Proceedings of International Conference on Applied Innovation in IT  ·  2026/03/31  ·  Vol. 14  ·  Issue 1  ·  pp. 819–829
Gold Nanoparticles Synthesized via Pulsed Laser Ablation: Physical and Biological Characterization
Sabah Anwer Salman, Salma Salman Abdullah, Waleed Hatem Namous and Faisal Laith Ahmed
📄 Download PDF DOI: 10.25673/123643
Abstract
Gold nanoparticles (AuNPs) were produced via pulsed laser ablation using a syzygium aromaticum solution. The varying pulse rates employed were 500, 750, and 1000, with an extract in which eugenol serves as a reducing agent. The synthesized AuNPs were analyzed using ED-XRF, XRD, UV–VIS spectroscopy, and Transmission electron microscopy TEM. ED-XRF analysis revealed that the utilized gold alloy exhibited a high purity of approximately 98.66%. XRD studies showed that the gold nanoparticles feature a face-centered cubic (FCC) crystal structure, with a predominant crystalline orientation of (111). The optical analysis of samples was conducted using a UV-VIS spectrophotometer, which indicated a surface plasmon resonance (SPR) peak at a wavelength of 520 nm. Additionally, the energy gap values increased to 2.05 eV for AuNPs and 2.73 eV for S. aromaticum. TEM images confirmed the presence of nanoparticles at the nanoscale. Biological activity showed a weak effect of nano-solutions on bacterial species (S. aureus, K. pneumonia, P. aeruginosa and A. baumannii).
Keywords
Gold Nanoparticles Syzygium Aromaticum Laser Ablation S. Aureus K. Pneumonia P. Aeruginosa A. Baumannii.
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