Facile synthesis, morphology and structure of Dy_2O_3 nanoparticles through electrochemical precipitation

作     者：Taher Yousefi Meisam Torab-Mostaedi Abolfazl Aghaei Hossein Ghasemi-Mobtaker 

作者机构：Nuclear Fuel Cycle Research School Nuclear Science and Technology Research Institute 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2016年第35卷第8期

页      面：637-642页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 0806[工学-冶金工程] 08[工学] 0817[工学-化学工程与技术] 070205[理学-凝聚态物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 070301[理学-无机化学] 0702[理学-物理学] 

基　　金：financially supported by the Nuclear Science and Technology Research Institute of Iran 

主　　题：Dy203 Nanoparticle Electrodeposition Nanostructures Rare earth 

摘      要：The aim of this research was to introduce a new, facile and simple method for synthesis of Dy203 nanostructures at room temperature. For the first time, galvanostatic electrodeposition was used to synthesize Dy203 particles, and the influence of the current density on the structure and morphology of the product was studied. The samples were characterized by X-ray diffraction （XRD）, transmission electron microscopy （TEM） and Brunauer-Emmett-Teller （BET）. The results show that the current density has little effect on the chemical composi- tion but great effect on the structure and morphology of the samples. The average size of the particles decreases as the applied current density increases. The grain size of as- prepared samples decreases from 500 to 70 nm when the current density increases from 0.5 to 6.0 ***-a. To obtain oxide product, the as-prepared samples were heat- treated at 1,000 ℃. The results show that the heat-treated samples have smaller particles. The XRD results show that the similar patterns are observed in the samples synthesized at different current densities, and the only difference from the JCPDS card is the ratio of peak intensities. With the increase in the current density, a decrease in the current efficiency is observed.