ENHANCED STRUCTURAL AND OPTICAL PROPERTIES OF ZnO NANOPARTICLES UNDER DIFFERENT SUBSTITUTIONS SYNTHESIZED BY CO-PRECIPITATION TECHNIQUE
Authors:   Department of Mechanical, Mechatronics, and Manufacturing Engineering (New Campus KSK), University of Engineering and Technology, Lahore, Pakistan, SATTAR A. , ALI K. ,   Nano-optoelectronics Research Laboratory, Department of Physics, University of Agriculture Faisalabad, 38040 Faisalabad, Pakistan, SAJJAD M. ,   Nano-optoelectronics Research Laboratory, Department of Physics, University of Agriculture Faisalabad, 38040 Faisalabad, Pakistan, SHOUKAT M. Z. ,   Department of Mechanical, Mechatronics, and Manufacturing Engineering (New Campus KSK), University of Engineering and Technology, Lahore, Pakistan, ISHTIAQ U. ,   Department of Mechanical, Mechatronics, and Manufacturing Engineering (New Campus KSK), University of Engineering and Technology, Lahore, Pakistan, REHMAN S. U. ,   Department of Mechanical, Mechatronics, and Manufacturing Engineering (New Campus KSK), University of Engineering and Technology, Lahore, Pakistan, RIZWAN A. ,   Department of Chemical, Polymer and Composite material Engineering (New Campus KSK) University of Engineering and Technology Lahore, Pakistan, SUHALE A. ,   Nano-optoelectronics Research Laboratory, Department of Physics, University of Agriculture Faisalabad, 38040 Faisalabad, Pakistan, ARSHAD K. ,   Department of Mechanical, Mechatronics, and Manufacturing Engineering (New Campus KSK), University of Engineering and Technology, Lahore, Pakistan, NOUMAN C. M. ,   Department of Mechanical, Mechatronics, and Manufacturing Engineering (New Campus KSK), University of Engineering and Technology, Lahore, Pakistan, MUJAHID A. B. ,   Department of Mechanical, Mechatronics, and Manufacturing Engineering (New Campus KSK), University of Engineering and Technology, Lahore, Pakistan, SYAM M. ,   Department of Mechanical, Mechatronics, and Manufacturing Engineering (New Campus KSK), University of Engineering and Technology, Lahore, Pakistan, JOIYA M. M. ,   Department of Biomedical engineering (New Campus KSK), University of Engineering and Technology, Lahore, Pakistan
Published: March 2023

Nano-crystalline particles of zinc oxide having different concentration (0.001, 0.002, 0.003) were effectively synthesized via Co-precipitation technique. Increasing the concentration of Zinc, lattice parameter (a) and (c) of crystal lattice increases according to Vegard's Law. Phase identification of ZnO nanoparticle was analyzed via X-ray diffraction (XRD) and absorbance was measured by ultraviolet visible (UV) spectroscopy. Increment of band gap energy values by increasing concentration of Zinc (Zn2+) ions. An absorbance spectrophotometer was utilized to measure the amount of light passing through differently zinc concentrated solutions. The Absorption peak at 370nm was observed. When concentration increases, peak of absorption displays a progressive red shift. The subsequent redshifts, as stated earlier, are consistent with the observed variance in NP sizes. Fourier transform infrared (FTIR) spectra of zinc nanoparticles were investigated in the spectral region of 4000-500 cm-1 . ZnO samples morphology were also analyzed using scanning electron microscope (SEM). Particles with identical and significant tendency of metallic cluster were observed throughout the samples.