کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10629534 | 991068 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation and photocatalytic properties of macroporous honeycomb alumina ceramics used for water purification
ترجمه فارسی عنوان
خواص آماده سازی و فتوکاتالیتی سرامیک آلومینا لانه زنبوری ماکرو پورووس برای تصفیه آب مورد استفاده قرار می گیرد
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
چکیده انگلیسی
In this work, porous alumina ceramics with highly ordered capillaries were successfully fabricated by ionotropic gelation process of alginate/alumina suspensions. By varying the initial solid loading (10-30 wt%) of slurries, the porosity of alumina ceramics ranged from 60.4% to 79.5% with controlled pore size (180-315 μm). Due to the well-crosslinked macroporous structure and large specific surface areas, the porous ceramics were utilized as the photocatalyst supports of TiO2 catalysts whose photocatalytic activity was characterized by degrading methyl blue under UV irradiation. TiO2 coatings prepared by sol-gel method demonstrated excellent adhesion to the substrates. When the solid loading of supports reached 15 wt%, the TiO2 coatings showed the highest photocatalytic efficiency of 79.52%. Besides, TiO2 films possessed nearly the same photocatalytic activity as titania/water suspension. Thus, the honeycomb ceramic prepared by self-organization process holds promise for use as photocatalyst supports in water purification without recycling process of powders.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 34, Issue 3, March 2014, Pages 731-738
Journal: Journal of the European Ceramic Society - Volume 34, Issue 3, March 2014, Pages 731-738
نویسندگان
Linjing Du, Wei Liu, Shengliang Hu, Yanzhong Wang, Jinlong Yang,