Solid State Ionics and Energy Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore 641 046, India.
Ultrason Sonochem. 2014 Mar;21(2):599-605. doi: 10.1016/j.ultsonch.2013.08.015. Epub 2013 Sep 12.
NdVO4 nanoparticles are successfully synthesized by efficient sonochemical method using two different structural directing agents like CTAB and P123. The phase formation and functional group analysis are carried out using X-ray diffraction (XRD) and fourier transform infra red (FT-IR) spectra, respectively. Using Scherrer equation the calculated grain sizes are 27 nm, 24 nm and 20 nm corresponding to NdVO4 synthesized by without surfactant, with CTAB and P123, respectively. The TEM images revealed that the shape of NdVO4 particles is rice-like and rod shaped particles while using CTAB and P123 as surfactants. The growth mechanism of NdVO4 nanoparticles is elucidated with the aid of TEM analysis. From electrical analysis, the conductivity of NdVO4 nanoparticles synthesized without surfactant showed a higher conductivity of 5.5703 × 10(-6) S cm(-1). The conductivity of the material depends on grain size and increased with increase in grain size due to the grain size effect. The magnetic measurements indicated the paramagnetic behavior of NdVO4 nanoparticles.
成功地使用两种不同的结构导向剂 CTAB 和 P123 通过高效超声化学法合成了 NdVO4 纳米粒子。利用 X 射线衍射（XRD）和傅里叶变换红外（FT-IR）光谱分别进行了物相形成和官能团分析。利用谢乐方程计算出的晶粒尺寸分别为 27nm、24nm 和 20nm，对应于无表面活性剂、CTAB 和 P123 合成的 NdVO4。TEM 图像表明，当使用 CTAB 和 P123 作为表面活性剂时，NdVO4 颗粒的形状为稻粒状和棒状颗粒。借助 TEM 分析阐明了 NdVO4 纳米粒子的生长机制。从电分析来看，未使用表面活性剂合成的 NdVO4 纳米粒子表现出更高的电导率 5.5703×10(-6)Scm(-1)。材料的电导率取决于晶粒尺寸，并由于晶粒尺寸效应随晶粒尺寸的增加而增加。磁测量表明 NdVO4 纳米粒子具有顺磁性行为。
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