共沉淀法制备参数对(Y，Gd)2O3：Eu^3＋纳米粉体性能的影响  

Effect of Process Parameter on Properties of (Y,Gd)_2O_3:Eu^(3+) Nanopowders Prepared by Co-Precipitation Method

作　　者：郭易芬[1,2] 马伟民[1] 闻雷[3] 沈世妃[1] 王华栋[1] 尹凯[1] 

机构地区：[1]沈阳化工学院材料科学与工程学院,沈阳110142 [2]沈阳大学机械工程学院,沈阳110044 [3]中国科学院金属研究所沈阳材料科学国家(联合)实验室,沈阳110016

出　　处：《无机化学学报》2009年第5期880-885,共6页Chinese Journal of Inorganic Chemistry

基　　金：辽宁省自然科学基金(No.20062001)项目;辽宁省科技攻关计划项目(No.2005222009)资助

摘　　要：采用氨水为沉淀剂,正向滴定共沉淀法制备(Y,Gd)2O3∶Eu3+纳米粉体。用XRD、SEM和荧光光度计对粉体的形貌和特性进行了分析。结果表明:稀土溶液的起始浓度0.15 mol·L-1,体系温度0℃,滴定速度2 mL·min-1,静止12 h,添加3%(NH4)2SO4(质量分数)并且在800℃煅烧2 h的条件下,合成出(Y,Gd)2O3∶Eu3+纳米粉体近似球形,粒径尺寸约为30~60 nm且分散性良好。添加3%(NH4)2SO4的含量能够改善(Y,Gd)2O3∶Eu3+纳米粉体的发光性能,并使发射光谱在5D0→7F2跃迁态上获得最大的相对发光峰值。（Y,Gd）2O3 ：Eu^3＋ nano-powders were prepared by forward-titration co-precipitation method and using ammonia as the precipitator. XRD, SEM and the fluorophotometer were used to analyze the morphology and characteristics of the powders. The results show that the near-spherical nano-powders with good dispersibility and fine particle size （30-60 nm） were obtained under the conditions of initial concentration of resolution, 0.15 mol·L^-1, system temperature, 0 ℃, titration rate, 2 mL·min^-1, stationary, 12 h and adding 3% （NH4）2SO4 （mass fraction）. When adding 3% （NH4）2SO4, the nano-powders＇ Luminescent has improved and the emission intensity of ^5D0→^7F2 transition reaches the maximum.

关 键 词：共沉淀法 制备参数 合成与表征 光谱特性 

分 类 号：O614.33[理学—无机化学] TQ422[理学—化学]