Preparation of Semiconductor Nickel Oxide Nano hollow sphere; Their Modified Electrode for Electro Catalytic Reduction of Ethanol and Oxidation of Ascorbic Acid and Dopamine

Abstract

Abstract The crystalline semiconductor nickel oxide nano hollow sphere (NHS) is prepared by the template assisted solution phase growth method using carbon sphere. The NiO nano hollow spheres have diameters ranging from 400–500 nm in size, which is fabricated by NiO nanoparticles. The NiO nanoparticle sizes are ranges from 20–40 nm and their band gap energy is found 3.86 eV, it is used as P-type semiconductors. This NiO NHS is characterized by various analytical methods such as FT-IR spectra, X-ray diffraction pattern (XRD) and Energy Dispersive X-ray pattern (EDX). Then the surface and structure morphology are analysed by field emission scanning electron microscope (FESEM), High resolution scanning electron microscope (HRTEM). Our studies indicate that the NiO NHS modified glassy carbon electrode (GCE) exhibited excellent electrocatalysis for the determination and reduction of ethanol, and also oxidation of ascorbic acid (AA) and dopamine (Dop).