Fluorescent substance based on amino acid deep eutectic solvent and preparation method of fluorescent substance

A technology of deep eutectic solvents and fluorescent substances, applied in the field of fluorescent substances, can solve the problems of insufficient environmental protection of organic solvents, poor stability of fluorescent substances, high energy consumption, etc., and achieve uniform luminescence effect, good thermal stability, and simple process Effect

Active Publication Date: 2019-02-26
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problems of using a large amount of volatile and highly polluting organic solvents in the preparation process of the existing fluorescent powder, which is not environmentally friendly, high in cost, high in energy consumption, and poor in stability of the fluorescent substance, the present invention provides a fluorescent substance based on an amino acid deep eutectic solvent and its preparation method

Method used

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  • Fluorescent substance based on amino acid deep eutectic solvent and preparation method of fluorescent substance
  • Fluorescent substance based on amino acid deep eutectic solvent and preparation method of fluorescent substance
  • Fluorescent substance based on amino acid deep eutectic solvent and preparation method of fluorescent substance

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Embodiment 1

[0026] A fluorescent substance based on an amino acid deep eutectic solvent, comprising the following components: a deep eutectic solvent, europium chloride hexahydrate, the mass ratio of the deep eutectic solvent to europium chloride hexahydrate is 15.3:1, so The deep eutectic solvent is composed of glycerol and L-glutamic acid with a molar ratio of 8:1, and europium chloride hexahydrate is prepared by reacting europium oxide with concentrated hydrochloric acid.

[0027] The above-mentioned preparation method of fluorescent substance based on amino acid deep eutectic solvent comprises the following steps:

[0028] (1) Take glycerol and L-glutamic acid, europium oxide and concentrated hydrochloric acid according to the raw material proportioning;

[0029] (2) Mix 0.16mol (14.81g) glycerol and 0.02mol (2.94g) L-glutamic acid, heat up to 110°C, and react at constant temperature for 20 hours to obtain a deep eutectic solvent;

[0030] (3) Mix europium oxide and concentrated hydr...

Embodiment 2

[0033] A fluorescent substance based on an amino acid deep eutectic solvent, comprising the following components: a deep eutectic solvent, europium chloride hexahydrate, the mass ratio of the deep eutectic solvent to europium chloride hexahydrate is 14:1, so The deep eutectic solvent is composed of glycerol and L-arginine with a molar ratio of 6:1, and europium chloride hexahydrate is prepared by reacting europium oxide with concentrated hydrochloric acid.

[0034] The above-mentioned preparation method of fluorescent substance based on amino acid deep eutectic solvent comprises the following steps:

[0035] (1) Take glycerol and L-arginine, europium oxide and concentrated hydrochloric acid according to the raw material ratio;

[0036] (2) Mix 0.06mol (5.53g) glycerol and 0.01mol (1.74g) L-arginine, heat up to 110°C, and react at constant temperature for 5 hours to obtain a deep eutectic solvent;

[0037] (3) Mix europium oxide and concentrated hydrochloric acid with a mass f...

Embodiment 3

[0040] A fluorescent substance based on an amino acid deep eutectic solvent, comprising the following components: a deep eutectic solvent, europium chloride hexahydrate, the mass ratio of the deep eutectic solvent to europium chloride hexahydrate is 12.8:1, so The deep eutectic solvent is composed of ethylene glycol and L-arginine with a molar ratio of 5:1, and europium chloride hexahydrate is prepared by reacting europium oxide with concentrated hydrochloric acid.

[0041] The above-mentioned preparation method of fluorescent substance based on amino acid deep eutectic solvent comprises the following steps:

[0042] (1) Take ethylene glycol and L-arginine, europium oxide and concentrated hydrochloric acid according to the raw material ratio;

[0043] (2) Mix 0.1mol (6.21g) ethylene glycol and 0.02mol (3.48g) L-arginine, heat up to 90°C, and react at constant temperature for 1 hour to obtain a deep eutectic solvent;

[0044] (3) Mix europium oxide and concentrated hydrochlori...

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Abstract

The invention relates to the technical field of chemical engineering and particularly discloses a fluorescent substance based on an amino acid deep eutectic solvent and a preparation method of the fluorescent substance. The fluorescent substance based on the amino acid deep eutectic solvent comprises the following ingredients: the deep eutectic solvent and rare earth chloride at a mass ratio of (10-20):1, wherein rare earth chloride is at least one of europium chloride, lanthanum chloride, terbium chloride or gadolinium chloride; and the deep eutectic solvent comprises an alcohol compound andamino acid at a mole ratio of (5-10):1. The fluorescent substance based on the amino acid deep eutectic solvent can achieve a uniform luminescence effect, and is good in heat stability, green and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of fluorescent substances, in particular to a fluorescent substance based on an amino acid deep eutectic solvent and a preparation method thereof. Background technique [0002] At present, in the preparation process of fluorescent substances, a large amount of volatile and highly polluting organic solvents are used, which is not friendly to the environment. Traditional fluorescent substances generally use phosphor powder systems. At present, the systems that can be practically applied mainly include: yttrium aluminum garnet oxide, alkaline earth metal silicon (aluminum) salt, nitrogen (nitrogen oxide) compound, sulfur (sulfur oxide) compound, etc., there are Low efficiency, poor thermal stability, and difficulty in achieving uniform particle size of phosphors. In addition, the preparation process of phosphors is generally high temperature, which requires a lot of energy and high cost. Therefore, it is of gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/07C09K11/02
CPCC09K11/02C09K11/07Y02E10/52
Inventor 段二红王雪任红威宫睿全张优关亚楠韩静俞磊
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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