摘要
采用共沉淀-焙烧法制备镧铈铽氧化物绿色荧光粉,研究了表面助剂、酸碱度、底液溶剂及反应温度对镧铈铽氧化物形貌的影响。用X衍射、扫描电镜以及光学显微镜对产物进行分析表征。结果表明,前驱体镧铈铽草酸盐的结晶环境对镧铈铽氧化物的形貌有着重要影响;在非离子表面助剂、强酸性和有机溶剂做底液的体系环境中更利于得到分散性好、形貌规则、球形度较高的多面体镧铈铽氧化物。
LaCeTb oxide green phosphor was prepared by coprecipitation-molten salt baking method,and the effects of surfactant,acidity-alkalinity,organic solvent and the reaction temperature on the particle morphology were investigated.X-ray powder diffraction（XRD）,optical microscopy and scan electron microscopy（SEM） were used to analyze and characterize the resulted LaCeTb oxide phosphor.The results indicated that the good dispersive,obvious granular and polyhedral LaCeTb oxide can be obtained by preparing precursor（LaCeTb）2（C2O4）3 with strong acidity,nonionic surfactant and organic solvent.
出处
《稀土》
EI
CAS
CSCD
北大核心
2009年第4期25-29,共5页
Chinese Rare Earths
