Polymer and Material Research Groups, Faculty of Science, Udon Thani Rajabhat University, Udon Thani 41000, Thailand; Division of Chemistry, Faculty of Science, Udon Thani Rajabhat University, Udon Thani 41000, Thailand.
Department of Physics, Faculty of Science, Udon Thani Rajabhat University, Udon Thani 41000, Thailand.
Ultrason Sonochem. 2018 Mar;41:441-448. doi: 10.1016/j.ultsonch.2017.10.008. Epub 2017 Oct 7.
Barium titanate (BaTiO) 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) and diisopropoxytitanium bis(acetylacetonate) (CHOTi) 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 BaTiO. The optimal NaOH concentration and ultrasonic reaction time for producing a narrow particle size distribution and the bowl-like structure of BaTiO 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 BaTiO particles.
钛酸钡（BaTiO）纳米粒子通过在 25°C 恒温、常压下的超声化学法（25kHz）成功合成，无需煅烧步骤。使用氢氧化钡（Ba(OH)）和二异丙氧基钛双（乙酰丙酮）（CHOTi）作为起始原料。考察了所使用的 NaOH 浓度和超声反应时间的影响。采用 X 射线衍射（XRD）、傅里叶变换红外光谱（FTIR）、傅里叶变换拉曼光谱（FT-Raman）和透射电子显微镜（TEM）对合成粉末的物相组成、官能团和形貌进行了表征。XRD 和 FT-Raman 结果表明产物具有立方结构的 BaTiO。产生窄粒径分布和 BaTiO 纳米粒子碗状结构的最佳 NaOH 浓度和超声反应时间分别为 10 M 和 1 h。TEM 图像显示其形态为单分散的碗状结构，尺寸为 54.90±18.18nm。超声接触时间较长后，碗状结构趋于断裂，形成形状不规则的纳米级 BaTiO 颗粒。
