title: Ultrasonic assisted synthesis, characterization and influence factors of monodispersed dumbbell-like YF(3) nanostructures.
abstract: In the present paper, we reported the successful synthesis of dumbbell-like YF(3) nanostructures with a high yield in a mixed system of water/N,N-dimethylformamide (DMF) under the assistance of ultrasound waves of 40kHz with the ultrasonic power of 100% (200W) at 65 degrees C for 2h, employing Y(2)O(3) (99.99%) and NH(4)F as the starting reactants. The product was characterized by means of powder X-ray diffraction (XRD), energy dispersive spectrometry (EDS), transmission electron microscopy (TEM), selected area electron diffraction (SAED) pattern and field-emission scanning electron microscopy (SEM). Some factors influencing the morphology of YF(3) nanostructures, including the ultrasonic time and power, the amount of NH(4)F, and the ratio of water/DMF, were systematically investigated. Research showed that the morphology of YF(3) could be tuned by the volume ratio of water/DMF. The roles of DMF and the ultrasonic wave in the formation of YF(3) nanostructures were discussed.
authors.affiliation: College of Chemistry and Materials Science, Anhui Key Laboratory of Functional Molecular Solids, Anhui Normal University, Wuhu 241000, PR China. niyh@mail.ahnu.edu.cn
authors.forename: Yonghong
authors.initials: Y
authors.lastname: Ni
authors.forename: Guoyan
authors.initials: G
authors.lastname: Li
authors.forename: Jianming
authors.initials: J
authors.lastname: Hong
mesh_terms: D004126:Dimethylformamide / Q000737:chemistry; D005459:Fluorides / Q000737:chemistry*; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D049329:Nanostructures / Q000737:chemistry*; D014465:Ultrasonics; D014867:Water / Q000737:chemistry; D014961:X-Ray Diffraction; D015019:Yttrium / Q000737:chemistry*
chemical_list: D014867:Water; D015019:Yttrium; D004126:Dimethylformamide; D005459:Fluorides