One-dimensional single crystalline rare earth ion (Tm3+, Tb +3, and Eu3+) doped Y (OH)3 nanotubes with inner diameters of 20-110nm, outer diameters of 50-140nm, and 1-5νm in length were prepared for the first time by a rapid hydrothermal method within a short reaction period (5min) at subcritical temperature (320 °C) and high pressure (about40MPa). A temperature dependent nanostructure evolution study was performed under rapid hydrothermal conditions and the effects of other processing parameters such as concentration of KOH and reaction time were found to be key parameters for the formation of highly anisotropic crystal structures of rare earth hydroxide nanotubes. Rare earth ion (Tm3+, Tb +3, and Eu3+) doped Y2O3 nanotubes can be obtained after calcinations above 450 °C. The luminescent property of rare earth doped Y2O3 nanotubes was also explored and compared with reference samples prepared via a conventional co-precipitation method.
ASJC Scopus subject areas
- 化学 (全般)