Hydrogenase-coated carbon nanotubes for efficient H2 oxidation

Nano Lett. 2007 Jun;7(6):1603-8. doi: 10.1021/nl070519u. Epub 2007 May 10.

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.

Publication types

  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adsorption
  • Crystallization / methods*
  • Electrochemistry / instrumentation
  • Electrochemistry / methods*
  • Hydrogen / chemistry*
  • Hydrogenase / chemistry*
  • Hydrogenase / ultrastructure
  • Macromolecular Substances / chemistry
  • Materials Testing
  • Microelectrodes*
  • Molecular Conformation
  • Nanotechnology / instrumentation
  • Nanotechnology / methods*
  • Nanotubes, Carbon / chemistry*
  • Nanotubes, Carbon / ultrastructure
  • Oxidation-Reduction
  • Particle Size
  • Protein Binding
  • Surface Properties

Substances

  • Macromolecular Substances
  • Nanotubes, Carbon
  • Hydrogen
  • Hydrogenase