On the ability of ruthenium to stabilize polynuclear hexacyanometallate film electrodes

Citation
Tri. Cataldi et Ge. De Benedetto, On the ability of ruthenium to stabilize polynuclear hexacyanometallate film electrodes, J ELEC CHEM, 458(1-2), 1998, pp. 149-154
Citations number
56
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
ISSN journal
15726657 → ACNP
Volume
458
Issue
1-2
Year of publication
1998
Pages
149 - 154
Database
ISI
SICI code
Abstract
A novel procedure that yields extremely stable ruthenium-modified inorganic film electrodes is presented. The following prussian blue (PB) analogues w ere investigated: indium(III)-hexacyanoferrate (InHCF), nickel(II)-hexacyan oferrate (NiHCF), cobalt(II)-hexacyanoferrate (CoHCF), and iron(III)-hexacy anorutenate also known as ruthenium purple (RP). The process includes elect rochemical film deposition and subsequent voltammetric conditioning in a Ru (III)-containing solution at pH 2. Electrochemical and spectroscopic proper ties of each resulting modified film are better defined, redox and switchin g rates improved, and stability strongly enhanced. XPS supports the conclus ions that the incorporation of ruthenium imparts an extensive crosslinking between hydrate microparticles through dinuclear [Fe, Ru] oxo (-O-) and cya nide (-CN-) bridges. (C) 1998 Elsevier Science S.A. All rights reserved.