Preparation method of yttrium phosphate vanadate europium-doped or samarium-doped luminescent microspheres

A technology of luminescent microspheres and yttrium phosphovanadate, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of uneven morphology of yttrium phosphovanadate-doped europium or samarium luminescent microspheres, affecting the intensity of luminescent powder, etc. Achieve the effect of being suitable for large-scale production, low equipment requirements, and low reaction temperature

Inactive Publication Date: 2016-03-23
SHANGHAI APPLIED TECHNOLOGIES COLLEGE
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Problems solved by technology

[0005] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a method for preparing yttrium phosphovanadate-doped europium or samarium luminescent microspheres. It solves the technical problem that the morphology of yttrium phosphovanadate-doped europium or samarium luminescent microspheres obtained by the method in the prior art is not uniform, which seriously affects the intensity of luminescent powder

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  • Preparation method of yttrium phosphate vanadate europium-doped or samarium-doped luminescent microspheres
  • Preparation method of yttrium phosphate vanadate europium-doped or samarium-doped luminescent microspheres

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Embodiment 1

[0044] A red europium-doped yttrium phosphovanadate luminescent microsphere, its chemical formula is Y 0.95 Eu 0.05 P 0.3 V 0.7 o 4 .

[0045] The above-mentioned preparation method of red europium-doped yttrium phosphovanadate luminescent microspheres specifically comprises the following steps:

[0046] Adding yttrium oxide and europium oxide into the dilute nitric acid solution, stirring and dissolving under heating conditions, respectively preparing yttrium nitrate solution with a concentration of 0.4±0.01mol / L and europium nitrate solution with a concentration of 0.05±0.001mol / L;

[0047] Measure 4.75±0.01ml of yttrium nitrate and 2.00±0.01ml of europium nitrate solution in a beaker, stir and mix thoroughly to obtain a mixed solution;

[0048] Add 0mmol EDTA to the mixed solution obtained above, and stir for 1h;

[0049] Dissolve 1.4mmol ammonium metavanadate and 0.6mmol ammonium dihydrogen phosphate in nitric acid solution, stir to dissolve, add the mixed solution o...

Embodiment 2

[0053] A red europium-doped yttrium phosphovanadate luminescent microsphere, its chemical formula is Y 0.95 Eu 0.05 P 0.3 V 0.7 o 4 .

[0054] The above-mentioned preparation method of red europium-doped yttrium phosphovanadate luminescent microspheres specifically comprises the following steps:

[0055] Adding yttrium oxide and europium oxide into the dilute nitric acid solution, stirring and dissolving under heating conditions, respectively preparing yttrium nitrate solution with a concentration of 0.4±0.01mol / L and europium nitrate solution with a concentration of 0.05±0.001mol / L;

[0056] Measure 4.75±0.01ml of yttrium nitrate and 2.00±0.01ml of europium nitrate solution in a beaker, stir and mix thoroughly to obtain a mixed solution;

[0057] Add 2±0.01mmol EDTA to the mixed solution obtained above, and stir for 1h;

[0058] Dissolve 1.4mmol ammonium metavanadate and 0.6mmol ammonium dihydrogen phosphate in nitric acid solution, stir to dissolve, add the mixed solut...

Embodiment 3

[0061] A red europium-doped yttrium phosphovanadate luminescent microsphere, its chemical formula is Y 0.95 Eu 0.05 P 0.3 V 0.7 o 4 .

[0062] The above-mentioned preparation method of red europium-doped yttrium phosphovanadate luminescent microspheres specifically comprises the following steps:

[0063] Adding yttrium oxide and europium oxide into the dilute nitric acid solution, stirring and dissolving under heating conditions, respectively preparing yttrium nitrate solution with a concentration of 0.4±0.01mol / L and europium nitrate solution with a concentration of 0.05±0.001mol / L;

[0064] Measure 4.75±0.01ml of yttrium nitrate and 2.00±0.01ml of europium nitrate solution in a beaker, stir and mix thoroughly to obtain a mixed solution;

[0065] Add 4±0.01mmol EDTA to the mixed solution obtained above, and stir for 1h;

[0066] Dissolve 1.4mmol ammonium metavanadate and 0.6mmol ammonium dihydrogen phosphate in nitric acid solution, stir to dissolve, add the mixed solut...

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Abstract

The invention provides a preparation method of yttrium phosphate vanadate europium-doped or samarium-doped luminescent microspheres. The method comprises the steps of firstly, compounding yttrium oxide and europium oxide or samarium oxide into nitric acid solutions; mixing the yttrium nitrate solution with the europium nitrate solution (or the samarium nitrate solution); adding a complexing agent to an obtained mixed solution, and conducting stirring at the normal temperature of 25 + / - 1 DEG C; stirring NH<4>VO<3>, nitric acid, NH<4>H<2>PO<4> and water, obtaining a clear light-yellow solution, adding the obtained mixed turbid solution to the light-yellow solution, adjusting pH with nitric acid and ammonia water, conducting stirring and mixing, obtaining a yellow turbid solution, transferring the yellow turbid solution into a hydro-thermal reaction kettle for a hydro-thermal reaction, conducting cooling, centrifugation and washing after the hydro-thermal reaction is ended, and obtaining the yttrium phosphate vanadate europium-doped or samarium-doped luminescent microspheres. The preparation method has the advantages of being low in reaction temperature, low in equipment requirement and simple in operation, and the obtained yttrium phosphate vanadate europium-doped or samarium-doped luminescent microspheres are controllable in morphology and good in luminescence property.

Description

field of invention [0001] The invention belongs to the field of rare earth luminescent materials, and relates to a luminescent microsphere, in particular to a preparation method of yttrium phosphovanadate-doped europium or samarium luminescent microsphere. Background technique [0002] Over the past few decades, rare earth phosphors have been widely used in fluorescent lamps, cathode ray tubes, plasma flat panel displays, field emission displays, and X-ray imaging technology. However, reducing the particle size of the phosphor can improve the resolution of the display, and can increase the coating density and bond rheology of the display to reduce the amount of phosphor (R.P.Rao, J.Lumin., 113, 271 (2005)). Therefore, the synthesis of rare earth micro phosphors has attracted much attention. [0003] Among the numerous rare earth vanadates, YVO 4 It is currently the most widely used matrix material for rare earth luminescent materials, and is used to manufacture high-pressu...

Claims

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Application Information

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IPC IPC(8): C09K11/83
Inventor 安志彬肖秀珍卢冠忠沈绍典毛东森
Owner SHANGHAI APPLIED TECHNOLOGIES COLLEGE
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