Figure 11.

(a) SWV voltammograms of the ITO-AuNP-TPh electrode architecture as indicated in the inserted sketch, after different cycles of SWV detection and regeneration. The measurements were recorded with a scan rate of 10 mV s⁻¹, in aqueous solution of KNO₃ (10⁻¹ M) and copper salt (CuSO₄, 10⁻⁶ M), (b) Current-time characteristic after the regeneration process of the same sensor based on the ITO-AuNP-TPh electrode architecture in the electrolyte aqueous solution of KNO₃ (10⁻¹ M) at potential of +0.4 V after each SWV experiment.