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Rare earth europium composite fluorescent material using sodium acetate as matrix, and preparation method thereof

A rare earth fluorescent material and composite fluorescent technology, which is applied in the field of fluorescent materials, can solve the problems of difficult recovery of rare earth complexes, poor light and thermal stability, etc.

Pending Publication Date: 2020-01-31
FUYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Fluorescent materials of rare earth complexes have the advantages of unique molecular structure, photoluminescence mechanism, strong fluorescence and good monochromaticity, and are applied in many fields such as industry, agriculture, biology, etc., but their light and thermal stability are slightly poor. Moreover, in recent years, because rare earths have gradually been used as strategic resources, more and more attention has been paid to them. Therefore, the price of rare earths has continued to rise, and it is difficult to recycle rare earth complexes after use, which has led to greater restrictions on the application of rare earth complexes in many aspects limitations

Method used

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  • Rare earth europium composite fluorescent material using sodium acetate as matrix, and preparation method thereof
  • Rare earth europium composite fluorescent material using sodium acetate as matrix, and preparation method thereof
  • Rare earth europium composite fluorescent material using sodium acetate as matrix, and preparation method thereof

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preparation example Construction

[0108] (1) The preparation method of the composite fluorescent material is simple and easy;

[0109] (2) The composite fluorescent material has high fluorescence excitation intensity, high fluorescence emission intensity, high quantum yield, which can reach 29.88%, and long fluorescence lifetime;

[0110] (3) The particle size of the composite fluorescent material prepared by the method of the present invention is uniform and can be controlled within an appropriate particle size range;

[0111] (4) The composite fluorescent material of the present invention uses sodium acetate as a matrix, which reduces the cost of the fluorescent composite material and is expected to expand the application range of the rare earth luminescent material.

Embodiment 1

[0118] Weigh 1.0000g of dried sodium acetate into a 50ml beaker, add 30ml of absolute ethanol, put it into an ultrasonic cleaner, seal the mouth of the beaker with plastic wrap, and perform ultrasonic vibration for 30min;

[0119] Weigh 0.2781g of TPPO (1mmol), 0.3339g of TTA (1.5mmol) and 0.1294g of europium chloride hexahydrate respectively, add to the reaction flask, then add 20mL of absolute ethanol, stir, and ultrasonically vibrate for 30min to obtain a solution ;

[0120] Place the above reaction bottle in the heating mantle, turn on the stirring, and connect the reflux device, then add the pretreated sodium acetate solution dropwise into the reaction bottle, the dropwise addition is completed in 10 minutes, heat to reflux reaction, and react for 2 hours;

[0121] After completion of the reaction, cool down to room temperature, filter, put the obtained filter cake into an oven for drying at 80° C., and dry for 1 hour to obtain the product; denoted as E1.

Embodiment 2

[0123] The method used in this embodiment is the same as in Example 1, except that the amount of sodium acetate is different, and the amount of sodium acetate in this embodiment is 2 g; the product obtained is denoted as E2.

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Abstract

The invention provides a rare earth europium composite fluorescent material using sodium acetate as a matrix, and a preparation method thereof, wherein the europium coordination compound composite fluorescent material is prepared by using europium ions as a luminous body, using triphenyl phosphine oxide (TPPO) and 2-thenoyltrifluoroacetone (TTA) as organic ligands and using sodium acetate as a matrix through a reaction under set conditions, and is characterized. According to the invention, the cost of the luminescent material is reduced, and the prepared material is long in service life, highin quantum yield, high in fluorescence intensity and good in fluorescence performance.

Description

technical field [0001] The invention relates to the field of fluorescent materials, in particular to a rare earth europium composite fluorescent material with sodium acetate as a matrix and a preparation method thereof. Background technique [0002] Rare earth elements refer to group IIIB in the periodic table of elements, 21st element scandium Sc, 39th element yttrium Y and 57-71 lanthanum La, cerium Ce, praseodymium Pr, neodymium Nd, promethium Pm, samarium Sm, europium Eu, gadolinium Gd , terbium Tb, dysprosium Dy, holmium Ho, erbium Er, thulium Tm, ytterbium Yb, lutetium Lu, a total of 17 elements. Containing rare earth elements as matrix components, activators, co-activators or dopants is a general term for rare earth fluorescent materials. [0003] Today, rare earth elements have been widely used in electronic equipment, petrochemical, metallurgy, machinery, energy, light industry, environmental protection, agriculture and other fields. Further application of rare ea...

Claims

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Application Information

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IPC IPC(8): C09K11/06
CPCC09K11/06C09K2211/182
Inventor 陶栋梁金凤宋苗苗王永忠姜广鹏陈继堂张琳崔玉民张宏李慧泉
Owner FUYANG NORMAL UNIVERSITY
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