کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5439327 1398194 2016 18 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effects of PVP surfactant in the direct and indirect hydrothermal synthesis processes of ceria nanostructures
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
The effects of PVP surfactant in the direct and indirect hydrothermal synthesis processes of ceria nanostructures
چکیده انگلیسی
CeO2 nanostructures with completely different morphologies were successfully prepared using the same cerium source and mineralizer through the direct and indirect hydrothermal methods with different introducing strategies of PVP surfactant. The CeO2 nanostructures tend to form the morphologies of nano-flowers and nano-cubes through the indirect and direct hydrothermal methods, respectively. X-ray diffraction (XRD) analyses revealed that both as-prepared nanostructures are composed of CeO2 with a standard fluorite structure. The different synthesis mechanisms and corresponding chemical evolutions of the as-prepared CeO2 nanostructures are discussed based on the different introducing strategies of PVP surfactant in the direct and indirect hydrothermal processes. Investigation of the UV-shielding ability of both CeO2 nanostructures suggested that the UV absorbance of the nano-flowers is much higher than that of the nano-cubes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 42, Issue 16, December 2016, Pages 18516-18520
نویسندگان
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