Preparation method of water-soluble fluorescent carbon quantum dots based on eggshell membrane

A technology of carbon quantum dots and eggshell membranes, which is applied in the field of preparation of water-soluble fluorescent carbon quantum dots, can solve the problems of random discharge, environmental pollution, resource waste, etc., and achieve the effect of simple equipment, good water solubility and low cost

Pending Publication Date: 2021-11-26
江西八六三实业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for preparing water-soluble fluorescent carbon quantum dots based on eggshell membranes, which solves the problem that eggshell membranes are often discharged randomly as daily life and industrial and agricultural wastes, causing huge environmental pollution and resource pollution. Waste, the preparation and application of eggshell membrane-based fluorescent carbon quantum dots by hydrothermal method are of great significance to broaden the source of carbon dot raw materials, provide a convenient preparation method for carbon dots, and realize the problem of turning waste into treasure

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  • Preparation method of water-soluble fluorescent carbon quantum dots based on eggshell membrane
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  • Preparation method of water-soluble fluorescent carbon quantum dots based on eggshell membrane

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Embodiment 1

[0036] like Figure 1-5 As shown, the embodiment of the present invention provides a method for preparing water-soluble fluorescent carbon quantum dots based on eggshell membranes. In this method, the hydroxyl radicals generated by the photolysis of hydrogen peroxide are used to photoconvert the eggshell membranes, and the photoproducts produced include carbon quantum dots. and carbon dioxide, comprising the following steps:

[0037] S1. Carbon source preparation

[0038] Peel off the eggshell membrane from the inner wall of the collected discarded eggshell, then wash it repeatedly with distilled water for 3 times, then place it in an oven for drying, and crush it after drying to obtain eggshell membrane fragments with a particle size of 50 mesh;

[0039] S2. Carbon material solution preparation

[0040] adding the eggshell membrane fragments prepared in step S1 into the sodium hydroxide solution, and fully stirring to disperse the eggshell membrane fragments in the sodium h...

Embodiment 2

[0046] like Figure 1-5 As shown, the embodiment of the present invention provides a method for preparing water-soluble fluorescent carbon quantum dots based on eggshell membranes. In this method, the hydroxyl radicals generated by the photolysis of hydrogen peroxide are used to photoconvert the eggshell membranes, and the photoproducts produced include carbon quantum dots. and carbon dioxide, comprising the following steps:

[0047] S1. Carbon source preparation

[0048] Peel off the eggshell membrane from the inner wall of the collected discarded eggshell, then wash it repeatedly with distilled water for 3 times, then place it in an oven for drying, and crush it after drying to obtain eggshell membrane fragments with a particle size of 80 mesh;

[0049] S2. Carbon material solution preparation

[0050] adding the eggshell membrane fragments prepared in step S1 into the sodium hydroxide solution, and fully stirring to disperse the eggshell membrane fragments in the sodium h...

Embodiment 3

[0056] like Figure 1-5 As shown, the embodiment of the present invention provides a method for preparing water-soluble fluorescent carbon quantum dots based on eggshell membranes. In this method, the hydroxyl radicals generated by the photolysis of hydrogen peroxide are used to photoconvert the eggshell membranes, and the photoproducts produced include carbon quantum dots. and carbon dioxide, comprising the following steps:

[0057] S1. Carbon source preparation

[0058] Peel off the eggshell membrane from the inner wall of the collected discarded eggshell, then wash it repeatedly with distilled water for 3 times, then place it in an oven for drying, and crush it after drying to obtain eggshell membrane fragments with a particle size of 100 mesh;

[0059] S2. Carbon material solution preparation

[0060] adding the eggshell membrane fragments prepared in step S1 into the sodium hydroxide solution, and fully stirring to disperse the eggshell membrane fragments in the sodium ...

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Abstract

The invention provides a preparation method of water-soluble fluorescent carbon quantum dots based on eggshell membranes, and relates to the field of preparation and application of fluorescent carbon quantum dots. The preparation method of the water-soluble fluorescent carbon quantum dots based on the eggshell membrane comprises the following steps: S1, preparing a carbon source: stripping the eggshell membrane from the inner wall of a collected waste eggshell, then repeatedly washing the product with distilled water for 3 times, and then drying the product in a drying oven; and S2, crushing the dried material to obtain eggshell membrane fragments with the granularity of 20-120 meshes. According to the preparation method of the water-soluble fluorescent carbon quantum dots based on the eggshell membrane, the fluorescent carbon quantum dots prepared by the method have the advantages of excellent optical property, good water solubility, low toxicity, environmental friendliness, wide raw material source, low cost, good biocompatibility and the like; therefore, good application prospects are realized in the fields of medical imaging equipment, tiny light-emitting diodes, chemical sensors, photocatalytic reaction and the like.

Description

technical field [0001] The invention relates to the preparation and application fields of fluorescent carbon quantum dots, in particular to a preparation method of water-soluble fluorescent carbon quantum dots based on eggshell membranes. Background technique [0002] Carbon quantum dots (Carbon Quantum Dots, CQD) are composed of dispersed spherical carbon particles, with extremely small size (below 10nm), and a new type of nano-carbon material with fluorescent properties. Traditional quantum dots are generally made from lead, cadmium and silicon However, these quantum dots are generally toxic and have great harm to the environment. As a new type of carbon nanomaterial, carbon quantum dots are similar to various metal quantum dots, and no heavy metals are involved in the preparation process. The use of carbon quantum dots can be extracted from biomass materials, such as egg whites, wax gourds, etc. The chemical inertness of carbon materials is high, stable in nature, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/65B82Y20/00B82Y40/00C01B32/15G01N21/64A61B5/1172
CPCC09K11/65B82Y20/00B82Y40/00C01B32/15G01N21/643G01N21/6486A61B5/1172
Inventor 陈彦霖凌宇鑫
Owner 江西八六三实业有限公司
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