Synthesis of Eu-doped photoluminescent titania nanotubes via a two-step hydrothermal treatment
Synthesis of Eu-doped photoluminescent titania nanotubes via a two-step hydrothermal treatment
复制标题
DOI：
10.1088/0957-4484/17/9/027
复制
发表时间：
2006-05-14
期刊：
影响因子：
3.5
通讯作者：
Jin, Tetsuro
中科院分区：
文献类型：
--
作者：
Chi, Bo;Victorio, Erick S.;Jin, Tetsuro
本文采用两步水热法合成了Eu掺杂的二氧化钛纳米管。第一次水热处理是为了获得分散性好的Eu掺杂TiO 2纳米粉体。第二种处理是产生相应的纳米管。X射线衍射证实纳米管是由水合二氧化钛制成的。扫描电子显微镜和透射电子显微镜分析表明，多层纳米管的外径为12 nm，内径为4 nm，长度可达几微米。Eu掺杂的纳米管表现出与Eu 3+的D-5（0）-> F-7（j）跃迁相关的强发射线。通过两步水热处理制备的纳米管比相应的纳米粉体和直接通过一步水热处理制备的纳米管表现出更好的光致发光性能。还研究了纳米管的热处理的效果。
In this work, the synthesis of Eu-doped titania nanotubes was studied via a two-step hydrothermal treatment method. The first hydrothermal treatment was to obtain Eu-doped TiO2 nanopowders with good dispersity. The second treatment was to produce the corresponding nanotubes. X-ray diffraction confirmed that the nanotubes were made of hydrated titania. Scanning electron microscope and transmission electron microscope analyses showed that the multilayered nanotubes had an outer diameter of 12 nm and inner diameter of 4 nm, with length up to a few microns. The Eu-doped nanotubes exhibited strong emission lines associated with the D-5(0)-> F-7(j) transition of Eu3+. The nanotubes prepared by the two-step hydrothermal treatment exhibited better photoluminescence properties than the corresponding nanopowders and nanotubes prepared directly by the one-step hydrothermal treatment. The effect of the heat treatment of nanotubes was also studied.