The solubility of sodium and potassium fluorides in strontium fluoride

Федоров, П. П.; Mayakova, M. N.; Maslov, V. A.; Baranchikov, А. Е.; Иванов, В. К.; Pynenkov, A. A.; Uslamina,; Нищев, К. Н.

doi:10.17586/2220-8054-2017-8-6-830-834

Cited by 7 publications

(5 citation statements)

References 22 publications

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“…Courbion et al synthesized KGaF 4 from 3KCl:ZnCl 2 molten solution [55]. Fedorov et al [56,57] prepared CaF 2 and SrF 2 utilizing water soluble calcium and strontium chlorides as fluxes, respectively.…”

Section: Introductionmentioning

confidence: 99%

The Melt of Sodium Nitrate as a Medium for the Synthesis of Fluorides

et al. 2018

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The preparation of NaLnF 4 complexes, LnF 3 (Ln = La, Ce, Y) rare earth binary fluorides, CaF 2 and SrF 2 alkali earth fluorides, as well as mixtures of these compounds from their nitrates dissolved in molten NaNO 3 has been studied in order to select the ideal solvent for fluoride synthesis by spontaneous crystallization from flux. Sodium fluoride (NaF) was used as a fluorinating agent. The results of our experiments have confirmed that NaNO 3 melt is one of the most promising media for precipitating said inorganic fluoride materials within a broad temperature range (300-500 • C). Also, in contrast with precipitation/co-precipitation from aqueous solutions, our syntheses have resulted in obtaining equilibrium phases only.

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Section: Introductionmentioning

confidence: 99%

The Melt of Sodium Nitrate as a Medium for the Synthesis of Fluorides

et al. 2018

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“…NaF is considered a very specific fluorinating agent. On the one hand, according to the literature data in some cases, the use of NaF leads to Sr 1- [35,36], NaF-RF 3 , and/or NaRF 4 (where R = rare earth) [37] formation in water-based coprecipitation method. On the other hand, in spite of the possibility of NaF-RF 3 and/or NaRF 4 formation, the synthesis of NaF-LaF 3 and/or NaLaF 4 is considered as a very specific task.…”

Section: Elemental Analysismentioning

confidence: 99%

Characterization of Pr-Doped LaF₃ Nanoparticles Synthesized by Different Variations of Coprecipitation Method

Pudovkin

Koryakovtseva

Lukinova

et al. 2019

Journal of Nanomaterials

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A set of Pr3+:LaF3 nanoparticles (NPs) were synthesized via coprecipitation method at three stoichiometric proportions of La(NO3)3, Pr(NO3)3, and NaF (1 : 0.8, 1 : 1, and 1 : 6, respectively). Two ways of mixing of the La(NO3)3, Pr(NO3)3, and NaF solutions (dropwise and swift addition) were used. One sample was subjected to microwave (MW) treatment for 30, 90, and 180 min. All the samples were characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). For all the samples, optical spectroscopy experiments were carried out. The XRD data were analyzed via the Debye-Scherrer and Williamson-Hall methods. It was revealed that the way of mixing of the La(NO3)3, Pr(NO3)3, and NaF solutions strongly affects the shape of the NPs. The slow dropwise addition of the NaF solution leads to the plate-like NP (PLNP) formation; otherwise, the swift addition of the NaF solution leads to the formation of more sphere-like NPs (SLNPs). The size and regularity in shape of the NP increase with the increasing stoichiometric proportion of La(NO3)3, Pr(NO3)3, and NaF from 1 : 0.8 to 1 : 6. The size and regularity in shape of the SLNPs increase with the increasing time of MW treatment. The Debye-Scherrer and Williamson-Hall methods confirmed the anisotropic shape of the PLNPs. The Williamson-Hall method showed that the values of strain are almost similar for all the samples (around 14∗10-4). Optical spectroscopy experiments revealed that although all the samples have an equal chemical composition, the luminescence lifetimes for different samples differ between each other. The luminescence lifetime of the PLNPs is less than that of the SLNPs having an equal stoichiometric proportion of La(NO3)3, Pr(NO3)3, and NaF. The luminescence lifetime of the 1 : 1 SLNPs increases with the increasing time of MW treatment.

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“…Various fluorinating agents (HF, NH 4 F, NaF, KF, NaHF 2 , KHF 2 ) can be used in the synthesis of luminophore powders. [34][35][36] This causes the sodium 37,38 and potassium 38 cations to be incorporated into the crystal lattice of strontium fluoride resulting in changes in the emission properties.…”

Section: Introductionmentioning

confidence: 99%

Effect of the fluorinating agent type (NH₄F, NaF, KF) on the particle size and emission properties of SrF₂:Yb:Er luminophores

Ermakova,

Madirov,

Fedorov

et al. 2024

J. Mater. Chem. C

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The solubility of sodium and potassium fluorides in strontium fluoride

Cited by 7 publications

References 22 publications

The Melt of Sodium Nitrate as a Medium for the Synthesis of Fluorides

The Melt of Sodium Nitrate as a Medium for the Synthesis of Fluorides

Characterization of Pr-Doped LaF₃ Nanoparticles Synthesized by Different Variations of Coprecipitation Method

Effect of the fluorinating agent type (NH₄F, NaF, KF) on the particle size and emission properties of SrF₂:Yb:Er luminophores

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The solubility of sodium and potassium fluorides in strontium fluoride

Cited by 7 publications

References 22 publications

The Melt of Sodium Nitrate as a Medium for the Synthesis of Fluorides

The Melt of Sodium Nitrate as a Medium for the Synthesis of Fluorides

Characterization of Pr-Doped LaF3 Nanoparticles Synthesized by Different Variations of Coprecipitation Method

Effect of the fluorinating agent type (NH4F, NaF, KF) on the particle size and emission properties of SrF2:Yb:Er luminophores

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Characterization of Pr-Doped LaF₃ Nanoparticles Synthesized by Different Variations of Coprecipitation Method

Effect of the fluorinating agent type (NH₄F, NaF, KF) on the particle size and emission properties of SrF₂:Yb:Er luminophores