The Fabrication of One-Dimensional BaAl₁₂O₁₉:Mn²⁺ Phosphors by Electrospinning Method

Abstract

One-dimensional BaAl12O19:Mn2+ nanofibers were fabricated by electrostatic spinning method. The effects of some factors on the product preparation were investigated, such as the pH value of precursors; the proportion of citric acid; calcination temperatures, and then the optimal synthetic conditions was obtained. The calcination temperatures of optimal sample is only 1100 °C, less about 400 °C than that of the traditional solid state reaction method. X-ray diffraction, scanning electron microscopy, transmission electron microscopy and photoluminescence spectroscopy were adopted to detect the structure, grain size, morphology and optical properties of the nanofibers, respectively. The fiber samples with good crystallinity consist of a great quantity of nanoparticles. The size of each nanoparticle is below 50 nm and the fiber diameter is about 400 nm. Possible formation process of the nanofibers by electrostatic spinning was also discussed.

Luminescent Materials Based on Aluminates: A Review

“…[ 217,218 ] . To get over these disadvantages, various methods for the preparation of BaAl 12 O 19 :Mn 2+ phosphors, such as sol–gel, [ 211 ] combustion [ 219,220 ] reverse microemulsion, [ 214 ] spray pyrolysis, [ 221 ] electrospinning, [ 222 ] etc., have been used.…”

Electrospinning fabrication and luminescence properties of Lu2O2S:Eu3+fibers

“…During the reaction process, the decomposition of PVP and nitrates leads to the fracture of the obtained fibers. 13,[29][30][31] The double-crucible method proposed here is actually a solid-gas reaction, which has been proven to be an important method, which can not only retain the morphology of Lu2O2:Eu 3+ fibers, but can also fabricate Lu2O2S:Eu 3+ fibers with a pure phase at relatively low temperature. Obviously, since the 4f energy levels of Eu 3+ are hardly affected by the crystal field because of the shielding effect of 5s 2 5p 6 electrons, there is no remarkable shift in the positions of the emission peaks in Lu2O2S:Eu 3+ samples compared with Lu2O3:Eu 3+ systems.…”

“…[5][6][7] Notably, electrospinning is a convenient, costeffective and versatile method to produce 1D structure which has controllable morphology, good orientation and diameters ranging from tens of nanometers up to micrometers by tuning the spinning rate, solution viscosity, polymer molecular weight, surface tension, electric field, applied voltage and spinneret collector distance. [8][9][10][11][12][13] In the electrospinning process, 1D material including metallic oxide, rare earth oxyhalide, composite oxide and rare earth oxysulfide are obtained from a polymer solution ejected through electrostatic force between polymer solution and metal electrode, followed by evaporation of the solvent and a subsequent calcination process.…”