节点文献

均分散球形Y₂O₃:Eu³⁺纳米晶的制备研究

Study on Preparation of Monodispersed Spherical Y₂O₃ :Eu³⁺ Nanocrystalline

推荐 CAJ下载
PDF下载
不支持迅雷等下载工具，请取消加速工具后下载。

【Author】 Zhou Jianguo1, 2, Li Zhenquan1, Zhao Fengying1, Xia Shuping3, Gao Shiyang1,2,3 (1. Henan Normal University, Xinxiang 453002, China) (2. Lanzhou University, Lanzhou 730000, China) (3. Xi’an Branch, Institute of Salt Lake, Chinese Academy of Sciences, Xi’an 710043, China)

【机构】河南师范大学；中国科学院盐湖研究所西安二部；河南师范大学河南新乡453002 兰州大学甘肃兰州730000；河南新乡453002；陕西西安710043；河南新乡453002 兰州大学甘肃兰州730000 中国科学院盐湖研究所西安二部陕西西安710043；

【摘要】采用凝胶网格共沉淀法,以明胶为反应基质制备单分散球形纳米Y2_O3_:Eu(3+)~荧光粉,考察了制备条件对产物粒径的影响。利用X射线衍射(XRD)、透射电镜(TEM)和荧光光谱等手段对样品进行了表征。结果表明:该法制得产物为球形,一次晶粒粒径在13nm~25nm之间,且粒度分布均匀,与微米晶相比,该纳米晶的激发光谱发生明显红移。更多还原

【Abstract】 Monodispersed spherical Y2O3:Eu3+ nanocrystallines were successfully prepared by a novel gel-network coprecipitation process. The effect of reaction conditions on the resulting particles was investigated. XRD, TEM and fluorescence spectra were used to characterize the samples. The results show that the samples are spherical with a particle size of 13 nm~25 nm. Compared with micronscale Y2O3:Eu3+, a clear red shift occurs in the excitation spectrum of Y2O3:Eu3+ nanocrystalline prepared by the method.更多还原