| 초록 |
TiO2 has been recognized as one of the most effective metal oxide materials due to its high photocatalytic efficiency, photochemical stability, non-toxic nature, and low cost. Especially TiO2 nanoparticles with different morphologies have attracted considerable interest for better improvement of their performance in a variety of applications. In this work, titania nanostructures were prepared by using PS-b-PEO and PS-b-P4VP as structure-directing agents and titanium tetraisopropoxide as titanuim precursor. The titania films with different nanostructures were fabricated by drop-casting method from mixture solution containing polymer solution and the precursor via sol-gel reaction under organic solvent vapor. Calcination process was conducted to remove organic materials and to crystallize at high temperature. Here different types of solvents, processing conditions, and combination of structure-directing agents are shown to produce various TiO2 nanostrcutures with different length scales. |
