Controllably annealed CuO-nanoparticle modified ITO electrodes: Characterisation and electrochemical studies

In this paper, we report a facile and controllable two-step approach to produce indium tin oxide electrodes modified by copper(II) oxide nanoparticles (CuO/ITO) through ion implantation and annealing methods. After annealing treatment, the surface morphology of the CuO/ITO substrate changed remarkably and exhibited highly electroactive sites and a high specific surface area. The effects of annealing treatment on the synthesis of CuO/ITO were discussed based on various instruments' characterisations, and the possible mechanism by which CuO nanoparticles were generated was also proposed in this work. Cyclic voltammetric results indicated that CuO/ITO electrodes exhibited effective catalytic responses toward glucose in alkaline solution. Under optimal experimental conditions, the proposed CuO/ITO electrode showed sensitivity of 450.2 mu A cm(-2) mM(-1) with a linear range of up to similar to 4.4mM and a detection limit of 0.7 mu M (SAN =3). Moreover, CuO/ITO exhibited good poison resistance, reproducibility, and stability properties. (C) 2016 Elsevier B.V. All rights reserved.