title: Synthesis, characterization, and photoluminescence property of LaCO3OH microspheres.
abstract: Novel LaCO3OH microspheres with the hexagonal phase were synthesized by a hydrothermal method using La(NO3)(3).6H2O and urea CO(NH2)2 as the starting materials. Various experimental parameters were examined, such as the reaction temperature, the reaction time, and the molar ratios of the starting reagents. The as-synthesized products were characterized by powder X-ray diffraction, transmission electron microscopy, field-emission scanning electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and photoluminescence (PL). The PL result showed one broad emission band centered at 438 nm (lambdaex=365 nm) of the pure LaCO3OH microspheres. In addition, a possible formation mechanism of LaCO3OH microspheres and the PL property of pure LaCO3OH microspheres were discussed.
authors.affiliation: Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, People's Republic of China. zyj@ustc.edu.cn
authors.forename: Youjin
authors.initials: Y
authors.lastname: Zhang
authors.forename: Kaidong
authors.initials: K
authors.lastname: Han
authors.forename: Tao
authors.initials: T
authors.lastname: Cheng
authors.forename: Zhiyong
authors.initials: Z
authors.lastname: Fang
mesh_terms: D007811:Lanthanum / Q000737:chemistry*; D049449:Luminescence; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D008863:Microspheres; D010777:Photochemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D014961:X-Ray Diffraction
chemical_list: C119467:lanthanum carbonate; D007811:Lanthanum