Abstract
Voltammetric studies in selected aqueous and non-aqueous media were conducted for a series of silane-modified SnO2 electrodes which had been further modified with a variety of metal phthalocyanines and metal cations. It is shown that tetrasulfonated, transitionmetal phthalocyanines can be both adsorbed and covalently attached to silane-modified surfaces where the silane has a coordinating ligand functionality such as a primary or secondary amine. It is further shown that the presence of the silane on the SnO2 surface causes the appearance of a reversible voltammetric process following exposure of the surface to solution cation species. This reversible voltammetric wave is hypothesized to be due to the reduction of a surface bound Sn(IV) species to Sn(II) in a strongly hydroxylated environment.
Original language | English (US) |
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Pages (from-to) | 253-265 |
Number of pages | 13 |
Journal | Journal of Electroanalytical Chemistry |
Volume | 115 |
Issue number | 2 |
DOIs | |
State | Published - Dec 23 1980 |
Externally published | Yes |
ASJC Scopus subject areas
- Analytical Chemistry
- General Chemical Engineering
- Electrochemistry