苯甲酸铵导向合成线状纳米结构CePO_4和Ce_(0.95)PO_4∶Tb_(0.05)及其发光性能  

Ammonium benzoate-doped synthesis and luminescence properties of CePO_4 and Ce_(0.95)PO_4∶Tb_(0.05) nanowires

作　　者：包七十三 赵鑫 闫宇 边玉龙 郭雪原 王明远 宝金荣[2] 李文先[2] BAO Qishisan;ZHAO Xin;YAN Yu;BIAN Yulong;GUO Xueyuan;WANG Mingyuan;BAO Jinrong;LI Wenxian(Vocational and Technical College of Inner Mongolia Agricultural University,Baotou 014109,China;College of Chemistry and Chemical Engineering,Inner Mongolia University,Hohhot 010021,China)

机构地区：[1]内蒙古农业大学职业技术学院,内蒙古包头014109 [2]内蒙古大学化学化工学院,呼和浩特010021

出　　处：《功能材料》2018年第7期7018-7023,共6页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(21766021);内蒙古重大自然科学基金资助项目(2015ZD01);内蒙古自然科学基金资助项目(2015MS0502)

摘　　要：采用水热法通过苯甲酸铵(简写为L)导向控制合成了六方相CePO_4和Ce_(0.95)PO_4∶Tb_(0.05)纳米线。用X射线衍射(XRD)、场发射扫描电镜(FE-SEM)及透射电镜(TEM)分析产物的相结构、晶粒尺寸及微观形貌。实验结果表明,随着配体L的增加,CePO_4的微观形貌由纳米棒逐渐转变成纳米线再生长成纳米颗粒。当n(Ce3+)∶n(L)=1.0∶1.0时,所合成的CePO_4纳米线长径比大且分散较均匀,直径为20~30nm、长约1~2μm。发现苯甲酸铵对产物的尺寸及长径比具有导向合成作用。荧光光谱分析表明n(Ce3+)∶n(L)=1.0∶1.0时所合成的CePO_4纳米线荧光强度最强,相同方法合成的Ce_(0.95)PO_4∶Tb_(0.05)纳米线具有较强的荧光性能。Nanostructured hexagonal phase CePO 4 and Ce 0.95 PO 4∶Tb 0.05 nanowires were controllably synthesized through an ammonium benzoate-induced hydrothermal route （ammonium benzoate denote as L）. The structures, sizes and morphologies of the products were studied by X-ray powder diffraction （XRD）, field-emission scanning electronic microscopy （FE-SEM） and transmission electron microscope （TEM）. The results indicated that when the amount of L molar ratio was increased, the morphology of CePO 4 nanostructures changed from nanorods into nanowires and then grew into nanoparticles. When the Ce 3＋ ∶L molar ratio was 1.0∶1.0, the uniform CePO 4 nanowires with high aspect ratio were obtained, which had diameters of about 20-30 nm and lengths of about 1-2 μm. The ammonium benzoate was found to play an important role for the synthesis of the products with different sizes and aspect ratio. The luminescence properties of the obtained products demonstrated that the CePO 4 nanowires prepared with Ce 3＋ ∶L molar ratios of 1.0∶1.0 exhibited strongest emission intensity. Simultaneously, Ce 0.95 PO 4∶Tb 0.05 nanowires had high enhanced luminescence.

关 键 词：苯甲酸铵 CePO4纳米线 水热合成 荧光 

分 类 号：O614.33[理学—无机化学]