Comparison and Characterization of Green Synthesized Silver Oxide Nanoparticles Using Ziziphus spina-christi plant extract and AgO NPs by Femtosecond Laser Ablation Technique

ABSTRACT: Several techniques have been used, including green manufacturing and femtosecond laser ablation, to synthesize silver oxide nanoparticles (AgO NPs). In this study, low-cost, environmentally friendly green nanomaterials were synthesized and compared to femtosecond laser ablation. Characterization studies demonstrated that the green nanosilver mixture provided a uniform and controlled distribution of silver nanoparticles within the polymer matrix without the addition of any other stabilizers. Transmission electron microscopy (TEM) studies revealed that the size of the green silver nanoparticles was around two times larger than the laser-absorbed method. The interactions between the silver nanoparticles and the mixture were characterized by changes in the intensity of the vibrational peaks and spectral positions. X-ray diffraction (XRD) confirmed the structural modification within the chitosan matrix resulting from the inclusion of silver nanoparticles. Tilt angles were constant for green methods. Absorption changes were studied using ultraviolet-visible (UV-Vis) spectroscopy, and the optical band gap was calculated. The nanosilver exhibits a broad peak at 450 nm, as well as an extract-associated peak at 280 nm, while the silver nanoparticles in the mixture exhibit a broad peak at 427 nm. These results reveal significant differences in the properties of product nanoparticles using the green method and femtosecond laser ablation technique.