Preparation and Characterization of Antimony-Doped Tin Dioxide Electrodes.Part 2.XRD and EXAFS Characterization

摘要

Several antimony and platinum doped tin dioxide electrodes supported on titanium have been characterized by X-ray diffraction (XRD)and X-ray absorption spectroscopy (EXAFS)techniques.Ti/SnO_2-Sb electrodes show a rutile-type nanostructure with a distorted unit-cell because of the substitution of the Sn(IV)ion by Sb(V).The presence of platinum on the electrode coating modifies the lattice parameters of the SnO_2 cell due to an amorphization of tin oxide layers.The structural modifications on the different electrode after anodic polarization-deactivation have been analyzed.