Fig. 1

Transmission electron microscope micrographs and zeta potential graphs of the prepared selenium nanoparticles of the Pediastrum boryanum extract. A TEM micrographs and size distributions for biosynthesized selenium nanoparticles by P. boryanum extract at a 200 nm magnification value. B Zeta potential of the prepared nano-selenium synthesized by P. boryanum extract. C X-ray diffraction (XRD) pattern of SeNPs