کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9675683 | 1454104 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
ZnAl-layer double hydroxides as photocatalysts for oxidation of phenol in aqueous solution
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
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چکیده انگلیسی
ZnAl-layer double hydroxides (ZnAl-LDHs) with various Zn/Al ratios from 1:1 to 4:1 were prepared by the sol-gel method. The amount of ZnO in the layer double hydroxide was increased by the addition of more Zn hydroxide sol and Zn-oxide-hydroxide/2:1 ZnAl-LDH composites were prepared by heterocoagulation. The samples were calcinated at different temperatures (80-700 °C) and it was shown by XRD and TG measurements that the crystallinity of the samples improves as temperature is increased. The photocatalytic properties of the heat-treated samples were studied in a batch reactor with aqueous phenol solution as substrate. The samples prepared from ZnAl-LDH were shown to have higher photocatalytic efficiencies at 3:1 and 4:1 Zn/Al ratios in the case of mixed phase double hydroxide and ZnO crystals.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 265, Issues 1â3, 1 September 2005, Pages 64-72
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 265, Issues 1â3, 1 September 2005, Pages 64-72
نویسندگان
Ágnes Patzkó, Robert Kun, Viktória Hornok, Imre Dékány, Thomas Engelhardt, Norbert Schall,