Abstract
We report a simple strategy for redox cycling between 2mm sized indium tin oxide (ITO) electrodes. The system was fabricated by putting a bare ITO electrode directly on top of another one coated with a 112nm thick silica nanochannel membrane (SNM). When sweeping the potential of the bare ITO electrode while holding that of the SNM-coated one at a constant reduction potential, the oxidation and reduction of reversible redox probes can be cycled via the nanochannels between the two adjacent electrodes. The cycling can significantly enhance the magnitude of the electrochemical current up to 29-fold. In addition, the redox cycling can be modulated by the probe charge and the ionic strength of the solution.
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