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Rare earth composite fluorescent material using calcium phosphate as matrix, and preparation method thereof

A technology of compound fluorescence and rare earth complexes, applied in the field of fluorescent materials, can solve the problems of difficulty in recycling rare earth complexes, poor light and thermal stability, etc.

Active Publication Date: 2020-02-14
FUYANG NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 composite fluorescent material using calcium phosphate as matrix, and preparation method thereof
  • Rare earth composite fluorescent material using calcium phosphate as matrix, and preparation method thereof
  • Rare earth composite fluorescent material using calcium phosphate as matrix, and preparation method thereof

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preparation example Construction

[0111] (2) The preparation method of the composite fluorescent material is simple and easy;

[0112] (3) The composite fluorescent material prepared by using the method of the present invention reduces the consumption of rare earth europium and ligands by introducing hydroxyapatite, reduces the cost, and also reduces the possible pollution caused by the product. It is environmentally friendly and efficient, and is expected to expand the use of rare earth luminescent materials. application range.

Embodiment 1

[0115] Weigh 1.0000g of dried hydroxyapatite into a 50ml beaker, add 10ml of absolute ethanol, put it into an ultrasonic cleaner, seal the mouth of the beaker with plastic wrap, and perform ultrasonic vibration for 30min;

[0116] Weigh 0.2781g of TPPO (1mmol), 0.3339g of TTA (1.5mmol) and 0.1294g of europium chloride hexahydrate respectively into the reaction flask, then add 20mL of absolute ethanol, stir, and ultrasonically vibrate for 30min to obtain a solution ;

[0117] Place the above reaction bottle in the heating mantle, turn on the stirring, and connect the reflux device, then add the pretreated hydroxyapatite solution dropwise into the reaction bottle, the dropwise addition is completed in 10 minutes, heat to reflux reaction, and react for 2 hours;

[0118] After the reaction was completed, the temperature was lowered to 55°C, filtered, and the obtained filter cake was dried in an oven at a temperature of 100°C for 3 hours to obtain the product; denoted as C1.

Embodiment 2

[0120] The method used in this example is the same as that in Example 1, except that the amount of hydroxyapatite used is different. The amount of hydroxyapatite used in this example is 2 g; the obtained product is marked as C2.

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Abstract

The invention provides a rare earth composite fluorescent material using calcium phosphate as a matrix, and a preparation method thereof, wherein the composite fluorescent material is prepared by using rare earth ions as a light-emitting body, using alpha-thiophene formyl trifluoroacetone (TTA) and triphenyl phosphine oxide (TPPO) as organic ligands and using hydroxyapatite as a matrix under set conditions, and is characterized. According to the invention, the cost of the lighte-emitting material is reduced, and the prepared material has characteristics of long service life, high quantum yield, high fluorescence intensity, good fluorescence property, environmental protection and high efficiency.

Description

technical field [0001] The invention relates to the field of fluorescent materials, in particular to a rare earth europium complex composite fluorescent material with calcium phosphate as a matrix and a preparation method thereof. Background technique [0002] Lanthanides refer to the 15 elements with atomic numbers from 57 to 71 in the periodic table of elements, but since the two elements scandium (Sc) and yttrium (Y) have similar chemical properties to the above-mentioned 15 elements, these 17 elements together called rare earth elements. But the so-called rare earth elements are not rare, and the reserves of most rare earth elements in the earth's crust are relatively high, even 10 times higher than silver (Ag). Not only are their atomic structures similar, but their ionic radii are also similar. In addition, rare earth elements are also closely symbiotic in nature. [0003] Today, rare earth elements have been widely used in electronic equipment, petrochemical, metall...

Claims

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Application Information

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IPC IPC(8): C07F5/00C09K11/06
CPCC07F5/003C09K11/06C09K2211/182
Inventor 陶栋梁金凤宋苗苗车红彪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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