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Hydrodynamic voltammetry at membrane-covered electrodes
Bhatt, Anand I; Dryfe, Robert A
J. Electroanal. Chem. FIELD Full Journal Title:Journal of Electroanalytical Chemistry. 2005;584(2):131-140.
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Abstract
The modification of Pt electrodes with com. filtration membranes is used to study the interplay between soln. and membrane mass-transport in nonaq. soln. Two types of com. membrane, track-etched polyethylene terephthalate and gamma -Al2O3, are employed. Voltammetric and amperometric data are obtained under both hydrodynamic (rotating-disk) and stationary conditions, which is interpreted in terms of a pinhole model. Contrasting behavior is seen for the different membranes, which can be understood by consideration of the membrane thickness relative to the diffusion layer established in soln. In particular, overlapping diffusion behavior is obsd. for the much thinner polymer membranes under hydrodynamic conditions. [on SciFinder (R)]
Keyword(s)
Chemically modified electrodes (polyethylene terephthalate membrane-modified platinum and alumina membrane-modified platinum) ; Cyclic voltammetry; Diffusion (of p-chloranil in MeCN and in nitrobenzene); Membranes (hydrodynamic voltammetry at membrane-covered electrodes); Polyesters Role: DEV (Device component use), USES (Uses) (electrochem. redn. of p-chloranil on polyethylene terephthalate membrane-modified platinum electrode in MeCN and alumina membrane-modified platinum electrode in nitrobenzene) ; Pore size (of alumina membrane in p-chloranil electrochem. redn.); Reduction (of p-chloranil on polyethylene terephthalate membrane-modified platinum electrode in MeCN and alumina membrane-modified platinum electrode in nitrobenzene) ; Voltammetry (hydrodynamic; alumina membrane covered electrode voltammetry; at membrane-covered electrodes); hydrodynamic voltammetry membrane covered electrode; polyethylene terephthalate membrane covered electrode voltammetry
Bibliographic metadata
- CAN 144:12857 72-2 Electrochemistry Journal written in English. 1344-28-1 (Alumina); 7440-06-4 (Platinum); 25038-59-9 Role: DEV (Device component use), USES (Uses) (electrochem. redn. of p-chloranil on polyethylene terephthalate membrane-modified platinum electrode in MeCN and alumina membrane-modified platinum electrode in nitrobenzene); 118-75-2 (p-Chloranil) Role: RCT (Reactant), RACT (Reactant or reagent) (electrochem. redn. on polyethylene terephthalate membrane-modified platinum electrode in MeCN and alumina membrane-modified platinum electrode in nitrobenzene)