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Preparation method of rare-earth yttrium vanadate

A technology of rare earth yttrium vanadate and yttrium vanadate, which is applied in chemical instruments and methods, vanadium compounds, inorganic chemistry, etc., can solve the problems of cumbersome preparation process, long reaction time, and insufficient environmental protection, and achieve simple preparation process and raw material composition The effect of less points and low cost

Inactive Publication Date: 2016-11-09
ANHUI UNIVERSITY OF ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a preparation method of rare earth yttrium vanadate to overcome the defects of cumbersome preparation process, long reaction time and insufficient environmental protection in the prior art

Method used

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  • Preparation method of rare-earth yttrium vanadate
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preparation example Construction

[0033] The preparation method of rare earth yttrium vanadate, using yttrium nitrate, sodium nitrate and sodium orthovanadate as raw materials, comprises the following steps:

[0034] 1) Prepare mixed suspension: use deionized water and NaNO 3 Prepare 18mL of mixed suspension of yttrium nitrate and sodium orthovanadate, wherein Y 3+ / VO 4 3- The molar concentration ratio is 1:1, NaNO 3 Concentration 1%;

[0035] 2) Hydrothermal reaction: transfer the mixed suspension into a closed container, seal it and place it in an oven at 180°C for 24 hours of reaction, and collect the solid as bundle-shaped yttrium vanadate. The obtained product was washed with deionized water and absolute ethanol, dried at 80°C for 6 hours, and tested for characterization. figure 1 (a) is the XRD pattern of obtained product, proves that obtained product is YVO 4 ; figure 2 It is the field emission scanning electron micrograph of the product, which shows that the product has a beam-like structure....

Embodiment 1

[0045] The preparation method of the rare earth yttrium vanadate of the present embodiment, the yttrium vanadate is in a beam structure, and the beam structure is prepared through the following steps:

[0046] 1) Prepare mixed suspension: use deionized water and NaNO 3 Prepare the mixed suspension of yttrium nitrate and sodium orthovanadate, wherein: Y 3+ Ions and VO 4 3- Ionic - The molar concentration ratio is 1.05:1; NaNO3 The concentration is 1%.

[0047] 2) Hydrothermal reaction: transfer the mixed suspension into a closed container, seal it and put it in an oven at 150°C for 8 hours to react, then collect the solid as bundle-shaped yttrium vanadate.

[0048] The specific preparation steps of the mixed suspension are as follows:

[0049] a) Use a mixture of deionized water and surfactant to prepare a mixed solution of yttrium nitrate and record it as liquid A;

[0050] b), and then use deionized water to prepare sodium orthovanadate solution and record it as B solut...

Embodiment 2

[0054] The preparation method of the rare earth yttrium vanadate of the present embodiment, the yttrium vanadate is in a beam structure, and the beam structure is prepared through the following steps:

[0055] 1) Prepare mixed suspension: use deionized water and NaNO 3 Prepare the mixed suspension of yttrium nitrate and sodium orthovanadate, wherein:

[0056] Y 3+ Ions and VO 4 3- Ionic - The molar concentration ratio is 1:1; NaNO 3 The concentration is 2%.

[0057] 2) Hydrothermal reaction: transfer the mixed suspension into a closed container, seal it and put it in an oven at 180°C for 12 hours of reaction, then collect the solid as bundle-shaped yttrium vanadate.

[0058] The specific preparation steps of the mixed suspension are as follows:

[0059] a), with deionized water and NaNO 3 The mixed solution of the mixture preparation yttrium nitrate is recorded as A liquid;

[0060] b), and then use deionized water to prepare sodium orthovanadate solution and record i...

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Abstract

The invention discloses a preparation method of rare-earth yttrium vanadate. Yttrium vanadate is of a sarciniform structure and is prepared by the following steps: (1) preparing a mixed suspension: preparing a yttrium nitrate and sodium orthovanadate mixed suspension by deionized water and a surfactant, wherein the molarity of Y<3+> / VO4<3-> is (1-1.2): 1, and the concentration of the surfactant is 0.8-3.2%; (2) enabling hydrothermal reaction: transferring the mixed suspension into a closed container, sealing, then placing in a drying oven for reaction at 150-200 DEG C for 8-24 h, and collecting the solid to obtain sarciniform yttrium vanadate. The preparation method can overcome the shortcomings of troublesome preparation procedure, long reaction time and poor environmental friendliness in the prior art.

Description

technical field [0001] The invention relates to a preparation method of rare earth yttrium vanadate. Background technique [0002] In recent years, rare earth vanadate (LnVO 4 ) due to its unique electronic structure, large atomic magnetic moment, and strong spin-orbit effect, it exhibits good material properties such as magnetism, photocatalytic activity, chemical and thermal stability, electrical conductivity, and gas sensitivity. , luminescent materials, laser host materials, phosphorescent materials, dielectric materials, magnetoresistive materials and other fields have been widely used, especially the development speed of rare earth vanadate luminescent materials at home and abroad is amazing, forming a considerable production scale and vast market, its output value and economic benefits are very high, so it has attracted the attention of many experts and scholars. [0003] Rare earth vanadate materials have very rich optical properties, such as photoluminescence, ele...

Claims

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Application Information

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IPC IPC(8): C01G31/00
CPCC01G31/00C01P2002/72C01P2004/03C01P2004/10
Inventor 丁益张波任启芳
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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