Nano-preparation promoting effectively luminescent properties of one-dimensional rare earth oxides

• Published in: Journal of rare earths 2012-11, Vol.30 (11), p.1096-1101
• Main Author: 李俊峰 卢冠忠 谢宝庚 王艳芹 郭耘 郭杨龙
• Format: Article
• Language: English
• Subjects: Eu3+ dopant; hydrothermal synthesis; luminescence property; Nanocomposites; Nanomaterials; Nanostructure; one-dimensional morphology; Photoluminescence; Rare earth compounds; Rare earth metals; rare earth oxides; Scanning electron microscopy; Surfactants; 一维; 光致发光性质; 发光性能; 扫描电子显微镜; 水热法合成; 稀土氧化物; 纳米氧化镧; 透射电子显微镜
• ISSN: 1002-0721; 2509-4963
• DOI: 10.1016/S1002-0721(12)60186-0

Rare earth （La, Nd and Tb） oxides with one-dimensional micro/nanostmcatres were synthesized hydrothermally under facile and mild conditions with two surfactants, and characterized by X-ray diffraction （XRD）, thermal gravimetry （TG）, scanning electron microscopy （SEM）, transmission electron microscopy （TEM） and photoluminescence. The results showed that the synthesized rare earth oxides behaved regular nano- and micro-scale structures. And the morphologies of samples depended on the radii of rare earth ions, with the help of two sur- factants of sodium dodecyl sulfonic and PEG 600. Nanocrystalline La2O3：Eu^3＋ possessed good photoluminescence （PL） property and might be used as a nanosized phosphor, its PL intensity was akered by the doping Eu^3＋ concentration and the optimum concentration of Eu^3＋ was 3 mol.%. In comparison with bulk Eu^3＋/La2O3, Eu^3＋/nano-La2O3 showed better photoluminescence property, nearly equal to that of nanocrtstalline La2O3：Eu^3＋. Tb4O7 microwires showed interesting photoluminescence properties.