Low-Temperature Growth of ZnO Nanoparticles by Using Autoclave

Zinc-oxide nanoparticles have been synthesized by using an easy, cheap, and rapid green method, namely, hydrothermal method with the assistance of stainless-steel autoclave at two different temperatures (100C and 150C), and their structural, optical, and chemical properties are investigated.XRD analysis identified the hexagonal wurtzite-type structure of ZnO nanoparticles as well as indicated that the crystallite size increased from 10.08 nm to 37 nm along with the elevated growth temperature from 100C to 150C.The transmittance spectra showed a sharp decrease in the transmittance after crossing a certain wavelength that was the strong evidence of cut-off wavelength for the transmittance of ZnO nanoparticles.The observed band gaps from the Tauc plot were of 3.60 eV and 3.05 eV at growth temperature 100C and…