Low-energy bead-milling dispersions of rod-type titania nanoparticles and their optical properties

摘要: Abstract The low-energy dispersion of nanomaterials in the bead-milling process is examined. effect milling parameters including bead size, rotation speed, and time on dispersibility fragile rod-type titanium dioxide nanoparticles investigated. From experimental data obtained for morphological, optical, crystalline properties dispersed nanoparticles, an unbroken primary particle colloidal suspension was only by conducting using optimum parameters. Deviation from conditions (i.e., higher speed larger size) causes re-agglomeration phenomena, produces smaller ellipsoidal particles, worsens crystallinity physicochemical properties, especially refractive index, nanoparticles. We also found that decreases index induced are related to collisions forming broken particles amorphous phase surface particles. In addition, present method prospective industrial applications, confirming almost no impurity (from breakage beads) apparent final product.