Berlin 2024 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 5: Optical Properties I
HL 5.4: Vortrag
Montag, 18. März 2024, 10:15–10:30, EW 561
Optical and Structural Properties of Zinc Oxide Nanoparticles using the Leaf Extract of Silybum marianum (Milk Thistle) — •Ahed AL-Faouri1, Mahmoud Abu-Kharma2, and Mahmoud Hatem3 — 1Al-Ahliyya Amman University — 2Al-Balqa Applied University — 3Al-Balqa Applied University
This study utilized the leaf extract of Silybum marianum (Milk thistle), as an effective bio-reductant, stabilizer, and capping agent for the synthesis of zinc oxide nanoparticles (ZnO-NPs) at ambient temperature. The chosen approach was not only simple and efficient but also demonstrated low-cost, non-toxic, and environmentally friendly characteristics, aligning with green synthesis principles. ZnO -NPs were detected and characterized using a Fourier transform infrared spectroscopy (FTIR), UV-Visible (UV-Vis) spectroscopy, X-ray powder diffraction (XRD), and scanning electron microscope (SEM). UV-Vis spectroscopy showed a sharp peak at 373 nm, and the energy band gap was measured to be approximately 2.77 eV. Furthermore, the UV-Vis analysis was utilized to quantify and interpret a range of optical properties. These properties include the absorption coefficient (α), skin depth (δ), optical density (Dopt), extinction coefficient (k), optical conductivity (σopt), and the optical dielectric constant (ε). This thorough exploration of the optical and structural characteristics of the CuO-NPs aids in comprehending their response to light interaction, thereby opening avenues for their practical applications across various fields.
Keywords: Green synthesis; Silybum marianum (Milk thistle); nanoparticles; zinc oxide; Aqueous extract