Surface chemistry study of RuO2/IrO2/TiO2 mixed-oxide electrodes
Article first published online: 6 JAN 2004
Copyright © 2003 John Wiley & Sons, Ltd.
Rapid Communications in Mass Spectrometry
Volume 18, Issue 3, pages 278–284, 15 February 2004
How to Cite
Barison, S., Daolio, S., Fabrizio, M. and Battisti, A. D. (2004), Surface chemistry study of RuO2/IrO2/TiO2 mixed-oxide electrodes. Rapid Commun. Mass Spectrom., 18: 278–284. doi: 10.1002/rcm.1326
- Issue published online: 6 JAN 2004
- Article first published online: 6 JAN 2004
- Manuscript Revised: 14 NOV 2003
- Manuscript Accepted: 14 NOV 2003
- Manuscript Received: 8 SEP 2003
DSA® metal oxide electrodes such as the RuO2/IrO2/TiO2 mixed system are widely studied for their excellent electrocatalytic activity. In order to understand their catalytic properties, the comprehension of the surface chemistry involved during electrochemical treatments is crucial. With this aim, RuO2/IrO2/TiO2 mixed-oxide electrodes having various noble metal contents were studied by means of secondary ion mass spectrometry (SIMS). In particular, cathodic and anodic polarization and O2 evolution reactions were carried out to test the electrode behaviour and SIMS analyses were performed after all these treatments. In this way, surface changes induced by electrochemical treatments and depending on electrode composition were widely investigated by SIMS, revealing, for example, the presence of hydration or preferential dissolution phenomena induced by electrochemical processing. Copyright © 2004 John Wiley & Sons, Ltd.