Targetting redox polymers as mediators for laccase oxygen reduction in a membrane-less biofuel cell

被引：134

作者：

Barrière, F

Ferry, Y

Rochefort, D

Leech, D ^{[1
]}

机构：

[1] Natl Univ Ireland, Dept Chem, Galway, Ireland

[2] Univ Rennes 1, Inst Chim, CNRS, UMR 6510, F-35042 Rennes, France

[3] Univ Montreal, Dept Chim, Montreal, PQ H3C 3J7, Canada

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2004年 / 6卷 / 03期

基金：

加拿大自然科学与工程研究理事会;

关键词：

biofuel cell; biocatalyst; laccase; mediator; osmium redox polymer; oxygen reduction;

D O I：

10.1016/j.elecom.2003.12.006

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Electrodes modified with co-immobilized redox enzymes and redox polymers can be used to form membrane-less biofuel cells. In this communication, we report on our initial studies of a membrane-less biofuel cell concept using an osmium-based redox polymer for laccase-mediated reduction of oxygen coupled to glucose oxidase-mediated oxidation of glucose. We then present a thermodynamic examination of mediators of laccase oxygen reduction, and stemming from this, target two redox polymers of potential use, an osmium-based redox polymer (E-0' + 0.40 V vs. Ag/AgCl) and a ruthenium-based redox polymer (E-0' + 0.63 V vs. Ag/AgCl). The former shows promise for use in membrane-less biofuel cell cathodes, whilst the latter's redox potential is too high to be an effective mediator of oxygen reduction by the Trametes versicolor laccase used in this study. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：237 / 241

页数：5

共 46 条

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