Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 21, Issue 13, Pages 4949-4953Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201405200
Keywords
amino-carbon nanotubes; bilirubin oxidase; electrochemical conditioning; enzyme immobilization; graphene
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Funding
- Iranian Nanotechnology Initiative
- Research Office of the University of Kurdistan
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The electrochemical conditioning of aminocarbon nanotubes (CNTs) on a graphene support in an alkaline solution is used to produce -NHOH as hydrophilic functional groups for the efficient immobilization of bilirubin oxidase enzyme. The application of the immobilized enzyme for the direct electrocatalytic reduction of O-2 is investigated. The onset potential of 0.81 V versus NHE and peak current density of 2.3 mAcm(-2) for rotating modified electrode at 1250 rpm, indicate improved biocatalytic activity of the proposed system for O-2 reduction.
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