|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|5364562||1503702||2012||5 صفحه PDF||سفارش دهید||دانلود رایگان|
First a SiOx layer, as a barrier layer between a photo active anatase TiO2 layer and BOPP substrate, was coated on hydroxylated BOPP film by a sol-gel process. Then, TiO2 layer was formed on SiOx surface through liquid phase deposition. Thus a flexible BOPP/SiOx/TiO2 multilayer film which has photocatalytic activity was fabricated. The coating processes were monitored by FT-IR and UV-vis spectroscopy, scanning electron microscopy, atom force microscopy and water contact angle (CA) measurements. The thickness of SiOx and TiO2 layer was about 600Â nm and 135Â nm, respectively. Root mean square (RMS) roughness of the SiOx layer was about 2-3Â nm while the surface of TiO2 layer was much coarse with RMS roughness about 30Â nm which offered the large surface area. The TiO2 layer endowed multilayer film photoinduced hydrophilic conversion property evidenced by the fact that its surface water contact angle could reduce to about 5Â° after 1Â h of UV irradiation. The photocatalytic degradation ability of multilayer film was evaluated using methyl orange as model contamination and the results indicating that the degradation is efficient.
âº Flexible BOPP/SiOx/TiO2 multilayer film. âº Sequential deposition by spin-coating and sol-gel processes. âº Multilayer composite film with photoinduced hydrophilic transformation capability. âº Photocatalytic degradation ability.
Journal: Applied Surface Science - Volume 261, 15 November 2012, Pages 436-440