煅烧
X射线光电子能谱
微晶
扫描电子显微镜
材料科学
透射电子显微镜
氢氧化物
分析化学(期刊)
降水
纳米颗粒
化学工程
无机化学
化学
纳米技术
色谱法
冶金
催化作用
复合材料
物理
工程类
气象学
生物化学
作者
Bahaa M. Abu‐Zied,Abdullah M. Asiri
标识
DOI:10.1016/s1002-0721(14)60061-2
摘要
This work described the preparation of dysprosium oxide, Dy2O3, nanoparticles using the homogeneous precipitation method. Dy3+ ions were precipitated using NaOH solution. The obtained product was filtered, dried, and then calcined for 1 h at the temperature range of 300–700 °C in static air. The calcination temperature of the Dy-precursor was chosen based on its decomposition as indicated by the TGA analysis. The crystalline structure and surface morphology of the calcined solids were studied by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The obtained results revealed that Dy2O3 with crystallites size of 11–21 nm was formed at 500 °C. Such value increased to 25–37 nm for the sample calcined at 700 °C.
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