Terbium coordination compound composite fluorescent material taking inorganic salt as matrix, and preparation method thereof

A technology for compounding fluorescent and terbium complexes, which is applied in the field of fluorescent materials and can solve the problems of limited application of rare earth complexes and difficulties in the recovery of rare earth complexes

Pending Publication Date: 2020-03-31
FUYANG NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] 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 great limitations in the application of rare earth complexes in many aspects.

Method used

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  • Terbium coordination compound composite fluorescent material taking inorganic salt as matrix, and preparation method thereof
  • Terbium coordination compound composite fluorescent material taking inorganic salt as matrix, and preparation method thereof
  • Terbium coordination compound composite fluorescent material taking inorganic salt as matrix, and preparation method thereof

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preparation example Construction

[0037] In a second aspect, the present invention provides a method for preparing a composite fluorescent material containing a terbium complex, preferably preparing the above-mentioned composite fluorescent material, and the preparation method includes the following steps:

[0038] Step 1: mixing a terbium-containing compound with an organic acid;

[0039] Step 2: preparing matrix substances;

[0040] Step 3: reacting the matrix substance with the mixed solution of step 1;

[0041] Step 4: post-processing to obtain the final product.

[0042] Step 1, mixing a terbium-containing compound with an organic acid;

[0043] In step 1, the terbium-containing compound is an inorganic salt of terbium, such as terbium nitrate, terbium chloride, preferably terbium chloride;

[0044] The organic acid is that the organic acid is o-chlorobenzoic acid, phthalic acid, salicylic acid, preferably phthalic acid;

[0045] A solvent is also added during the mixing, and the solvent is one or mor...

Embodiment 1

[0098] Use an analytical balance to quickly weigh 1 mmol (0.3734 g) of terbium chloride and 3 mmol (0.4984 g) of phthalic acid that have been prepared, and pour them into a 250 mL three-hole round-bottomed flask equipped with a spherical reflux condenser. Stopper the remaining two holes, measure 10mL of absolute ethanol with a graduated cylinder, pour it into a three-hole round bottom flask, stir on a magnetic stirrer, and oscillate ultrasonically for 10 minutes;

[0099] Weigh 1.0000g of anhydrous calcium carbonate CaCO with an analytical balance 3 In a 50mL beaker, add 20mL of absolute ethanol, put it into an ultrasonic cleaner, and ultrasonically oscillate for 30min under the condition of constant stirring with a glass rod;

[0100] Ultrasonic shaken CaCO 3 The solution was quickly poured into the above-mentioned three-hole round-bottomed flask, and allowed to heat, stir and reflux together with terbium chloride and phthalic acid solution for 2.0 h;

[0101] Stop heating,...

Embodiment 2～8

[0103] The difference between embodiment 2~8 and embodiment 1 is that used calcium carbonate CaCO 3The quality is different, and the quality of calcium carbonate used in embodiments 2~8 is respectively 2.0g, 3.0g, 4.0g, 5.0g, 6.0g, 7.0g, 8.0g.

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Abstract

The invention provides a terbium coordination compound composite fluorescent material taking an inorganic salt as a matrix, and a preparation method thereof. The preparation method comprises the following steps: carrying out a reaction on terbium chloride, phthalic acid and calcium carbonate to prepare a terbium coordination compound composite fluorescent material taking calcium carbonate as a matrix; and characterizing the performances of the prepared composite fluorescent material through analysis experiments such as ultraviolet analysis, infrared analysis, fluorescence analysis, thermogravimetric difference thermal analysis, XRD and the like. According to the terbium coordination compound composite fluorescent material with the inorganic salt as the matrix, the use amount of rare earthions is reduced, the cost of the rare earth coordination compound fluorescent material is reduced, and the prepared composite fluorescent material is environmentally friendly, good in thermal stability and long in fluorescent service life. The preparation method is simple, and the composite fluorescent material can be well separated from the solution.

Description

technical field [0001] The invention relates to the field of fluorescent materials, in particular to a terbium complex composite fluorescent material with an inorganic salt as a matrix and a preparation method thereof. Background technique [0002] Rare earth elements (rare earth elements), also known as rare earth metals, are composed of fifteen lanthanide elements (lanthanide elements) in the periodic table of chemical elements and yttrium and scandium elements that coexist in large quantities with lanthanide deposits in nature. Consists of large families of elements. Rare earth elements are vividly compared to "vitamins in industry" because of their wide application in many fields such as metal refining, petrochemical industry, military industry, magnetic materials and fluorescent materials. Rare earth elements get their name because they were first isolated and found in rare earth minerals. The special name "rare earth" originated from the fact that the distribution of...

Claims

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Application Information

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IPC IPC(8): C09K11/02C09K11/06
CPCC09K11/025C09K11/06C09K2211/1007C09K2211/182
Inventor 陶栋梁金凤宋苗苗韦峰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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