溶剂热-高温煅烧法制备纳米Gd_2MoO_6:Nd^(3+)近红外发光材料  

Solvothermal Preparation and Near Infrared Luminescence of Gd_2MoO_6:Nd^(3+) Nano-phosphors

作　　者：张蕤[1] 谢丽娟[1] 蔡建亮[1] 孟建新[1,2] 

机构地区：[1]暨南大学化学系,广东广州510632 [2]暨南大学纳米化学研究所,广东广州510632

出　　处：《发光学报》2012年第11期1166-1170,共5页Chinese Journal of Luminescence

基　　金：国家自然科学基金(30670523);中央高校基本科研业务费专项资金资助项目

摘　　要：采用乙二醇-水的混合溶液作为溶剂,用溶剂热法制备了Gd2MoO6∶Nd3+的前驱体,然后对得到的样品在800℃下煅烧1 h。使用X射线衍射仪对样品的结构进行了表征,通过近红外和可见光区的发射光谱和激发光谱以及透射电子显微镜对样品的发光性质以及形貌进行了研究。探究了煅烧温度、Nd3+的掺杂浓度、pH值、乙二醇-水的配比对样品的近红外发光性能以及形貌的影响。实验结果表明,在乙二醇-水的配比为1∶1,Nd3+的掺杂摩尔分数为0.03,pH值为1.5,煅烧温度为800℃时,能得到分散性良好,并具有优良近红外发光性质的纳米粒子。Gd2MoO6∶Nd3＋ nanophosphors was prepared with a solvothermal method using glycol-water mixed solution as a solvent,then calcined at 800 ℃ for 1 h.The samples were tested with X-ray diffraction,transmission electron microscope,emission and excitation spectrum.Uniform Gd2MoO6∶Nd3＋ nano-spher with good dispersity and efficient near infrared emission can be achieved at a reaction temperature as low as 800 ℃ and pH value of 1.5.The optimized Nd3＋ doping mole fraction is 0.03.The ratio of water to ethylene glycol is 1∶1.The particle is promising in the application of fluorescence immunoassay.

关 键 词：溶剂热法 近红外发光材料 Nd3+ Gd2MoO6 

分 类 号：O482.31[理学—固体物理] O611.4[理学—物理]