Synthesis of Dy2O3 nanoparticles via hydroxide precipitation: effect of calcination temperature |
| |
作者单位: | [1]Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia [2]Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia [3]Chemistry Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt |
| |
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.
|
关 键 词: | 均匀沉淀法 纳米颗粒 焙烧温度 氢氧化物 场发射扫描电子显微镜 透射电子显微镜 合成 镝 |
收稿时间: | 2013-05-29 |
本文献已被 CNKI 维普 ScienceDirect 等数据库收录! |
|