UV-VIS characterization of selenium nanoparticles synthesized from Citrus sinensis seed extract

Abstract

The advancement of eco-friendly nanotechnology aligns with the global vision of harnessing science, innovation, and technology for sustainable development. In this study, selenium nanoparticles were synthesized via a green route employing aqueous Citrus sinensis seed extract as a reducing and stabilizing agent, offering a sustainable aand biocompatible alternative to conventional chemical synthesis methods. There was a colour change from pale yellow to brick red, indicting the reduction of selenium ions SeO32- to elemental selenium nanoparticles Se0. UV-Visible spectroscopic analysis was conducted to confirm the formation of selenium nanoparticles and also evaluate the optical properties, the UV-VIS absorption spectra revealed a characteristic peak at 264nm, indicating successful formation of selenium nanoparticle due to the excitation of surface plasmon vibrations. The distinct peak also suggests the effective role of Citrus sinensis seed phytochemicals in selenium nanoparticle (SeNPs) stabilization. This green synthesis approach not only minimizes the use of hazardous chemicals but also enhances biocompatibility, making the SeNPs suitable for biomedical, antioxidant, and environmental applications. UV-VIS characterization therefore, serves as a rapid and efficient analytical tool to monitor nanoparticle synthesis and optimize parameters for targeted sustainable applications. 

KEYWORDS: Citrus sinensis, absorption spectra, selenium, nanoparticles, green route