کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1694254 1519064 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ultrasound-assisted reconstruction and delamination studies on CaAl layered double hydroxides
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
Ultrasound-assisted reconstruction and delamination studies on CaAl layered double hydroxides
چکیده انگلیسی


• Calcined CaAl layered double hydroxides were reconstructed using ultrasounds.
• During the reconstruction there was a preference for chloride anion incorporation.
• Sample's delamination was not achieved using stirring for 2 days and formamide.
• Most samples underwent delamination using ultrasounds and formamide.
• A sample was reconstructed in the presence of CdTe quantum dots.

Two kinds of CaAl layered double hydroxides (CaAl-LDHs) were synthesized with chloride and nitrate anions by co-precipitation method. The samples were calcined and finally reconstructed by rehydration using ultrasounds, in the presence of NaCl or NaNO3. Reconstructed samples presented smaller lamella size than the parent ones. All samples were characterized by X-ray powder diffraction, FT-IR spectroscopy, thermogravimetric analysis and TEM microscopy. Delamination was not achieved by mechanical stirring for 2 days, whereas most samples underwent delamination by the use of ultrasounds. Additionally, a hybrid CaAl-LDHs with CdTe quantum dots was synthesized by reconstruction of a calcined CaAl-LDHs in the presence of the quantum dots.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Clay Science - Volume 118, December 2015, Pages 116–123
نویسندگان
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