Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9675976 | Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2005 | 5 Pages |
Abstract
In recent years, TiO2 nanoparticle complex has been increasingly utilized in sun care products because of its UV-ray shielding performance and chemical stability. TiO2 nanoparticles from Degussa (P-25) were used as a seed for SiO2 coating using TEOS. A SiO2-coated TiO2 nanoparticle was prepared by a sol-gel process. The high-resolution transmission electron microscope (HR-TEM), FT-IR, energy dispersion spectrum (EDS) and X-ray photoelectron spectroscopy (XPS) analyses showed that the surface of TiO2 particles was evenly coated by amorphous SiO2 layer with 10-15Â nm thickness. Coated particles were measured with X-ray powder diffraction (XRD) to know the heat treatment effect on crystal structure of SiO2 layer and TiO2 seed.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Ok Kyung Park, Young Soo Kang,