Comparison of Glucose Oxidation by Crosslinked Redox Polymer Enzyme Electrodes Containing Carbon Nanotubes and a Range of Glucose Oxidising Enzymes. Issue 1 (5th December 2012)

• Record Type: Journal Article
• Authors: MacAodha, Domhnall; Ó Conghaile, Peter; Egan, Brenda; Kavanagh, Paul; Sygmund, Christoph; Ludwig, Roland; Leech, Dónal
• Is Part Of: Electroanalysis. Volume 25:Issue 1(2013:Jan.)
• Page Start: 94
• Page End: 100
• Publication Date: 2012-12-05
• Subjects: Electrochemical analysis -- Periodicals; Chemistry, Analytical -- Periodicals; Electrochemistry -- Periodicals; 543.4
• DOI: 10.1002/elan.201200536
• Languages: English
• ISSNs: 1040-0397

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The sugar oxidising enzymes glucose oxidase, glucose dehydrogenases (GDH) and cellobiose dehydrogenases (CDH) were co‐immobilised, in the presence of multiwalled carbon nanotubes, with osmium redox polymers. Under pseudo‐physiological conditions of 5 mM glucose, 150 mM NaCl, 37 °C, glucose oxidation current densities above 800 µA cm⁻² are obtained from films containing an [Os(4, 4′‐dimethyl‐2, 2′‐bipyridine)₂(poly‐vinylimidazole)₁₀Cl]⁺ redox polymer, redox potential 0.1 V vs. Ag/AgCl, and either glucose oxidase or FAD‐dependant GDH. Current produced by, and stability of, glucose‐oxidising half‐cells is compared in 100 mM glucose, with films containing CDHs proving most stable. Such results show promise for development of glucose‐oxidising enzymatic fuel cells.</p> </abstract>