Influence of thermal treatment on the morphology of zinc oxide NPs synthesized by green method

Present research paper focuses on the morphological changes that occur in zinc oxide NPs due to thermal treatment that are synthesized using green synthesis technique. The method selected for NPs synthesis incorporates the utilization of zinc nitrate salt and aloe vera extract. X-ray diffraction technique is utilized to confirm the chemical structure of the as-synthesized material. Size and morphology studies were carried out by changing reaction and calcination temperatures. Reaction temperatures were varied by 4 degrees i.e., 64 degrees C, 68 degrees C and 72 degrees C, while calcination temperature variations were of hundred degrees, i.e., 470 degrees C, 570 degrees C and 670 degrees C. Scanning electron microscopy of samples at different reactions and calcination temperatures was also conducted. Particle size is determined using Debye Scherer formula. UV-Visible Spectroscopy was also opted to confirm zinc oxide at a wavelength of 368 nm. Results show that with increased calcination temperature there is a sharp morphological change from plates to hexagonal rods and from rods to spherical particles.