关键词: 水热法；纳米TiO₂；Tb³⁺；PL光谱

Abstract:

The samples of rare earth Tb³⁺doped nanometer TiO₂ powder were prepared by means of hydrothermal process with Nbutyl titanate \[Ti(OBu)₄\] as the precursor and were studied by using PLE spectra and PL spectra. The results show that the Tb³⁺doped TiO₂ powder can produce the characteristic peaks of Tb³⁺ at room temperature, and the luminescence intensity is related to the conditions of preparation. When the reaction temperature is 125℃, reaction time is 72 h and the molar concentration of doped Tb³⁺ is 12%, the PL spectra intensity of Tb³⁺ doped TiO₂ powder arrives at the maximum.

Key words: hydrothermal, titanium dioxide, Tb³⁺, PL spectra