Synthesis of the zinc oxide nanoparticles by solution method / Mohd Nazrul Baqi Ramli

Zinc oxide (ZnO) nanoparticles were successfully synthesized by solution method of zinc acetate dihydrate and potassium hydroxide at low temperature of 60°C. The zinc oxide solution that obtained was purified by using washing process. The ZnO powders obtained were annealed at different temperatures (500°C, 600°C and 700°C). The effect of annealing temperature on the crystal structure, size and morphology of the ZnO nanoparticles were characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). XRD results show that all the peaks obtained were corresponding to the hexagonal wurtzite structure. Annealing temperatures influences the particle size and the morphology of the ZnO nanaoparticles. The particle size was increased from 37.6 nm to 55.3 nm as the temperatures increased. The increasing of temperatures changed the morphology of the ZnO nanoparticles from spherical shape to hexagonal shape.