کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1652512 1517338 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and characterization of lithium aluminate nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Synthesis and characterization of lithium aluminate nanoparticles
چکیده انگلیسی

In this work, we report the synthesis of lithium aluminate nanoparticles using simple coprecipitation method in various aqueous surfactant solutions and microemulsion systems. The particles have also been synthesized by coprecipitation without surfactants and sol–gel methods for comparison purpose. Nanocrystalline powders of lithium aluminate with spherical shape were obtained upon calcination. The resultant powders were characterized by XRD, SEM, TGA and BET techniques. As per the results from X-ray diffraction (XRD), the powder prepared by coprecipitation in the presence of Tween 80 and sol–gel showed purer γ-phase when it was calcined at 950 °C. Scanning electron microscopy (SEM) results show that the type of surfactant used has a distinct effect on the size of the lithium aluminate particles. The sample prepared by microemulsion technique shows smaller average particle size of 30 nm and high surface area (70 m2/g).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 61, Issues 23–24, September 2007, Pages 4540–4544
نویسندگان
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