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Bioelectrocatalytic dioxygen reduction at carbon nanotubes – silicate composite film modified electrode
|Martin Jönsson-Niedziółka 1, Katarzyna Szot 1, Jerzy Rogalski 2, Katarzyna A. Karnicka 3, Paweł J. Kulesza 3, Marcin Opallo 1|
1. Polish Academy of Sciences, Institute of Physical Chemistry, Kasprzaka 44/52, Warszawa 01-224, Poland
A tin-doped indium oxide electrode was shown to serve as a suitable support for a carbon nanotube – silicate composite matrix with encapsulated extracellular laccase from Cerrena unicolor. The mediator capable to shuttle electrons between electrode and protein was adsorbed 2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonate) from aqueous solution. In deareated solution this electrode exhibits peak shaped voltammetric signal corresponding to the one-electron electrooxidation -reduction process of the surface confined mediator. In dioxygen saturated solution bioelectrocatalytic dioxygen reduction is observed with this electrode.
Presentation: Poster at SMCBS'2007 International Workshop, by Martin Jönsson-Niedziółka
See On-line Journal of SMCBS'2007 International Workshop
Submitted: 2007-09-04 15:09 Revised: 2009-06-07 00:44