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Microstructural Analysis and Optical Properties of Lead Zirconate Nanoparticles
JOM ( IF 2.6 ) Pub Date : 2020-08-03 , DOI: 10.1007/s11837-020-04296-0
K. H. Omran , M. S. Abd El-sadek , M. Mostafa , O. M. Hemeda

Lead zirconate (PZ) nanopowders were synthesized by the treatment of precursors with high-energy ball milling for a relatively short time. The effects of ball milling time and rotational speed on the produced nanomaterial were investigated. The calcination temperature of the ball-milled powder was determined from the thermogravimetric analysis (TGA) and the differential scanning calorimetry (DSC) results. The structural properties of the calcined nanoparticles were studied by Fourier transmission infrared (FT-IR), x-ray diffraction (XRD), and transmission electron microscope (TEM). Well-crystallized PZ nanopowders were obtained after heating at 800°C for 3 h. The diffraction data were refined by the Rietveld method to accurately determine the crystallographic information. Williamson-Hall, Halder-Wagner, and size-strain plot methods were employed to investigate the average crystallite size and lattice microstrain in the prepared samples. The XRD and TEM images confirmed the formation of nanoparticles with an average size in the range of 20–43 nm. The band gap of the nanopowders varied from 3.11 eV to 3.28 eV as established by diffuse reflectance measurement.



中文翻译:

锆酸铅纳米粒子的微观结构分析和光学性质

锆酸铅(PZ)纳米粉是通过在较短时间内用高能球磨法处理前体而合成的。研究了球磨时间和转速对制备的纳米材料的影响。球磨粉的煅烧温度由热重分析(TGA)和差示扫描量热法(DSC)确定。通过傅立叶透射红外(FT-IR),X射线衍射(XRD)和透射电子显微镜(TEM)研究了煅烧纳米颗粒的结构性能。在800°C加热3小时后,获得了结晶良好的PZ纳米粉。通过Rietveld方法精制衍射数据,以准确确定晶体学信息。Williamson-Hall,Halder-Wagner,采用尺寸应变图法研究了所制备样品的平均晶粒尺寸和晶格微应变。XRD和TEM图像证实了平均尺寸在20-43 nm范围内的纳米颗粒的形成。纳米粉末的带隙在3.11 eV到3.28 eV之间,这是通过漫反射率测量确定的。

更新日期:2020-08-04
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