title: Size-tailored synthesis and luminescent properties of three-dimensional BaMoO4 , BaMoO4 :Eu(3+) micron-octahedrons and micron-flowers via sonochemical route.
abstract: Almost monodisperse three-dimensional (3D) BaMoO4, BaMoO4 :Eu(3+) micron-octahedrons and micron-flowers were successfully prepared via a large-scale and facile sonochemical route without using any catalysts or templates. X-Ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy dispersion X-ray (EDS), Fourier transform infrared (FTIR) and photoluminescence (PL) spectroscopy were employed to characterize the as-obtained products. It was found that size modulation could be easily realized by changing the concentrations of reactants and the pH value of precursors. The formation mechanism for micron-octahedrons and micron-flowers was proposed on the basis of time-dependent experiments. Using excitation wavelengths of 396 or 466 nm for BaMoO4 :Eu(3+) phosphors, an intense emission line at 614 nm was observed. These phosphors might be promising components with possible application in the fields of near UV- and blue-excited white light-emitting diodes. Simultaneously, this novel and efficient pathway could open new opportunities for further investigating the properties of molybdate materials.
authors: College of Chemistry, Jilin University, Changchun, 130026, People's Republic of China.
authors: Junjun
authors: J
authors: Zhang
authors: Linlin
authors: L
authors: Li
authors: Wenwen
authors: W
authors: Zi
authors: Lianchun
authors: L
authors: Zou
authors: Shucai
authors: S
authors: Gan
authors: Guijuan
authors: G
authors: Ji
mesh_terms: D060326:Chemistry Techniques, Synthetic; D005063:Europium / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D049408:Luminescent Agents / Q000138:chemical synthesis / Q000737:chemistry*; D008163:Luminescent Measurements; D008855:Microscopy, Electron, Scanning; D015394:Molecular Structure; D008982:Molybdenum / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D014961:X-Ray Diffraction
chemical_list: D049408:Luminescent Agents; C044659:molybdate; D005063:Europium; D008982:Molybdenum
keywords: BaMoO4:Eu3+; luminescence; morphology; sonochemistry