oxide was followed for samples obtained from precursors dissolved in different solvents. The dependence on bombarding time of ion intensity profiles for other species, such as O- (m/z = 16), OH- (m/z = 17), (TiO+)-Ti-46 (m/z = 62), (TiOH+)-Ti-50 (m/z = 63) was also studied. The mixed oxide films were characterized by cyclic voltammetry. The results of the combined research support the idea that microstructural and chemical impurities are concentrated in the outermost part of the film. This phenomenon seems to depend on the composition of the solvent used for the precursor salts.
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页码:1255 / 1258
页数:4
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