Integrated purification of gadolinium and preparation of Gd2O_(3) nanoparticles by DC arc plasma

作     者：Zhenggang Tang Minjie Hou Xin He Kai Ye Da Zhang Zhipeng Xie Yongnian Dai Feng Liang Zhenggang Tang;Minjie Hou;Xin He;Kai Ye;Da Zhang;Zhipeng Xie;Yongnian Dai;Feng Liang

作者机构：The National Engineering Laboratory for Vacuum MetallurgyKunming University of Science and TechnologyKunming 650093China Key Laboratory for Nonferrous Vacuum Metallurgy of Yunnan ProvinceKunming University of Science and TechnologyKunming 650201China Institute of Physical EducationYunnan Agriculture University State Key Laboratory of Complex Nonferrous Metal Resources Clear UtilizationKunming University of Science and TechnologyKunming 650093.China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2021年第39卷第12期

页      面：1574-1578,I0005页

核心收录：

学科分类：081702[工学-化学工艺] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 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）] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China(11765010) National Key Research and Development Program(2019YFC1907900) Yunnan Academician Free Exploration Fund(2018HA006) the Applied Basic Research Programs of Yunnan Provincial Science and Technology Department(202001AW070004) the Key Laboratory of Resource Chemistry,Ministry of Education(KLRC_ME2001) 

主　　题：Gd DC arc plasma Purification Preparation Nanomaterial Integration 

摘      要：The rare-earth metal Gd plays an important role in the energy,information,and national defence fields due to its special optical,electrical,magnetic,and catalytic *** this study,Gd was purified by direct current(DC)arc plasma,and Gd2O_(3) nanoparticles were prepared via an integration method using purified *** effects of arc current,melting time,gas pressure,and atmosphere on the purification of Gd by DC arc plasma were *** an increase in the arc current and melting time,the rate of removal of impurities from Gd ***,Gd melting was conducted by H_(2)-Ar arc plasma,which improves the impurity removal rate by increasing the H_(2) *** thermal conductivity and chemical activity of the activated H atoms generated by the dissociation of H_(2) are the main reasons for the significant improvement in the impurity removal *** mechanism of Gd purification was analysed based on the above-mentioned experimental *** as-synthesised Gd2 O_(3) nanoparticles have a uniform spherical structure(average diameter of 32.7 nm),appropriate dispersibility,and high *** study provides a new strategy for the integrated purification of metals and preparation of metal/metal-based nanomaterials by DC arc plasma.