Figure 3: (a) and (b) SEM and TEM images of purified SeNPs showing the shape, size, and non-aggregating nature of the particles. (c) EDX spectra of SeNPs showing the signature peaks of selenium, Lα, Kα, and Kβ (in red). There are no other elements present except Cl (pink), C (blue), O (green), and N (yellow), which are assumed to be from the X-ray beam channel or elements associated to NPs.