Binding Interaction and Morphology Studies of 3-Aminopropyltriethoxysilane Treated Nanoparticles

264Binding interaction studies of 3-aminopropyltriethoxysilane (3-APTES) with zinc oxide (ZnO), titania (TiO₂), zirconia (ZrO₂), alumina (Al₂O₃), silica (SiO₂), and iron oxide (Fe₂O₃) nanocrystals have been carried out by UV–visible and fluorescence spectral studies. 3-APTES acts as a host for ZnO and TiO₂ nanocrystals that enhance its fluorescence due to the electron transfer, whereas ZrO₂, Al₂O₃, SiO₂, and Fe₂O₃ do not affect the fluorescence intensity of 3-APTES. 3-APTES gets adsorbed on the surface of all nanoparticles and the surface treatment of nanoparticles by 3-APTES, its mechanism is discussed in detail. Scanning electron microscopy (SEM) and Fourier transform-infrared spectra (FT-IR) spectral studies are carried out to support the biding interaction between 3-APTES with nanoparticles.