Zinc oxide and Zinc oxide Nanoparticles Carbon Past Ion Selective Electrode: A Cyclic Voltammetry Comparison Study

Abstract

Abstract Alternative, low-cost, high-Precision, and selectivity methods Anew homework ion selective electrodes ISE for zinc metal determination and comparison between size particles in sensitive and selectivity. A hydrothermal method used to prepare zinc oxide nano particles, and use Scanning electromagnetic method TEM for morphology and determined size of ZnO-NPs. and study the redox of Zn+2 in pharma drugs by cyclic voltammetry. (Epa - Epc) > 200 mV, refer to the quasi-reversible mechanism. Physical and chemical properties was study for the electrode in the range of temperature 10-40 °C. voltammograms data showed the negative shift with temperature increased, Diffusion coffining 1.01 x 10-7 was calculated from Sevcik-Randles equation. Rate constant Kox (oxidation) was determined 0.43 ×10-7 and reduction equal 0.31×10-7. The peak current of zinc concentration in the range of 1.0-10.0 ppm showed increased linearly.