Supramolecular immobilization of laccase on carbon nanotube electrodes functionalized with (methylpyrenylaminomethyl)anthraquinone for direct electron reduction of oxygen.
Chemistry
; 19(28): 9371-5, 2013 Jul 08.
Article
em En
| MEDLINE
| ID: mdl-23740491
ABSTRACT
An efficient way of immobilizing and wiring a large amount of laccase on non-covalently-functionalized multi-walled carbon nanotube (MWCNT) electrodes is reported. 1-(2-anthraquinonylaminomethyl)pyrene and 1-[bis(2-anthraquinonyl)aminomethyl]pyrene were synthesized and studied for their capability to non-covalently functionalize MWCNT electrodes and immobilize and orientate laccase on the nanostructured electrodes. This led to high-performance biocathodes for oxygen reduction by direct electron transfer with maximum current densities of (1±0.2) mA cm(-2). The performance of the resulting bioelectrodes could be doubled simply by using the bis-anthraquinone compound. The bioelectrodes show excellent stability over weeks and can thus be envisioned in enzymatic biofuel cells.
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Base de dados:
MEDLINE
Assunto principal:
Oxigênio
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Pirenos
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Antraquinonas
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Nanotubos de Carbono
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Lacase
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Enzimas Imobilizadas
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article