微波诱导燃烧法制备Nd^(3+)掺杂LaBO_(3)粉体及表征  

Synthesis and characterization of Nd ^(3+) doped submicrometer lanthanum borate by microwave-induced combustion method

作　　者：储刚[1] 吴静 付丽婷 贾雅薇 吴钳 张静 孟竺 CHU Gang;WU Jing;FU Li-ting;JIA Ya-wei;WU Qian;ZHANG Jing;MENG Zhu(School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun 113001,China;Engineering Training Center,Liaoning Petrochemical University,Fushun 113001,China)

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001 [2]辽宁石油化工大学工程训练中心,辽宁抚顺113001

出　　处：《化学研究与应用》2021年第8期1589-1594,共6页Chemical Research and Application

基　　金：辽宁省高等学校创新人才支持项目(LR2017011)。

摘　　要：以六水硝酸钕、甘氨酸、硼酸和水合硝酸镧为原料,采用微波诱导燃烧合成法制备稀土元素Nd^(3+)掺杂改性的LaBO3粉体。采用UV-VIS DRS、XRD、PL和SEM等分析测试方法对目标产物进行表征。探究了Nd^(3+)的掺杂量为1~5%时,产物的形态结构和发光性质及煅烧温度和煅烧时间对产物相组成的影响。结果表明:Nd^(3+)掺杂的LaBO3粉体均为正交晶系LaBO3晶体,最佳反应条件是Nd^(3+)的掺杂量为3.0%,煅烧温度600℃,煅烧时间4 h。UV-VIS DRS光谱表明,Nd^(3+)掺杂改性后,目标产物的最大吸收波长由紫外光区红移至可见光区,增加了光吸收范围。荧光光谱数据显示,在330~435 nm范围内出现了强发射宽峰,峰值在352和380 nm处的发射峰归属于Nd^(3+)的4D3/2,4D5/2,2I11/2,2P3/2激发光谱。Using lanthanum nitrate hexahydrate,boric acid,glycine,Neodymium nitrate hexahydrate as raw materials,Nanometer lanthanum borate was prepared by microwave-induced combustion synthesis method.The product was characterized by means of UV-Vis diffuse reflection spectroscopy analysis,XRD,fluorescence spectrum analysis and SEM.The effects of different Nd ^(3+) doped amount from 1%to 5%,calcinations temperature and calcinations time on the product phase composition,morphostructure and luminous properties were explored.The results suggest that the best process conditions of synthesis of neodymium doped nanometer lanthanum borate were doped 3%Nd ^(3+) ,calcinations temperature was 600℃ and control calcinations time as 4 h.According to the UV-Vis diffuse reflection spectroscopy analysis,after doping modified,the maximum absorption wavelength of the target product happens red-shift from UV light to visible light,greatly increased light absorption rang.Fluorescence spectrum data displayed that in the range of 330~435 nm had strong emission peaks.The peak value at 352 nm and 380 nm were attributed to the 4D 3/2 ,4D 5/2 ,2I 11/2 ,2P 3/2 fluorescence spectrum of Nd ^(3+) .

关 键 词：微波诱导燃烧法 Nd3+掺杂 LaBO3粉体 

分 类 号：O614[理学—无机化学]