Preparation method of environment-friendly low-toxic fluorescent carbon nano particle liquor

A technology of carbon nanoparticles and low toxicity, applied in the direction of nanocarbon, nanotechnology, nanotechnology, etc., can solve the problems of low fluorescence of carbon nanoparticle solutions, increase synthesis steps and time, and be unfavorable for mass production. Low, sufficient supply of raw materials, low toxicity effect

Inactive Publication Date: 2013-12-25
SHENYANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrochemical synthesis method has a great influence on the fluorescence of nanoparticles due to the properties of the electrolyte, and the fluorescence of the obtained carbon nanoparticle solution is usually not high, which requires passivation modification, which increases the synthesis steps and time
The hot reflux method uses strong oxidizing acid to oxidize to prepare nano-carbon dots. Using a large amount of strong acid will easily pollute the environment and is not conducive to mass production.

Method used

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  • Preparation method of environment-friendly low-toxic fluorescent carbon nano particle liquor
  • Preparation method of environment-friendly low-toxic fluorescent carbon nano particle liquor
  • Preparation method of environment-friendly low-toxic fluorescent carbon nano particle liquor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1 Use a balance to weigh 1.0g of citric acid and 0.2g of glycine, put it into a mortar, mix and grind until fine;

[0021] 2. Put the ground citric acid and glycine into a 50ml beaker, add 20ml of ethylene glycol, stir on a magnetic stirrer, heat at 60°C to dissolve the citric acid and glycine, and obtain a colorless and transparent solution;

[0022] 3. Transfer the above colorless and transparent solution to the reaction kettle. The inner sleeve of the reaction kettle is made of polytetrafluoroethylene material, and the outer jacket is made of stainless steel material. Put the reaction kettle into a constant temperature drying oven for heating. The heating temperature is 160°C and the heating time is After 3 hours, the reactor was taken out from the constant temperature drying oven and cooled to room temperature naturally to obtain a brown-yellow fluorescent carbon nanoparticle solution.

[0023] Fluorescent characterization of Example 1 was carried out. It can be see...

Embodiment 2

[0026] 1. Weigh 1.0g of citric acid and 0.2g of cystine with a balance, put it into a mortar, mix and grind until fine;

[0027] 2. Put the ground citric acid and cystine into a 50ml beaker, add 20ml of ethylene glycol, stir on a magnetic stirrer, and heat at 60°C to dissolve the citric acid and glycine;

[0028] 3. Transfer the above colorless and transparent solution to the reaction kettle. The inner sleeve of the reaction kettle is made of polytetrafluoroethylene material, and the outer jacket is made of stainless steel material. Put the reaction kettle into a constant temperature drying oven for heating. The heating temperature is 170°C and the heating time is After 3 hours, the reactor was taken out from the constant temperature drying oven and cooled to room temperature naturally to obtain a brown-yellow fluorescent carbon nanoparticle solution.

[0029] Example 2 was characterized by fluorescence. It can be seen from the fluorescence spectrum that the best excitation pe...

Embodiment 3

[0031] 1. Weigh 1.0g of citric acid and 0.2g of glutamic acid with a balance, put it into a mortar, mix and grind until fine;

[0032] 2. Put the ground citric acid and glutamic acid into a 50ml beaker, add 20ml of ethylene glycol, stir on a magnetic stirrer, and heat at 60°C to dissolve the citric acid and glutamic acid;

[0033] 3. Transfer the above colorless and transparent solution to the reaction kettle. The inner sleeve of the reaction kettle is made of polytetrafluoroethylene material, and the outer jacket is made of stainless steel material. Put the reaction kettle into a constant temperature drying oven for heating. The heating temperature is 180°C, and the heating time is After 3 hours, the reactor was taken out from the constant temperature drying oven and cooled to room temperature naturally to obtain a brown-yellow fluorescent carbon nanoparticle solution.

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Abstract

The invention discloses a preparation method of environment-friendly low-toxic fluorescent carbon nano particle liquor, and relates to a preparation method of fluorescent particle liquor. The method comprises the following steps: weighing 1.0g of citric acid by a scale; placing 2.0g of amino acid in a mortar and uniformly grinding and porphyrizing; placing grinded citric acid and amino acid in a 50ml beaker; adding 20ml of ethylene glycol and stirring on a magnetic stirring apparatus; heating at 60 DEG C to dissolve the citric acid and amino acid so as to obtain colorless and transparent liquor; transferring the colorless and transparent liquor to a reaction kettle which is internally sleeved with a polytetrafluoroethylene material and externally sleeved with a stainless steel material; placing the reaction kettle into a constant temperature drying box to heat at 150-180 DEG C for 3 hours; and then, taking out the reaction kettle from the constant temperature drying box to naturally cool to room temperature so as to obtain the brown fluorescent carbon nano particle liquor.

Description

technical field [0001] The invention relates to a method for preparing a fluorescent particle solution, in particular to a method for preparing an environment-friendly and low-toxicity fluorescent carbon nanoparticle solution. Background technique [0002] The development of nano-quantum dot materials was originally metal nano-materials. Due to the toxicity of metal nano-materials, nano-fluorescent carbon nano-materials have been developed in recent years. Carbon nanomaterials are a new type of fluorescent nanoparticles, which have similar fluorescent properties to quantum dots, such as strong and stable fluorescence, adjustable excitation and emission wavelengths, and excellent fluorescence emission in the visible region. Compared with other fluorescent nanoparticles, fluorescent carbon nanoparticles have the advantages of good water solubility, biocompatibility and easy surface functionalization due to the abundant oxygen element on their surface. Fluorescent carbon nano...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02C09K11/65B82Y30/00C01B32/15
Inventor 李永波李洪仁李锋刘军赵军
Owner SHENYANG UNIV
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