Hydrogenase-coated carbon nanotubes for efficient H2 oxidation.

Alonso-Lomillo, M Asunción; Rüdiger, Olaf; Maroto-Valiente, Angel; Velez, Marisela; Rodríguez-Ramos, Inmaculada; Muñoz, F Javier; Fernández, Víctor M; De Lacey, Antonio L · Nano Lett · 2007

basic_science · Level V

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Abstract

Multiwalled carbon nanotubes grown on gold electrodes manufactured by microtechnology techniques have been used as a platform for oriented and stable immobilization of a Ni-Fe hydrogenase. Microscopic and electrochemical characterization of the system are presented. High-density currents due to H2 oxidation electrocatalysis, stable for over a month under continuous operational conditions, were measured. The functional properties of this nanostructured hydrogenase electrode are suitable for hydrogen biosensing and biofuel applications.

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