Synthesis of Dy2O3 nanoparticles via hydroxide precipitation： effect of calcination temperature

This work described the preparation of dysprosium oxide, Dy203, 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 ℃ in static air. The calc...

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Bibliographic Details
Published inJournal of rare earths Vol. 32; no. 3; pp. 259 - 264
Main Authors Abu-Zied, Bahaa M., Asiri, Abdullah M.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.03.2014
Subjects
Dy2O3
Dy2O3 nanoparticles
nanocrystalline dysprosium oxide
precipitation method
rare earths
合成
场发射扫描电子显微镜
均匀沉淀法
氢氧化物
焙烧温度
纳米颗粒
透射电子显微镜
镝
Dy2O3 nanoparticles
nanocrystalline dysprosium oxide
precipitation method
Dy2O3
rare earths
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Summary:This work described the preparation of dysprosium oxide, Dy203, 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 ℃ in static air. The calcination temperature of the Dy-precttrsor was chosen based on its decomposi- tion 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 pho- toelectron spectroscopy （XPS）. The obtained results revealed that Dy203 with crystallites size of 11-21 nm was formed at 500 ℃. Such value increased to 25-37 nm for the sample calcined at 700 ℃.
Bibliography:11-2788/TF
nanocrystalline dysprosium oxide; Dy203; precipitation method; Dy203 nanoparticles; rare earths
Bahaa M. Abu-Zied, Abdullah M. Asiri（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）
This work described the preparation of dysprosium oxide, Dy203, 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 ℃ in static air. The calcination temperature of the Dy-precttrsor was chosen based on its decomposi- tion 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 pho- toelectron spectroscopy （XPS）. The obtained results revealed that Dy203 with crystallites size of 11-21 nm was formed at 500 ℃. Such value increased to 25-37 nm for the sample calcined at 700 ℃.
ISSN:1002-0721
2509-4963
DOI:10.1016/S1002-0721(14)60061-2