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Synthesis and luminescence of uniform europium-doped bismuth fluoride and bismuth oxyfluoride particles with different morphologies

Opened Access Synthesis and luminescence of uniform europium-doped bismuth fluoride and bismuth oxyfluoride particles with different morphologies

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Autor: Escudero Belmonte, Alberto
Moretti, Elisa
Ocaña Jurado, Manuel
Fecha: 2014
Publicado en: CrystEngComm, 16 (16), 3274-3286.
Tipo de documento: Artículo
Resumen: Facile synthesis routes have been developed for the preparation of uniform cubic bismuth fluoride and bismuth oxyfluoride particles. The synthesis methods are based on homogeneous precipitation reactions at 120 °C in solutions of bismuth nitrate and sodium tetrafluoroborate precursors in polyol-based solvents. Both the nature of the solvent and the heating modes (conventional or microwave-assisted heating) have a remarkable effect on the morphology and crystallinity of the resulting particles. Thus, polycrystalline spheres of α-BiF3 with a mean diameter ranging from 1.2 to 2 μm could be obtained by heating solutions with the appropriate reagent concentrations in a mixture of ethylene glycol and glycerol (1:1 by volume) using a conventional oven, whereas octahedral single crystals of α-BiOyF 3-2y with mean edges ranging from 250 nm to 920 nm precipitated when using a diethylene glycol-water mixture (8:2 in volume) as solvent and a microwave reactor for heating. To explain these differe...
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Cita: Escudero Belmonte, A., Moretti, E. y Ocaña Jurado, M. (2014). Synthesis and luminescence of uniform europium-doped bismuth fluoride and bismuth oxyfluoride particles with different morphologies. CrystEngComm, 16 (16), 3274-3286.
Tamaño: 3.251Mb
Formato: PDF

URI: https://hdl.handle.net/11441/69621

DOI: 10.1039/c3ce42462f

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