کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4918163 | 1428755 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Geopolymer-supported photocatalytic TiO2 film: Preparation and characterization
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Geopolymer-supported photocatalytic TiO2 film: Preparation and characterization Geopolymer-supported photocatalytic TiO2 film: Preparation and characterization](/preview/png/4918163.png)
چکیده انگلیسی
The article reports preparation and characteristics of TiO2 films deposited on geopolymer substrates via sol-gel dip coating process. Serious cracking takes place within TiO2 film derived from sol precursor with butyl titanate as titanium source and prepared by traditional dip-coating process on geopolymer substrates. It is found that the incorporation of 6% Polyvinylpyrrolidone, and the application of vacuum impregnation before withdrawing relieve cracking significantly, and the resulting TiO2 film exhibits mesoporous morphology. The TiO2 film annealed at 600 °C is mainly composed of anatase phase, and exhibits highest photocatalytic activity evaluated by degrading methylene blue. Multilayer dip-coating promotes photocatalytic activity of the obtained TiO2 film in some extent, but decreases in photocatalytic efficiency and homogeneity are observed when the number of coating layers is over 3.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 151, 1 October 2017, Pages 63-70
Journal: Construction and Building Materials - Volume 151, 1 October 2017, Pages 63-70
نویسندگان
Lou Chen, Keren Zheng, Yang Liu,