Graphene Modified Electrode for the Direct Electron Transfer of Bilirubin Oxidase

We fabricated graphene modified glassy carbon (Gr/GC) electrodes to enhance the direct electron transfer (DET) of bilirubin oxidase (BOD) by casting graphene-dispersed solutions with different concentrations. With a concentration of 2 µg µL−1, a large increase was observed in the reduction current a...

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Bibliographic Details
Published in:Denki kagaku oyobi kōgyō butsuri kagaku 2015/05/05, Vol.83(5), pp.332-334
Main Authors: SHIBA, Shunsuke, INOUE, Junji, KATO, Dai, YOSHIOKA, Kyoko, NIWA, Osamu
Format: Article
Language:English
Subjects:
Bilirubin Oxidase
Carbon
Direct Electron Transfer
Electrodes
Electron transfer
Glassy carbon
Graphene
Graphite
Nanocarbon
Nanostructure
Oxidase
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Summary:We fabricated graphene modified glassy carbon (Gr/GC) electrodes to enhance the direct electron transfer (DET) of bilirubin oxidase (BOD) by casting graphene-dispersed solutions with different concentrations. With a concentration of 2 µg µL−1, a large increase was observed in the reduction current at the BOD-modified Gr/GC electrode, and the value was 74 times that of a BOD-modified GC electrode (unmodified with graphene). Moreover, with graphene modification the capacitance increase was much less than with other carbon materials including carbon black and graphite powder. These results demonstrate that a graphene nanostructure is suitable for achieving the efficient DET of BOD.
ISSN:1344-3542
2186-2451
DOI:10.5796/electrochemistry.83.332