کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1658941 | 1008364 | 2010 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of polyethylene glycol on hydrophilic TiO2 films: Porosity-driven superhydrophilicity
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of polyethylene glycol on hydrophilic TiO2 films: Porosity-driven superhydrophilicity Effect of polyethylene glycol on hydrophilic TiO2 films: Porosity-driven superhydrophilicity](/preview/png/1658941.png)
چکیده انگلیسی
Polyethylene glycol (PEG) 2000 was used as a templating reagent to synthesize porous TiO2 thin film by sol-gel process. The nanopores resulting from the presence of growing cracks were ultimately formed on the surface when PEG content was higher than the critical value. Surprisingly, stable pore structure disappeared and surface became fluctuating and dehiscent after PEG amount increased to 0.02Â M. Besides, two main hypotheses were proposed in order to explain this superhydrophilic behavior, namely the Wenzel and Cassie wetting impregnating models. Furthermore, the transition between these two wetting regimes was investigated and the criteria for the design and construction of Cassie impregnating wetting surface was also discussed. It was found that Cassie state shifting from Wenzel state could be easily achieved with increasing hole depth on TiO2 surface. The study of transition between Wenzel and Cassie impregnating wetting regimes on porous films provides valuable wetting mechanism of porosity-driven wettability for the design of superhydrophilic surfaces.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 204, Issue 24, 15 September 2010, Pages 3954-3961
Journal: Surface and Coatings Technology - Volume 204, Issue 24, 15 September 2010, Pages 3954-3961
نویسندگان
Weixin Huang, Ming Lei, Hong Huang, Junchi Chen, Huanqin Chen,