Gap. Zaldivar et al., STRUCTURE AND ELECTROCHEMICAL PROPERTY OF THE COBALT(II) HEXACYANOFERRATE COMPLEX IMMOBILIZED ON SN(IV) OXIDE-COATED ON SILICA-GEL SURFACE, Electrochimica acta, 39(1), 1994, pp. 33-36
The complex cobalt hexacyanoferrate was immobilized onto a silica gel
surface, chemically modified with tin(IV) oxide. The formal potential
of the attached electroactive species was dependent on the supporting
electrolyte used: NaNO3 = 0.39 V, KNO3 = 0.50 V and NH4NO3 = 0.53 V. A
Nernstian behavior was observed for KNO3 and NH4NO3 and a quasi-Nerns
tian one for NaNO3 when they were used as the supporting electrolyte.
The LiNO3 did not generate a reversible current peak since the hydrate
d ionic radius is larger than the zeolite-type cavity of the surface m
ixed valence complex.