Optical Properties of bio-engineered nano-scaled Y₂O₃ particles via <i>Hyphaene thebaica</i> natural extract

Abstract In this study, the synthesis of yttrium oxide (Y 2 O 3 ) nanoparticles was made using an eco-friendly methodology with a natural extract. The fruit of doum ( Hyphaene thebaica ) was used as both an effective chelating as well as a stabilizing agent for synthesizing Y 2 O 3 nanoparticles (NPs). Once the NPs were obtained, diverse characterization techniques were used to determine the physicochemical and optical properties of the Y 2 O 3 NPs; The Optical bandgap was calculated by employing the Kubelka-Munk function and was found to be ~ 5.65 eV, the Fourier Transform Infrared spectrum of the Y 2 O 3 NPs shows the presence of the Y–O–Y and O–Y–O stretching vibrational modes in the synthesized Y 2 O 3 nanoparticles bonds at 437 and 580 cm −1 , XRD results indicated that the Y 2 O 3 NPs exhibit a body-centered cubic structure with average size approximately 30 nm, While TEM images revealed that the NPs had a quasi-spherical structure, the nanoparticles present a quasi-spherical morphology with sizes ranging from 5 nm to 15 nm, indicating an influence of the concentration of the H. thebaica extract in the synthesis process of Y 2 O 3 NPs.