The effects of raw materials particle size and salt type on formation of nano-CaZrO3 from molten salts

Fazli, Rahman; Fazli, Mehdi; Golestani‐Fard, F.; Mirhabibi, A.R.

doi:10.1016/j.ceramint.2012.04.024

Cited by 10 publications

(2 citation statements)

References 14 publications

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“…However, as previously mentioned, the difference between the two mechanisms is mainly caused by the difference in the dissolution behavior of the oxides involved in the reaction in molten salt. According to the literature, , when the solubility of the two oxides involved in the reaction is three orders of magnitude different, the morphology of the synthetic powder is similar to that of the one with lower solubility (specific material), and it was judged as a “dissolution diffusion” mechanism. In this study, the synthesis mechanism of the powder should also be determined according to the morphology of the synthesized product, and the relationship between the dissolution behavior of the two oxides should be further discussed.…”

Section: Resultsmentioning

confidence: 99%

Effect of Raw Material Particle Size on the Synthesis of La₂Zr₂O₇ by the Molten Salt Method

Chen

Wang

et al. 2023

Inorg. Chem.

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In this study, a process based on the molten salt method was proposed to prepare La2Zr2O7 for improving the kinetic conditions of synthesis. Considering that the particle size of raw materials is an important factor that may have an effect on the kinetic process of synthesis, ZrO2 and La2O3 with different particle sizes are used as raw materials, and the synthesis experiment is carried out at 900–1300 °C through the combination of raw materials with different particle sizes. The results show that the particle size of ZrO2 plays an important role in the synthesis of La2Zr2O7. The “dissolution precipitation” mechanism of the synthesis process in the NaCl–KCl molten salt was confirmed by SEM image observation. Furthermore, the influence of the dissolution rate of each raw material on the synthesis reaction was studied by introducing the Noyes–Whitney equation and testing the specific surface area and solubility of each raw material, and it was confirmed that the particle size of ZrO2 was the limiting condition of the synthesis reaction, and use of ZrO2(Z50) with a nominal particle size of 50 nm could significantly improve the kinetic condition of the reaction, thus reducing the synthesis temperature, which can help realize the energy-saving and -efficient synthesis of pyrochlore La2Zr2O7.

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Section: Resultsmentioning

confidence: 99%

Effect of Raw Material Particle Size on the Synthesis of La₂Zr₂O₇ by the Molten Salt Method

Chen

Wang

et al. 2023

Inorg. Chem.

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“…Thus, searching for new strategy for the synthesis of phosphate‐based phosphors with desired morphology remains a challenge. Molten salt technique is one of the most effective and simplest methods to synthesize functional inorganic compounds with controllable compositions and morphologies . Usually, molten salts can provide ionic liquids as effective chemical reaction medium to facilitate mass migration and to improve reaction rate at a relative low temperature.…”

Section: Introductionmentioning

confidence: 99%

Molten‐Salt‐Assisted Synthesis of Na₃Bi(PO₄)₂:Eu³⁺ Nanoparticles with Strong Red Emission

Boyi

Yao

Liu

2019

Physica Status Solidi (a)

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Single phase Eu 3þ -doped Na 3 Bi(PO 4 ) 2 (NBPO) nanoparticles with different Eu 3þ concentrations are successfully synthesized by a molten-salten method using Na 3 PO 4 Á 12H 2 O both as reaction medium and as reactant. The influence of synthesis conditions such as the Na 3 PO 4 Á 12H 2 O content, heating temperature, and time on the crystal structure of the final products is investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). It reveals that pure phase Na 3 Bi(PO 4 ) 2 nanoparticles with size about 100 nm are successfully achieved when the mixture (molar ratio of 1:4 between Bi(NO 3 ) 3 Á 5H 2 O and Na 3 PO 4 Á 12H 2 O) is heated at 180 C for 12 h. After Eu 3þ -doping, NBPO:Eu 3þ nanoparticles exhibit bright red emission peaking at 620 nm under the excitation of the near ultraviolet (NUV) light. The luminescence is attributed to the electric dipole transition 5 D 0 ! 7 F 2 of Eu 3þ ions. The luminescent intensity of the NBPO:Eu 3þ phosphors is strongly dependent on the Eu 3þ content and concentration quenching occurred when the Eu 3þ concentration is larger than 8 mol%, which is attributed to dipole-dipole interaction. This work provides a green way for the synthesis of phosphate-based nanomaterials and suggests that Eu 3þdoped Na 3 Bi(PO 4 ) 2 has a great potential application in the lighting and display fields.

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Ceramic and Refractory Materials Based on it — a Review. Part 1: Methods of the Synthesis of Calcium Zirconate

Krasnyi,

Makarov,

Ikonnikov

et al. 2024

Glass Ceram

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The effects of raw materials particle size and salt type on formation of nano-CaZrO3 from molten salts

Cited by 10 publications

References 14 publications

Effect of Raw Material Particle Size on the Synthesis of La₂Zr₂O₇ by the Molten Salt Method

Effect of Raw Material Particle Size on the Synthesis of La₂Zr₂O₇ by the Molten Salt Method

Molten‐Salt‐Assisted Synthesis of Na₃Bi(PO₄)₂:Eu³⁺ Nanoparticles with Strong Red Emission

Ceramic and Refractory Materials Based on it — a Review. Part 1: Methods of the Synthesis of Calcium Zirconate

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The effects of raw materials particle size and salt type on formation of nano-CaZrO3 from molten salts

Cited by 10 publications

References 14 publications

Effect of Raw Material Particle Size on the Synthesis of La2Zr2O7 by the Molten Salt Method

Effect of Raw Material Particle Size on the Synthesis of La2Zr2O7 by the Molten Salt Method

Molten‐Salt‐Assisted Synthesis of Na3Bi(PO4)2:Eu3+ Nanoparticles with Strong Red Emission

Ceramic and Refractory Materials Based on it — a Review. Part 1: Methods of the Synthesis of Calcium Zirconate

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Effect of Raw Material Particle Size on the Synthesis of La₂Zr₂O₇ by the Molten Salt Method

Effect of Raw Material Particle Size on the Synthesis of La₂Zr₂O₇ by the Molten Salt Method

Molten‐Salt‐Assisted Synthesis of Na₃Bi(PO₄)₂:Eu³⁺ Nanoparticles with Strong Red Emission