کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1665103 1008783 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Layer-by-layer assembled TiO2 films with high ultraviolet light-shielding property
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Layer-by-layer assembled TiO2 films with high ultraviolet light-shielding property
چکیده انگلیسی


• PEI/TiO2 films were fabricated via a layer-by-layer self-assembly method.
• The films could effectively absorb harmful UVB light and filter off visible light.
• The films could deposit directly on either hydrophilic or hydrophobic substrates.

Ultraviolet (UV) B is hazardous to human, plants and animals. With the rapid growth of ozone holes over the earth, the exploration of optical materials that can cut off harmful UV radiation is important. In this work, fusiform TiO2 nanoparticles were synthesized by a hydrothermal synthesis method. The thin films assembled with TiO2 nanoparticles and oppositely charged polyelectrolytes were fabricated via a layer-by-layer assembly method. The fabrication of poly(ethylene imine) (PEI)/TiO2 multilayer films was verified by ultraviolet–visible spectra measurements, scanning electron microscopy and atomic force microscopy. The as-prepared PEI/TiO2 multilayer films can effectively absorb harmful UVB light and filter off visible light. Most importantly, the PEI/TiO2 films can be deposited directly on various kinds of hydrophilic substrates such as quartz, glass, silicon and hydrophobic substrates such as polystyrene, polypropylene, polyethylene and polymethyl methacrylate when the hydrophilic substrates were modified to obtain a hydrophilic surface.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 571, Part 1, 28 November 2014, Pages 127–133
نویسندگان
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