Nanoporous electrodes have shown promise in electrochemical sensing because of their high electrochemically active surface area (ECSA) and porous nanostructure, which can lead to enhanced sensitivity, lower detection limits, and the ability to reduce the effects of biofouling on the electrochemical response. Our group has recently made two classes of nanoporous electrodes using both top down and bottom up strategies. TiN nanorod electrodes were made by glancing angle deposition and decorated with nanoparticles to improve their electrochemical response. We have also fabricated high surface area nanoporous platinum (NPPt) electrodes by using a bottom-up electrodeposition approach. The fabricated NPPt electrodes show a bicontinuous nanoporous structure while the TiN electrodes show a rod-like nanostructure with nanometer sized gaps between the rods. Using both cyclic voltammetry and open-circuit potential measurements, the electrochemical response of these electrodes to uric acid, ascorbic acid and other biologically relevant species was studied in solutions containing common biofouling agents. In this presentation, these results will be discussed.

Nanoporous electrodes for bioanalytical applications

254th National Meeting (2017)

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