Enzymatic electrodes nanostructured with functionalized carbon nanotubes for biofuel cell applications

Analytical and Bioanalytical Chemistry
Ewa NazarukRenata Bilewicz

Abstract

Nanostructured bioelectrodes were designed and assembled into a biofuel cell with no separating membrane. The glassy carbon electrodes were modified with mediator-functionalized carbon nanotubes. Ferrocene (Fc) and 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonate) diammonium salt (ABTS) bound chemically to the carbon nanotubes were found useful as mediators of the enzyme catalyzed electrode processes. Glucose oxidase from Aspergillus niger AM-11 and laccase from Cerrena unicolor C-139 were incorporated in a liquid-crystalline matrix-monoolein cubic phase. The carbon nanotubes-nanostructured electrode surface was covered with the cubic phase film containing the enzyme and acted as the catalytic surface for the oxidation of glucose and reduction of oxygen. Thanks to the mediating role of derivatized nanotubes the catalysis was almost ten times more efficient than on the GCE electrodes: catalytic current of glucose oxidation was 1 mA cm(-2) and oxygen reduction current exceeded 0.6 mA cm(-2). The open circuit voltage of the biofuel cell was 0.43 V. Application of carbon nanotubes increased the maximum power output of the constructed biofuel cell to 100 μW cm(-2) without stirring of the solution which was ca. 100 times more effic...Continue Reading

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Citations

Oct 25, 2012·Applied Biochemistry and Biotechnology·K H KucharzykJ Rogalski
Nov 15, 2011·Bioelectrochemistry·Krzysztof StolarczykRenata Bilewicz
Jan 13, 2015·Cellular and Molecular Life Sciences : CMLS·Alan Le GoffSerge Cosnier
May 22, 2018·Journal of Nanoparticle Research : an Interdisciplinary Forum for Nanoscale Science and Technology·Dorota MatyszewskaRenata Bilewicz
Jan 31, 2020·Chemistry : a European Journal·Solène GentilAlan Le Goff
Aug 15, 2021·Journal of Environmental Management·Sufia Ul Haque Inamuddin

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