Modeling the surface phenomena in carbon paste electrodes by low frequency impedance and double-layer capacitance measurements
Impedance and capacitance studies have been performed with covalently coupled Glucose oxidase (GOD) enzyme, covalently coupled flavin adenine dinucleotide (FAD), reconstituted GOD enzyme and blank carbon paste electrodes to study the changes in the electrochemical interfacial properties. Impedance s...
| Veröffentlicht in: | Bioelectrochemistry and bioenergetics (Lausanne, Switzerland). - 1999. - 48(1999), 1 vom: 03. Feb., Seite 163-9 |
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| Format: | Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
1999
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| Zugriff auf das übergeordnete Werk: | Bioelectrochemistry and bioenergetics (Lausanne, Switzerland) |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't Enzymes, Immobilized Flavin-Adenine Dinucleotide 146-14-5 Carbon 7440-44-0 Glucose Oxidase EC 1.1.3.4 |
| Zusammenfassung: | Impedance and capacitance studies have been performed with covalently coupled Glucose oxidase (GOD) enzyme, covalently coupled flavin adenine dinucleotide (FAD), reconstituted GOD enzyme and blank carbon paste electrodes to study the changes in the electrochemical interfacial properties. Impedance studies were performed using a low frequency impedance technique and the electrochemical surface capacitance was measured by a pulse technique. We have attempted to fit the experimental values to an equivalent circuit model. The Randles' cell circuit with Warburg impedance modeled well the experimental values and the behavior of the enzyme electrodes. The individual components of the model were calculated and the parameters were explained. The blank paste electrode showed a constant phase element behavior |
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| Beschreibung: | Date Completed 14.06.1999 Date Revised 03.11.2019 published: Print Citation Status MEDLINE |
| ISSN: | 0302-4598 |