ENZYME ELECTRODES WITH PTFE MODIFIED CARBON BLACK MEDIATOR MATRIX AND THEIR APPLICATION IN GLUCOSE BIOSENSORS

Autor:	I. Iliev, A. Kaisheva, P. Atanasov, S. Gamburzev
Rok vydání:	1992
Předmět:	Materials science biology chemistry.chemical_element Carbon black engineering.material Matrix (chemical analysis) Adsorption chemistry Coating Chemical engineering Electrode engineering biology.protein Glucose oxidase Composite material Biosensor Carbon
DOI:	10.1016/b978-1-85617-161-8.50036-7
Popis:	Publisher Summary This chapter focuses on enzyme electrodes with PTFE modified carbon black mediator matrix and their application in glucose biosensors. PTFE modified carbon blacks are prepared as a powder material by a special technology that allows the use of different carbon blacks and a controlled carbon black/PTFE ratio. This material possesses an electronic conductivity combined with hydrophobic surface properties, and enzymes can be immobilized on it by adsorption. Mediators are mixed with the PTFE modified carbon blacks to form a powdered composite material. Glucose oxidase electrode is prepared by coating of the porous matrix from composite material with enzyme solution and further evaporation of the solvent. The use of a PTFE modified carbon black-mediator matrix coated with enzyme allows standardizing the production of biosensors with reproducible performance.
Databáze:	OpenAIRE
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