Abstract
Investigation of the influence of ZnO-doping as well as the nanostructural morphology on the electrochemical capacitance of TiO2 was studied in this manuscript. The nanofiber ZnO-doped TiO2 was prepared by first electrospinning of a colloidal composed of poly(vinyl acetate), N, N-dimethylformamide, titanium isopropoxide and zinc nanoparticles. Then, the electrospun nanofibers were calcined at 600 degrees C. In Addition, the morphology and chemical structure of the introduced ZnO-doped TiO2 nanofibers were characterized by means of scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Furthermore, the chemical composition was investigated and characterized by X-ray diffraction (XRD). Moreover, the electrochemical behavior was characterized by means of cyclic voltammetry (CV) in 1 M KOH aqueous solution. The study concluded that addition of Zn NPs did not affect the electrospun nanofibers morphology; however broken nanofibers are obtained after calcination when Zn NPs content increases to 0.2 g. Moreover, it was found that doping the titanium oxide nanofibers by ZnO has distinct positive influence on the specific capacitance as increasing ZnO leads to enhance the electrochemical capacitance. Overall, the present study introduces cheap, effective and simple strategy to enhance the electrochemical capacitance properties of the metal oxides.