UV차단용 이산화티탄 합성 및 화장품 소재로의 응용

A Study of Synthesis of UV-blocking Titanium Dioxide and Its Application as a Cosmetic Ingredient

This study synthesized titanium dioxide (TiO2) in a 3D mesoporous nanostructure, which has excellent UV-blocking effects with a relatively broad surface area. Particle shape, crystallinity and specific surface area were analyzed using FE-TEM, XRD and BET, respectively. In terms of optical properties, it was compared to the P-25 manufactured by ‘D,’ using a UV-vis Spectrophotometer. The results found the following: in terms of particle size, the crystallinity of anatase 50-300nm was found. The specific surface area and pore size were 310 m2/g and 2.5nm, revealing a specific surface area higher than the general mesoporous nano structure. In terms of UV absorption, in addition, it was better than the synthesized P-25 in all UVB and UVA ranges. It was particularly higher than P-25 by about 30% in terms of absorption rates even at 350 nm where the absorption rate of general particulate TiO2 decreases. In terms of UV reflectance, the efficiency was close to P-25 in all UVB and UVA ranges. Therefore, it appears that the fabricated synthesis would be able to solve ‘whitening’, which has been found in conventional TiO2, in addition to excellent UV-blocking effects. Furthermore, it would be useful in diverse applications as a cosmetic ingredient.