We report the fabrication of
screen printed graphite microband
electrodes which are electrochemically characterised and critically explored with the electroanalytical applications for the sensing of NADH and nitrite. The
screen printed graphite band
electrodes consist of graphite microbands
printed upon a flexible plastic substrate which are 10 mm in length and 100 渭m in width. The graphite microbands have a critical microscopic dimension imparting microelectrode behaviour whilst the length yields an increase in the current output. Electroanalytical characterisation with the electrochemical detection of NADH and nitrite reveal that experimental limits of detection (3
蟽) of 0.48 and 0.05 渭M respectively are possible. The
screen printed graphite band
electrodes are benchmarked against
screen printed graphite macro
electrodes as well as graphite ultramicrobands, where in terms of current density, the band
electrodes exhibit a greater response over the former, but not the latter. However, in terms of analytical reproducibility, the band
electrodes exhibit an improved response over that of the graphite ultra-micro
electrodes.
The mass production of disposable microband electrodes holds great promise in electrochemistry, particularly as a base transducer for utilisation in electroanalytical sensing where the benefits of the microscopic domain of the band electrode imparting improvements in the analytical performance can be realised.