کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5144407 1496863 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ultrasonic assisted synthesis of BaTiO3 nanoparticles at 25 °C and atmospheric pressure
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Ultrasonic assisted synthesis of BaTiO3 nanoparticles at 25 °C and atmospheric pressure
چکیده انگلیسی
Barium titanate (BaTiO3) nanoparticles were successfully synthesized via a sonochemical method (25 kHz) at a constant temperature of 25 °C and atmospheric pressure without a calcination step. Barium hydroxide Ba(OH)2 and diisopropoxytitanium bis(acetylacetonate) (C12H28O6Ti) were used as the starting materials. The effects of the concentration of NaOH used and ultrasonic reaction time were investigated. The phase composition, functional groups and morphology of synthesized powders were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Fourier transform Raman spectroscopy (FT-Raman) and transmission electron microscopy (TEM). The XRD and FT-Raman results revealed the cubic structure of BaTiO3. The optimal NaOH concentration and ultrasonic reaction time for producing a narrow particle size distribution and the bowl-like structure of BaTiO3 nanoparticles were 10 M and 1 h, respectively. TEM imagery showed their morphology as a monodispersed bowl-like structure with a size of 54.90 ± 18.18 nm. After longer ultrasonic contact times, the bowl-like structure tended to fracture forming irregularly shaped nano-sized BaTiO3 particles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics Sonochemistry - Volume 41, March 2018, Pages 441-448
نویسندگان
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