کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5369037 | 1388419 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
ZnO:CeO2-based nanopowders with low catalytic activity as UV absorbers
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
Ultrafine systems of zinc oxide and cerium oxide for use as ultraviolet filter were synthesized by a non-alkoxide sol-gel process at different temperatures, to obtain solid materials (40 and 70 °C), that were characterized by X-ray diffraction, scanning electron microscopy, UV-vis reflectance. Their catalytic and photocatalytic activities were also evaluated. ZnO:CeO2 systems present higher UV absorption and transparency in the visible region. The photocatalytic activity of ZnO:CeO2 systems for the oxidation of organic materials is much smaller than that of titania, ceria and zinc oxide, suggesting that ZnO:CeO2 systems are promising candidates for use as optical materials in UV-filters.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 255, Issue 22, 30 August 2009, Pages 9006-9009
Journal: Applied Surface Science - Volume 255, Issue 22, 30 August 2009, Pages 9006-9009
نویسندگان
Juliana Fonseca de Lima, Renata Figueredo Martins, Cláudio Roberto Neri, Osvaldo Antonio Serra,