Determination of Band Gap Energy of ZnO/Au Nanoparticles Resulting in Laser Ablation in Liquid

  • Mardiana Julita Department of chemistry, Faculty of Mathematics and Natural Science, Universitas Negeri Padang, Jl. Prof. Hamka, Padang 25131, Indonesia.
  • Muhandis Shiddiq Physics Research Center, National Research and Innovation Agency, Building 442 Puspiptek, South Tangerang, Banten 15314
  • Miftahul Khair Department of chemistry, Faculty of Mathematics and Natural Science, Universitas Negeri Padang, Jl. Prof. Hamka, Padang 25131, Indonesia.
Keywords: Band gap, nanoparticle, ZnO/Au, laser ablation, crystal.

Abstract

The synthesis of ZnO and ZnO/Au nanoparticles using the laser ablation method in liquid has been successfully carried out. Characterizing the optical properties of ZnO and ZnO/Au using a UV-Vis Spectrophotometer (Ocean Optic MAYA Pro 2000) measured in the wavelength range of 275-875 nm. The characterization results obtained are absorbance and band gap values of ZnO and ZnO/Au nanoparticles. This study found the absorbance values of ZnO nanoparticles at wavelengths 330 and 335 nm. After obtaining the absorbance value, the band gap value was analyzed for ZnO and ZnO/Au nanoparticles, respectively, 3.23 eV and 3.17 eV. The decrease in the band gap value in ZnO is due to the presence of Au in ZnO nanoparticles which can replace one of the lattices in the ZnO crystal structure.

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Published
2022-09-30
How to Cite
(1)
Julita, M.; Shiddiq, M.; Khair, M. Determination of Band Gap Energy of ZnO/Au Nanoparticles Resulting in Laser Ablation in Liquid. Indo. J. Chem. Res. 2022, 10, 83-87.
Section
Research articles