欢迎访问《人工晶体学报》官方网站,今天是 分享到:

人工晶体学报 ›› 2021, Vol. 50 ›› Issue (1): 80-87.

• 研究论文 • 上一篇    下一篇

基于磁光应用的TbO1.81和Tb2O3超细粉末的合成

冯凯1, 吕滨1, 程红梅1, 吴少凡2,3, 王燕2,3, 刘永兴4   

  1. 1.宁波大学材料科学与化学工程学院,宁波 315211;
    2.中国科学院福建物质结构研究所,光电材料化学与物理重点实验室,福州 350002;
    3.福建光电信息科学与技术创新实验室,福州 350108;
    4.浙江省光电探测材料及器件重点实验室,宁波 315211
  • 收稿日期:2020-10-09 出版日期:2021-01-15 发布日期:2021-03-01

Synthesis of Ultrafine TbO1.81 and Tb2O3 Powders for Magneto-Optical Application

FENG Kai1, LÜ Bin1, CHENG Hongmei1, WU Shaofan2,3, WANG Yan2,3, LIU Yongxing4   

  1. 1. School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China;
    2. Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China;
    3. Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, China;
    4. Key Laboratory of Photoelectric Materials and Devices of Zhejiang Province, Ningbo 315211, China
  • Received:2020-10-09 Online:2021-01-15 Published:2021-03-01
  • Contact: LÜ Bin, doctor, associate professor. E-mail:lvbin@nbu.edu.cn
    WANG Yan, doctor, professor. E-mail:wy@fjirsm.ac.cn
  • About author:FENG Kai(1996—), male, from Liaoning Province, postgraduates. E-mail:1109503281@qq.com
  • Supported by:
    National Natural Science Foundation of China (51702171, 51872286, 51832007); Zhejiang Provincial Qianjiang Talent Program of China (QJD1702017); Natural Science Foundation of Ningbo (2019A610052); Key Laboratory of Optoelectronic Materials Chemistry and Physics, Chinese Academy of Sciences (2008DP173016); Science and Technology Plan Leading Project of Fujian Province (2018H0046)

摘要: 以碳酸氢铵(AHC)为沉淀剂,采用液相沉淀法结合高温热分解获得了TbO1.81和Tb2O3超细粉体。研究表明,沉淀前驱体呈现出一维纳米线形貌特征,纳米线的平均宽度随碳酸氢铵含量的增加而增长。前驱体在空气中直接加热煅烧经过脱水、脱碳和颗粒生长等过程得到了平均粒径约为140 nm的类球状TbO1.81纳米粉体;而前驱体在流动氢气气氛下加热则获得了颗粒尺寸更小的Tb2O3粉体(平均粒度约为85 nm)。碳酸氢铵与Tb3+的摩尔比对氧化物粉体的分散有显著影响,最佳摩尔比为1∶1。TbO1.81和Tb2O3的禁带宽度分别约为1.67 eV和5.20 eV。

关键词: 超细粉末, Tb2O3, TbO1.81, 共沉淀法, 磁光效应, 形貌

Abstract: Ultrafine TbO1.81 and Tb2O3 powders were obtained from the pyrolytic precursor prepared via a wet chemical route using ammonium hydrogen carbonate (AHC) as the precipitant. The precipitation precursor has a chemical composition of hydrated terbium carbonate and exhibits one-dimensional nanorod morphology. The average width of the nanorods rises as the increase of AHC concentration. Calcining the precursor in air directly yields a round TbO1.81 nanopowder with an average particle size of ~140 nm through dehydration, decarbonation and particle growth processes. On the other hand, a Tb2O3 powder with a finer particle size of ~85 nm is reduced under flowing hydrogen atmosphere upon heating. The molar ratio of AHC to Tb3+ significantly affects the particle dispersion of final oxide products and the best molar ratio for the synthesis of well dispersed powder is 1∶1. The bandgap energies of TbO1.81 and Tb2O3 are ~1.67 eV and 5.20 eV, respectively.

Key words: ultrafine powder, Tb2O3, TbO1.81, co-precipitation method, magneto-optical effect, morphology

中图分类号: