کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
80335 49382 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sol–gel SiO2/TiO2 bilayer films with self-cleaning and antireflection properties
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Sol–gel SiO2/TiO2 bilayer films with self-cleaning and antireflection properties
چکیده انگلیسی

We report here that a facile sol–gel dip-coating technique can be used to fabricate a SiO2/TiO2 bilayer film with self-cleaning and antireflection properties. The bottom SiO2 layer acts as an antireflection coating due to its lower refractive index; the top TiO2 layer acts as a self-cleaning coating generated from its photocatalysis and photo-induced superhydrophilicity. The maximal transmittance of SiO2/TiO2 bilayer film at normally incident light can be reached 96.7%, independent of the high refractive index and coverage of TiO2 nanoparticles. However, the photocatalytic activity of the bilayer film shows a close dependence on coverage of TiO2 nanoparticles. After illuminated by ultraviolet light, the SiO2/TiO2 bilayer films are superhydrophilic with water contact angle less than 2°, which favors greatly the self-cleaning function of the films.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy Materials and Solar Cells - Volume 92, Issue 11, November 2008, Pages 1434–1438
نویسندگان
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