两种沉淀剂对Pr:YAG纳米粉体的性能影响研究  

Comparative study of synthesis and characterization of Pr∶YAG nanoparticles using different precipitator by co-precipitation method

作　　者：李婧[1] 李健平[1] 吴文娟[1] 肖定全[1] 朱建国[1] 

机构地区：[1]四川大学材料科学与工程学院,四川成都610064

出　　处：《功能材料》2012年第10期1244-1246,1250,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(60890203)

摘　　要：分别采用碳酸氢铵和尿素为沉淀剂用沉淀法制备了Pr掺杂的YAG纳米粉体。并利用XRD、FT-IR、TEM等方法对样品进行了成分、粒度和形貌等性能分析,讨论了不同沉淀剂的反应机理。结果表明,碳酸氢铵沉淀法能够在较低温度下制备颗粒均匀、分散性良好的YAG纳米粉体;而尿素沉淀法所制备的粉体需要较高的煅烧温度,粉体粒径大、团聚较为严重。此外,Pr∶YAG纳米粉体的荧光强度随粉体粒径的增大而加强。Pr ：YAG nanopowders were synthesized by co-precipitant method using two different precipitator- ammonium hydrogen carbonate and urea. The as-prepared nanopowders were characterized by XRD, FT-IR and TEM. The reaction mechanism of different precipitator and the effect on the particle size and dispersion of Pr ：YAG powders were investigated. The result shows that uniform particle with good dispersion were obtained by ammonium hydrogen carbonate compared to the larger and agglomerated powders from urea. Moreover, the PL spectroscopy indicated that the larger particle will increase the fluorescence intensity of Pr ： YAG nanopowders.

关 键 词：碳酸氢铵 尿素 共沉淀法 Pr∶YAG纳米粉体 

分 类 号：TF123[冶金工程—粉末冶金]