Preparation method of carbon quantum dots with high quantum yield

A carbon quantum dot, high-quantum technology, applied in the field of new functional materials, can solve the problems of long time consumption, complicated preparation method, high production cost, etc., and achieve the effect of reducing production cost, simple preparation method and short preparation time
CN110877904AActive Publication Date: 2020-03-13SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
Publication Date
2020-03-13

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Abstract

The invention discloses a preparation method of carbon quantum dots with high quantum yield. The preparation method comprises the following steps: firstly, mixing a carbon source composed of citric acid and ascorbic acid, and an alkali source composed of ethylenediamine and o-phenylenediamine, adding an obtained mixture into a solvent to obtain a mixed solution, and then performing microwave heating on the mixed solution for preset time to obtain the carbon quantum dots. The preparation method of the carbon quantum dot with high quantum yield can solve the technical problems of complex preparation method, long time consumption, high preparation cost and the like in the existing carbon quantum dot preparation process.
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Description

technical field

[0001] The invention relates to the technical field of novel functional materials, in particular to a method for preparing carbon quantum dots with high quantum yield. Background technique

[0002] Fluorescent nanoparticles are a kind of fluorescent material with nanoscale size, because nanomaterials have high specific heat capacity, high expansion coefficient, high reactivity, high toughness, high wave absorption and other properties that macroscopic materials do not have, so they become environmental science. , material science and biology and other subject hotspots. With the research on fluorescent nanoparticles in recent years, more and more fluorescent nanomaterials have poured into people's sight, and carbon quantum dots (abbreviated as carbon dots) are undoubtedly the most eye-catching, because it solves the problem of early semiconductor Quantum dots contain Cd 2+ , Pd 2+ The problem of heavy metals harmful to organisms and the environment has also...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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