Enzymatic glucose biosensor based on manganese dioxide nanoparticles decorated on graphene nanoribbons
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Stanković, Dalibor M.
Article (Published version)
© 2018 Elsevier B.V.
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A disposable glucose biosensor was prepared using nanoparticles of MnO2 decorated on graphene nanoribbons by surface modification with drop coating with the GOx and Nafion®. Tested material was synthesized and characterized using several techniques. The biosensor could be operated under physiological conditions (0.1 M phosphate buffer, pH 7.4) and exhibited good reproducibility and stability. The linear range for the amperometric response of the biosensor at operating potential of +0.50 (versus Ag/AgCl) was from 0.1 to 1.4 mmol/l, with a detection limit of 0.05 mmol/l and high sensitivity of 56.32 μA/mmol cm2. Developed method was tested toward glucose quantification in real samples with satisfactory accuracy and precision.
Keywords:glucose biosensor / graphene nanoribbons / manganese dioxide / screen printed electrodes
Source:Journal of Electroanalytical Chemistry, 2018, 823, 610-616
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