Electrooxidation of phenol by catalase immobilized on graphite electrodes.
Electrocatalytic properties of catalase (CAT) immobilized on graphite and soot to mediate electrooxidation of phenol have been investigated. The kinetic parameters--Km, k(s), deltaG*Ar and Z0 of the process studied were calculated. Conclusions on a probable mechanism of the biocatalytic and electrochemical process observed were drawn from the calculated values of activation and kinetic parameters. A quantitative UV-spectrophotometrical approach was used as an analytical tool. The electrochemical oxidation of phenol was examined with potentiodynamic and polarization curves' method.
Horozova
E
E
Department of Physical Chemistry, University of Plovdiv, Bulgaria. horozova@argon.acad.bg
Dimcheva
N
N
Jordanova
Z
Z
D002374:Catalase / Q000378:metabolism*; D004563:Electrochemistry / Q000379:methods; D004566:Electrodes; D004800:Enzymes, Immobilized / Q000378:metabolism; D006108:Graphite; D007700:Kinetics; D010084:Oxidation-Reduction; D010408:Penicillium chrysogenum / Q000201:enzymology; D019800:Phenol / Q000737:chemistry / Q000378:metabolism*; D013816:Thermodynamics
D004800:Enzymes, Immobilized; D019800:Phenol; D006108:Graphite; D002374:Catalase