Single Nanotube Voltammetry: Current Fluctuations Are Due to Physical Motion of the Nanotube.

ABSTRACT: Nanoimpacts of single palladium-coated carbon nanotubes on a gold substrate are studied to elucidate the origins of the fluctuation in the current-time response of the hydrogen oxidation reaction mediated at its surface. The chronoamperometric and cyclic voltammetric responses from a single nanotube immobilized on the gold surface were compared to analogous data on a carbon substrate to determine the possible influence of substrate material on the nanotube-electrode electrical contact. No significant distinction between the gold and carbon was found, indicating in light of the considerable differences in the substrate materials' intrinsic electronic structures that it is the nanomotion of a nanotube at the electrode surface which is likely responsible for the observed current modulation. T

SUBMITTER: Hodson H 

PROVIDER: S-EPMC4819518 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature