To investigate the difference of the PVP−solvent solutions,
we measured the hydrodynamic size distribution of the PVP
solution in EtOH, 1-propanol, and 1-pentanol using dynamic
light scattering. As shown in Figure 10, the hydrodynamic
diameters of the PVP solutions increased from EtOH to 1-
propanol and 1-pentanol. Even the dynamic light scattering
results cannot demonstrate the shape of the formed droplets;
the increase in the hydrodynamic diameters indicated the
possible shape change when the solvent was varied. From this
point of view, the type of solvent will impact the morphology of
the resulting silica nanomaterials