کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9675976 | 1454111 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation and characterization of silica-coated TiO2 nanoparticle
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
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چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volumes 257â258, 5 May 2005, Pages 261-265
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volumes 257â258, 5 May 2005, Pages 261-265
نویسندگان
Ok Kyung Park, Young Soo Kang,