Journal
ELECTROANALYSIS
Volume 23, Issue 1, Pages 63-71Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.201000427
Keywords
Carbon nanofibers; Carbon nanotubes; Electrochemical transducer surfaces; Gold nanoparticles; Hybrid materials
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A nanohybrid electrochemical transducer surface was developed using carbon and gold nanomaterials. The strategy relayed on casting multiwalled carbon nanotubes or carbon nanofibers onto a screen-printed carbon electrode surface, followed by in situ generation of gold nanoparticles by electrochemical deposition of ionic gold, in a reproducible manner. These transducers, so fabricated, were characterized using both electrochemical and microscopic techniques. Biofunctionality was evaluated using the streptavidin-biotin interaction system as the biological reaction model. These platforms allow to achieve low detection limits (in the order of pmoles), are reproducible and stable at least for a month after their preparation, being a perfect candidate to be used as transducer of different sensor devices.
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