The Eu3＋-doped La2Zr207 phosphor with rod-like morphology was successfully synthesized by conventional solid state reaction and hydrothermal method. X-ray diffraction patterns, transmission electron microscopy, and photoluminescence spectra were employed to charac- terize its structure and morphology as well as luminescent properties. The results indicated that the red-emitting phosphor La2Zr207：Eu3＋ had well crystallized and belonged to the cubic structure with space group of Fd3m. The as-obtained product mainly appeared as straight nanorods with an average diameter of 47 nm and length of 50-700 nm. The pos- sible growth mechanism was also discussed. It was found that under blue excitation with a wavelength of 466 nm, the La2Zr2OT：Eu3＋ phosphor exhibited a characteristic red emission at 616 nm that was attributed to the hypersensitive 5D0--＊TF2 electric dipole transition of Eu3＋ ions. Meanwhile, it was more interesting to note that the emission of 5D1--＊TFj （J=0, 1, 2） transitions and the splitting patterns of 5D0---＋TFJ （J--l, 2, 4） transitions of Eu3＋ ions can be observed in the luminescent spectra of La2Zr207：Eu3＋. It was demonstrated that Eu3＋ preferred to occupy a low symmetry site.
Well-crystallized with excellent luminescent cessfully synthesized by a simple solid-state properties, Tb（BO2）3 nanorods were first suc- method with Ag as catalyst. The result of X- ray diffraction showed that the Tb（BO2）3 nanorods could be well-crystallized at 700 ℃. As-prepared straight nanorods of Tb（BO2）3 had the typical diameters in the range of 100-200 nm, the thickness of 30 50 nm, and the length up to 3 μm by transmission electron microscopy, and the corresponding selected area electron diffraction indicated that the nanorod calcined at 700 ℃ was single-crystalline. Based on the fact that Ag nanoparticles attached to the tips and middles of the Tb（BO2）3 nanorods, a growth model of the Tb（BO2）3 nanorods was proposed. Photoluminescence spectra under excitation at 369 nm showed that these Tb（BO2）3 phosphors had a green emission at 546 nm, which is ascribed to 5D4→7F5 transition. The effect of calcining temperature on the structures, morphologies, and luminescent properties of Tb（BO2）3 phosphors were studied.
