Rheological Phase Synthesis and Characterization of Lanthanum Salicylate and Luminescence Properties of Tb3+-Doped Lanthanum Salicylate
LI Liang-chao1，LI Zi-cheng2，YUAN Liang-jie2，ZHANG Ke-li2，SUN Ju-tang2
1. Department of Chemistry, Insititute of Physical Chemistry, Zhejiang Normal University, Jinhua 321000，China 2. Department of Chemistry, Wuhan University, Wuhan 430072，China
Abstract：Lanthanum salicylate and Tb3+-doped lanthanum salicylate were synthesized with the rheological phase reaction method. Elemental analysis, IR, TG, DTA and powder X-ray diffraction were investigated to determine the composition, crystal structure and coordination manner between the COO- and ion La3+ of lanthanum salicylate. The emission and excitation spectra of Tb3+-doped lanthanum salicylate were also discussed. Powder X-ray diffraction suggests that the compound has a layered monoclinic structure, and the lattice parameters are a=21.601 0 , b=13.801 5 (A), c=3.810 3 (A), β=97.11°, V=1 127.2 (A)3, Z=2, ρcal=1.621 g·cm-3 and ρexp=1.653 g·cm-3. The Tb3+-doped lanthanum salicylate exhibits very strong green luminescence of Tb3+ under the excitation of UV light. And the transition from 5D4to7F5 is the strongest one.
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