کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10670076 1008846 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Controlled preparation of titania nanofilm by a template of polydopamine film and its reversible wettability
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Controlled preparation of titania nanofilm by a template of polydopamine film and its reversible wettability
چکیده انگلیسی
Titanium oxide (TiO2) nanofilm was prepared by a simple method of sol-gel deposition on the glass substrate, which was pre-modified with a polydopamine (PDA) film. The as-prepared TiO2 nanofilm was analyzed by X-ray diffraction, scanning electron microscopy, and atomic force microscopy. The thickness of TiO2 film can be controlled by the thickness of PDA film, which was dependent on the polymerization time. The mechanism of wettability conversion on TiO2 film was investigated by means of contact angle measurements in different experimental conditions. The results demonstrated that humidity was the major factor for converting the hydrophobic surface of TiO2 film into hydrophilic surface under ultra-violet (UV) irradiation. And atmospheric oxygen played dominant role in reconverting the hydrophilic surface of TiO2 film into hydrophobic surface when it was stored in the dark. The TiO2 nanofilm showed reversible hydrophobic/hydrophilic conversion in the condition of alternating between UV irradiation and storage in the dark.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 520, Issue 7, 31 January 2012, Pages 2776-2780
نویسندگان
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