DOI: https://doi.org/10.22184/1993-8578.2023.16.5.288.296

This paper presents the results of study of selenium nanoparticles reduction process of using various reducing agents. Nanoparticles were obtained by chemical reduction in an aqueous medium, selenious acid was used as a precursor, and cocamidopropyl betaine was chosen as a stabilizer. The average hydrodynamic radius of the samples was studied by photon correlation spectroscopy, and the ζ potential was studied by acoustic and electroacoustic spectroscopy. It has been established that selenium nanoparticles obtained using ascorbic acid have an average hydrodynamic radius of 12.93 nm, with sodium borohydride – 23.16 nm, with timurea – 21.85 nm. Samples obtained using hydrazine, sodium thiosulfate, and L-cysteine coagulated for some time after synthesis, while with reducing agents such as urotropine, sodium citrate, glucose, and urea, selenium nanoparticles were not formed. The optimal ratios of the precursor and reducing agent were determined, and the dependences of the average hydrodynamic radius of the obtained samples were obtained. An analysis of the obtained results showed that the optimal reducing agent for obtaining selenium nanoparticles is ascorbic acid with a precursor to reducing agent ratio of 1:4 and an average hydrodynamic radius of 14 nm.