Sol-gel technique was used for the fabrication of a renewable carbon ceramic electrode (CCE)
modified with nickel-catechol complex (Ni-CA). The complex was deposited on the surface of a
multiwalled carbon nanotubes-CCE by potential cycling in the range of 0.0-0.8 V (vs.saturated
calomel electrode, SCE). Ni-CA showed electrocatalytic activity towards the redox reaction of
gabapentin. A linear relationship of anodic peak current with gabapentin concentration was observed
in a range of 1.25-63.23 μmol L
-1
with a limit of detection of 0.5 μmol L-1
. The electrode response
towards gabapentin was quite reproducible and a long-term stability of the electrode (more than
2 months) was observed. The electrode was successfully applied to the determination of gabapentin
in pharmaceutical preparations.
