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Method for preparing calcium lanthanum molybdate europium-doped luminous olive sphere

A football, lanthanum molybdate technology, applied in the directions of luminescent materials, chemical instruments and methods, can solve the problems of uneven appearance of lanthanum molybdate calcium doped europium luminescent football, affecting the intensity of luminescent powder, etc. The effect of low equipment requirements and low reaction temperature

Inactive Publication Date: 2017-08-04
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a method for preparing lanthanum calcium molybdate-doped europium luminous rugby using a hydrothermal method. Solved the technical problem that the lanthanum molybdate calcium-doped europium luminous rugby obtained by the method in the prior art was uneven in appearance and seriously affected the intensity of the luminescent powder

Method used

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  • Method for preparing calcium lanthanum molybdate europium-doped luminous olive sphere
  • Method for preparing calcium lanthanum molybdate europium-doped luminous olive sphere
  • Method for preparing calcium lanthanum molybdate europium-doped luminous olive sphere

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Embodiment 1

[0034] A kind of lanthanum molybdate calcium doped europium luminescent football, its chemical formula is CaLa 1.90 Eu 0.10 (MoO 4 ) 4 .

[0035] The preparation method of the above-mentioned red calcium lanthanum molybdate doped with europium luminous rugby, specifically comprises the following steps:

[0036] Add europium oxide into a nitric acid solution with a concentration of 5-40%, stir and dissolve at 40-60°C to prepare a europium nitrate solution with a concentration of 0.05±0.001mol / L; mix lanthanum nitrate, calcium nitrate and molybdenum Dissolve sodium nitrate in deionized water to prepare lanthanum nitrate solution with a concentration of 1.00±0.001mol / L, calcium nitrate solution with a concentration of 1.00±0.001mol / L and sodium molybdate solution with a concentration of 1.00±0.001mol / L.

[0037] Measure 1.95±0.01ml of lanthanum nitrate, 1.00±0.01ml of calcium nitrate and 2.00±0.01ml of europium nitrate solution in a beaker, stir and mix thoroughly to obtain a...

Embodiment 2

[0043] A kind of lanthanum molybdate calcium doped europium luminescent football, its chemical formula is CaLa 1.90 Eu 0.10 (MoO 4 ) 4 .

[0044] The preparation method of the above-mentioned red calcium lanthanum molybdate doped with europium luminous rugby, specifically comprises the following steps:

[0045] Add europium oxide into a nitric acid solution with a concentration of 5-40%, stir and dissolve at 40-60°C to prepare a europium nitrate solution with a concentration of 0.05±0.001mol / L; mix lanthanum nitrate, calcium nitrate and molybdenum Dissolve sodium nitrate in deionized water to prepare lanthanum nitrate solution with a concentration of 1.00±0.001mol / L, calcium nitrate solution with a concentration of 1.00±0.001mol / L and sodium molybdate solution with a concentration of 1.00±0.001mol / L.

[0046] Measure 1.95±0.01ml of lanthanum nitrate, 1.00±0.01ml of calcium nitrate and 2.00±0.01ml of europium nitrate solution in a beaker, stir and mix thoroughly to obtain a...

Embodiment 3

[0051] A kind of lanthanum molybdate calcium doped europium luminescent football, its chemical formula is CaLa 1.90 Eu 0.10 (MoO 4 ) 4 .

[0052] The above-mentioned preparation method of a red calcium lanthanum molybdate doped with europium luminous football comprises the following steps: adding europium oxide into a nitric acid solution with a concentration of 5-40%, stirring and dissolving at 40-60°C, and preparing Europium nitrate solution with a concentration of 0.05±0.001mol / L; lanthanum nitrate, calcium nitrate and sodium molybdate were dissolved in deionized water to prepare lanthanum nitrate solution with a concentration of 1.00±0.001mol / L, 1.00±0.001mol / L calcium nitrate solution and 1.00±0.001mol / L sodium molybdate solution.

[0053] Measure 1.95±0.01ml of lanthanum nitrate, 1.00±0.01ml of calcium nitrate and 2.00±0.01ml of europium nitrate solution in a beaker, stir and mix thoroughly to obtain a mixed solution;

[0054] Add 0.25g of glutamic acid to the mixe...

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Abstract

The invention discloses a method for preparing a calcium lanthanum molybdate europium-doped luminous olive sphere. The method disclosed by the invention comprises the following steps: mixing a lanthanum nitrate solution, a calcium nitrate solution and a europium nitrate solution; adding a complexing agent and sodium molybdate, stirring at a normal temperature so as to obtain a reaction precursor solution; transferring the reaction precursor solution into a hydrothermal reactor for carrying out a hydrothermal reaction; cooling, centrifuging and washing after the hydrothermal reaction is ended, thereby obtaining the calcium lanthanum molybdate europium-doped luminous olive sphere sample. The preparation method disclosed by the invention is low in reaction temperature, low in equipment requirement and simple in operation; the prepared calcium lanthanum molybdate europium-doped luminous olive sphere is regular in morphology, uniform in size and excellent in luminous property.

Description

technical field [0001] The invention belongs to the technical field of rare earth luminescent materials, and relates to a luminescent football, in particular to a preparation method of a calcium lanthanum molybdate-doped europium luminescent football. Background technique [0002] White light LED has the advantages of small size, high luminous efficiency, long life, fast response, safe use, environmental protection and no pollution, etc., so it is widely used in many fields such as indoor lighting, LCD backlight, information display, traffic sign lights, etc., and gradually began to It has become an eye-catching fourth-generation lighting source instead of incandescent lamps, tricolor fluorescent lamps and high-pressure gas discharge lamps. However, due to the lack of red light components in white light, white LED lighting sources have many problems such as low luminous efficiency, poor color rendering and poor color reproduction of the light source. Therefore, the synthesi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78
CPCC09K11/7794
Inventor 孔令站肖秀珍卢冠忠沈绍典毛东森
Owner SHANGHAI INST OF TECH
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