Review Article

Synthesis of Silica Nanoparticles by Sol-Gel: Size-Dependent Properties, Surface Modification, and Applications in Silica-Polymer Nanocomposites—A Review

Figure 9

PL spectra of different sizes (S7 = ~7 nm, S20 = ~21 nmm, S130 = ~130 nm, S400 = ~369 nm) of silica nanoparticles [30].
132424.fig.009