Fig. 2

(a) The particle size distribution pattern determined by laser light scattering method using a Zetasizer MS2000, (b) particle size distribution by counting 400 NPs on each TEM micrograph, (c) The spherical shape of MTF@As nanoparticles revealed by SEM micrograph, and (d) The spherical shape of MTF@As nanoparticles revealed by TEM micrograph