摘要
以Y2O3,Eu2O3为原料,NH3?H2O和NH4HCO3为沉淀剂,采用共沉淀法,在700至1200℃下煅烧2h制备出Y2O3:Eu3+纳米粉体,通过X射线衍射分析(XRD)、扫描电镜(SEM)和荧光分光光度计等表征样品的性能,研究不同掺杂浓度,不同烧结温度及不同沉淀剂对粉体各项性能的影响。结果表明,以两种沉淀剂制备的纳米粉体均为纯相,与Y2O3标准PDF卡片41-1105相吻合。以NH3?H2O为沉淀剂制备出来的前驱体在1100℃下煅烧2h获得的粉体分布均匀,近似球形,粒径分布在50~80nm,以NH4HCO3为沉淀剂制备出来的前驱体在1100℃下煅烧2h获得的粉体分布均匀,纯度高,具有良好的分散性,粒径分布在60~80nm。制备出来的粉体在波长为254nm的紫外光激发下发出611nm的红光。
Y2O3： Eua＋ nano-powders were prepared by using co-precipitatton method wlm Y2O3 and Eu2O3 as rawmaterials, NH3 · H2O and NH4HCO3 as the precipitant, calcining at 700-1200℃ for 2h.The synthesized Y2O3： Eu3＋ ha- no-powders with different Eu3＋ doping ratio, calcining temperatures 3＋andprecipitants were characterized by N-ray diffractometry （XRD）, Scanning electron microscopy （SEM） and fluorescence spectrophotometer.The results illustrated that the diffraction peaks of samples are well consistent with JCPDS No.41-1105. The nanopowders with NH3· H2O as the precipitant calcined at 1100℃ for 2h had a uniform distribution, approximating sphere. The particle size was in the range of 50-80nm.The nano-powders with NI-LHCO：, as the precipitant calcined at 1100℃ for 2h had an uniform distribution, high purity and good dispersibility. The particle size was in the range of 60-80nm.The nano-powders emitted the red light at the 61into under the UV-light with 254nm excited.
出处
《长春理工大学学报（自然科学版）》
2015年第4期74-77,共4页
Journal of Changchun University of Science and Technology(Natural Science Edition)
基金
吉林省创新创业训练项目(2014S002)
