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Preparation method of carbon quantum dot fluorescent material

A technology of fluorescent materials and carbon quantum dots, applied in the direction of luminescent materials, chemical instruments and methods, nano-carbon, etc., can solve problems such as complicated procedures, discharge of polluted waste materials, and high cost

Inactive Publication Date: 2013-10-02
SHANGHAI KERUN PHOSPHOR TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shortcomings of their preparation methods are high cost, complicated procedures, discharge of polluting waste materials, and difficulty in large-scale production

Method used

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preparation example Construction

[0012] A method for preparing a carbon quantum dot fluorescent material, comprising: ignitable plant leaf material and a combustion aid, a solid fiber adsorption material layer, and a combustion furnace body; it is characterized in that: the combustion furnace body is composed of an air intake hole, a combustion chamber , Exhaust gas discharge hole, the solid fiber adsorption material layer is placed at the exhaust gas discharge hole; when the plant leaf material is burned, the carbon quantum dot fluorescent material is produced, which is carried by the gas and adsorbed and filtered in the solid fiber adsorption material layer, and the solid fiber adsorption material is placed When in water or solvent, the carbon quantum dot fluorescent material will separate out by itself.

[0013] The carbon quantum dot preparation method in the present invention belongs to a kind of combustion method, and the combustion temperature is about 500 degrees, of course, it can also be at 300-500 d...

Embodiment

[0023] The fallen leaves in the park are collected, dried and crushed.

[0024] The dried material is put into the combustion chamber in the combustion furnace body, the air enters through the air intake hole, and the exhaust air hole is discharged, and the solid fiber adsorption material layer is placed at the exhaust gas outlet hole to cover; when the plant leaf material is burned, carbon quantum dot fluorescent material is produced , which is adsorbed and filtered in the solid fiber adsorption material layer through gas carrying, and the solid fiber adsorption material layer uses dry acetate fiber.

[0025]After the preparation is completed, when the solid fiber adsorption material is placed in water, the carbon quantum dot fluorescent material is separated and precipitated by itself, and the solution is colorless and transparent, and it emits 500nm blue-green fluorescence under the excitation of 400nm ultraviolet light.

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Abstract

The invention provides a preparation method of a carbon quantum dot fluorescent material. The method involves an ignitable plant leaf material, a combustion supporting substance, a solid fiber adsorption material layer, and a combustion furnace body. The method is characterized in that: the combustion furnace body is composed of an air inlet, a combustion chamber, and an exhaust gas outlet, and the solid fiber adsorption material layer is arranged at the exhaust gas outlet; when the plant leaf material combusts, the carbon quantum dot fluorescent material can be generated, is carried by gas and is adsorbed in the solid fiber adsorption material layer, when the solid fiber adsorption material is placed in water or a solvent, the carbon quantum dot fluorescent material can separate and precipitate out by itself. The method provided in the invention can directly use urban waste fallen leaves to prepare the carbon quantum dot fluorescent material and does not employ any chemical means to extract. The carbon quantum dot fluorescent material adsorbed in the solid fiber adsorption material layer is convenient for transportation and carrying, is pollution-free and nonhazardous, can be released by an aqueous solvent or static electricity, so that the carbon quantum dot fluorescent material can be taken out directly.

Description

technical field [0001] The invention belongs to the technical field of nano-luminescent material preparation. Background technique [0002] Carbon quantum dot materials, also known as nano-carbon dot materials, have attracted much attention since their fluorescent properties were discovered. Because of their simple acquisition, low material cost, non-toxic, harmless, and non-polluting, people hope that they can be used in optoelectronic devices, Widely used in coatings, biology and other fields. The main methods for the preparation of existing carbon quantum dot fluorescent materials mainly include laser preparation, chemical preparation, combustion preparation, microwave preparation, etc., which are described in detail in Chinese patents: 201010502346.3, 201210264411.2, 201310052789.0, 201010604139.9, 201110049051.X, 201210013473.6, etc. Various preparation methods and procedures. The disadvantages of their preparation methods are high cost, complicated procedures, discha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02C09K11/65B82Y20/00C01B32/15
Inventor 郑岩刘星元曲松楠边静宇费运启耿树范
Owner SHANGHAI KERUN PHOSPHOR TECH
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