(1. 湖南大学 化学化工学院，长沙 410082；
2. 湖南有色冶金劳动保护研究院，长沙 410014)
摘 要: 以氨水或碳酸铵为沉淀剂，采用共沉淀-水热合成法制备稀土掺杂铝酸锶发光纳米材料，并优化制备稀土掺杂铝酸锶发光材料的工艺条件。对激活剂、助激活剂、助熔剂的用量、体系的酸碱度和灼烧温度对目标产物发光性能的影响规律进行研究。结果表明：目标产物Sr2Al14O25:Eu2+,Dy3+属正交晶系，为蓝绿色长余辉纳米材料，主激发峰均在360 nm左右；氨水共沉淀法制备的产物主发射峰在490 nm, 磷光衰减寿命约30 s；碳酸铵沉淀法制备的产物主发射峰在460 nm, 磷光衰减寿命约15 s。
关键字: Sr2Al14O25:Eu2+,Dy3+；共沉淀-水热合成；长余辉；发光性能
（1. College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China;
2. Hunan Labor Protection Institute of Nonferrous Metals, Changsha 410014, China）
Abstract:Europium and dysprosium co-doped strontium aluminate nanomaterials were prepared by co-precipitation hydrothermal method using ammonia and ammonium carbonate as precipitating agent, and the optimal conditions were determined. The influences, such as the amount of the activator, co-activator, flux, calcined temperature and pH, of the system on the luminescence properties of the products were investigated. The results show that the compound Sr2Al14O25:Eu2+,Dy3+ is orthorhombic aquamarine blue long afterglow nanomaterials, the main excitation peak is around 360 nm, the main emission peak of the phosphors obtained using ammonia as precipitation agent is around 490 nm, with the phosphorescence decay lifetime of 30 s, the main emission peak of the products with ammonium carbonate as precipitation agent is around 460 nm, and its phosphorescence decay lifetime is 15 s. The target products with good long afterglow properties are hopeful to be applied in coating, ceramics, photonic devices and other related fields.
Key words: Sr2Al14O25:Eu2+,Dy3+; coprecipitation-hydrothermal method; long afterglow; luminescence properties
