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Voltammetric studies of silane-modified SnO2 surfaces in selected aqueous and non-aqueous media by Neal R. Armstrong; V. Rogers Shepard Jr. is a Chemistry article available to read on EtoBox.

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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.

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Author

Neal R. Armstrong; V. Rogers Shepard Jr.

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0022-0728)

Published

1980

Language

EN

Field

Chemistry (Physical Sciences)