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The effect of varying concentrations of acetic acid on the structural and optical properties of semiconductor zinc oxide (ZnO) nanoparticles synthesized via the sol–gel method
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The effect of varying concentrations of acetic acid on the structural and optical properties of semiconductor zinc oxide (ZnO) nanoparticles synthesized via the sol–gel method
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Journal Article
The effect of varying concentrations of acetic acid on the structural and optical properties of semiconductor zinc oxide (ZnO) nanoparticles synthesized via the sol–gel method
2024
Overview
The study presents an investigation into the structural, morphological, and optical properties of nano-sized ZnO particles synthesized via the sol–gel method. We conducted a comprehensive examination of various operating parameters, including the choice of additive (citric or acetic acid) and the drying method. Our results indicate that the addition of acetic acid and drying with low-power microwave radiation yield high-quality nanoparticles. X-ray Diffraction (XRD) analysis revealed that the nanoparticles crystallize in the Würtzite hexagonal phase, even at high concentrations of acetic acid, without any indication of secondary phases or clusters, confirming the single-phase nature of the samples. Crystal structure analysis, performed using X-ray peak broadening and Williamson-Hall analysis, elucidated the contributions of crystallite size and lattice deformation to the broadening of peaks in the nanoparticles. Furthermore, Fourier Transform Infrared Spectroscopy measurements were employed to evaluate the chemical composition and phonon properties of the particles. Scanning Electron Microscopy images demonstrated a change in shape and size of the zinc oxide nanoparticles with increasing acetic acid concentration. Spectrophotometric measurements of optical properties revealed high reflectance and absorption in the visible range, with no significant variation in band gap energy.
Publisher
Springer US,Springer Nature B.V
