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Low-temperature solid-phase method for simply and efficiently preparing rare earth nano luminescent material

A kind of rare earth nanomaterials, high-efficiency technology, applied in the direction of luminescent materials, chemical instruments and methods, climate sustainability, etc., can solve the problems of lowering the reaction temperature, long reaction time, and incapable of large-scale preparation. The effect of lifting, lowering the threshold of equipment conditions, and shortening the action time

Pending Publication Date: 2022-08-09
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention aims to provide a simple and efficient low-temperature solid-phase method for preparing rare earth nanomaterials, so as to avoid the cumbersome process of the traditional preparation method, the long time required for the reaction and the situation that cannot be prepared in large quantities, and at the same time reduce the The temperature of the reaction is conducive to maximizing the use of energy

Method used

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  • Low-temperature solid-phase method for simply and efficiently preparing rare earth nano luminescent material
  • Low-temperature solid-phase method for simply and efficiently preparing rare earth nano luminescent material
  • Low-temperature solid-phase method for simply and efficiently preparing rare earth nano luminescent material

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Effect test

Embodiment 1

[0032] Example 1 (upconversion material)

[0033] like figure 1 shown to prepare NaF 4 : 7Yb, 1Er as an example, further state the method of the present invention.

[0034] S1 takes the amount of preparing 6 mmol as an example, and weighs NaF and YbCl respectively 3 , ErCl 3 (molar ratio of 0.78:0.2:0.02), it was placed in a 50 mL beaker, 40 mL of water was added, and the solid was dissolved under magnetic stirring.

[0035] S2 Place the beaker on the heating table, set the temperature to 90 °C, and heat while stirring. After the reaction for about 1 hour, the water is completely volatilized, and the heating is stopped when the remaining dry white powder.

[0036] S3 collect the white powder in the beaker in a corundum crucible, place it on a heating table, and set the temperature of the heating table to 200°C. When the temperature of the heating table reaches 200°C, the timing is started, and the heating is stopped after 2 hours.

[0037] After S4 stops heating, when th...

Embodiment 2

[0040] Example 2 (down conversion material)

[0041] like figure 1 shown to prepare NaF 4 : 30Yb, 5Er, 5Ce are taken as examples to further state the method of the present invention.

[0042] S1 takes the preparation of 6 mmol as an example, and weighs NaF and YbCl respectively 3 , ErCl 3 , CeCl 3(molar ratio of 0.7:0.2:0.05:0.05), it was placed in a 50 mL beaker, 40 mL of water was added, and the solid was dissolved under magnetic stirring.

[0043] S2 Place the beaker on the heating table, set the temperature to 90 °C, and heat while stirring. After the reaction for about 1 hour, the water is completely volatilized, and the heating is stopped when the remaining dry white powder.

[0044] S3 collect the white powder in the beaker in a corundum crucible, place it on a heating table, and set the temperature of the heating table to 200°C. When the temperature of the heating table reaches 200°C, the timing is started, and the heating is stopped after 2 hours.

[0045] Afte...

Embodiment 3

[0048] Example 3 (down conversion material)

[0049] like figure 1 shown to prepare NaF 4 : 5Eu as an example, further state the inventive method.

[0050] S1 takes the preparation of 6 mmol as an example, and weighs NaF and EuCl respectively. 3 (molar ratio of 0.95:0.05), it was placed in a 50 mL beaker, 40 mL of water was added, and the solid was dissolved under magnetic stirring.

[0051] S2 Place the beaker on the heating table, set the temperature to 90 °C, and heat while stirring. After the reaction for about 1 hour, the water is completely volatilized, and the heating is stopped when the remaining dry white powder.

[0052] S3 collect the white powder in the beaker in a corundum crucible, place it on a heating table, and set the temperature of the heating table to 200°C. When the temperature of the heating table reaches 200°C, the timing is started, and the heating is stopped after 2 hours.

[0053] After S4 stops heating, when the temperature drops to room tempera...

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Abstract

The invention discloses a low-temperature solid-phase method for simply and efficiently preparing rare earth nano materials, rare earth nano materials with different components can be prepared, the method comprises the following steps: after raw materials required by the rare earth nano materials with different components are respectively weighed according to molar weights in corresponding proportions, solids are dissolved under magnetic stirring; heating the clarified solution while stirring, and stopping heating until dry white powder remains in the beaker; the dried white powder is collected in a corundum crucible, timing is started when the temperature of a heating table reaches 200 DEG C, and heating is stopped after 2 h; after heating is stopped, the temperature is reduced to the room temperature, the powder in the corundum crucible is collected and ground in an agate mortar for several hours, the rare earth nano material corresponding to the raw material components can be obtained, and the remarkable luminescence phenomenon can be observed through laser irradiation with the corresponding wavelength.

Description

technical field [0001] The invention relates to the technical field of rare earth nanometer materials, in particular to a low-temperature solid-phase method for simply and efficiently preparing rare earth nanometer luminescent materials. Background technique [0002] Since the discovery of rare earth elements in the 18th century, rare earth elements have attracted the attention of many researchers. The special electronic structure of rare earth elements determines its special optical properties. Lanthanum-doped nanoparticles have a variety of fluorescent properties, such as: high luminescence color purity, can be excited at near-infrared (NIR) wavelengths; compared with other fluorescent probes (such as quantum dots, fluorescent proteins, etc.), its advantages are Low cytotoxicity, weak autofluorescence, high chemical stability, and low photobleaching. At present, the research of lanthanum-doped nanomaterials is still a hot spot in the field of rare earth. The commonly us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/61
CPCC09K11/7773C09K11/7733Y02B20/00
Inventor 吴蕙赵琪刘思璎詹求强
Owner SOUTH CHINA NORMAL UNIVERSITY
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