Record number :
Title of article :
Hydrodynamic voltammetry at membrane-covered electrodes
Author/Authors :
Bhatt، نويسنده , , Anand I. and Dryfe، نويسنده , , Robert A.W.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Pages :
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Abstract :
The modification of platinum electrodes with commercial filtration membranes is used to study the interplay between solution and membrane mass-transport in non-aqueous solution. Two types of commercial membrane, “track-etched” polyethylene terephthalate and γ-Al2O3, are employed. Voltammetric and amperometric data is obtained under both hydrodynamic (rotating-disc) and stationary conditions, which is interpreted in terms of a pinhole model. Contrasting behaviour is seen for the different membranes, which can be understood by consideration of the membrane thickness relative to the diffusion layer established in solution. In particular, overlapping diffusion behaviour is observed for the much thinner polymer membranes under hydrodynamic conditions.
Keywords :
Rotating disc electrode , Membrane-covered electrode , Voltammetry , Hydrodynamic amperometry
Journal title :
Journal of Electroanalytical Chemistry
Serial Year :
Link To Document :