Investigation of In Vitro Drug Release from Porous Hollow Silica Nanospheres Prepared of ZnS@SiO₂ Core-Shell

Figure 7

FT-IR spectra of (a) bare ZnS nanoparticles, (b) ZnS@SiO₂ core-shell nanocomposites, and (c) hollow SiO₂ nanostructures.