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Method for preparing near-infrared carbon quantum dots by using fuchsin as carbon source

A technology of carbon quantum dots and infrared carbon, which is applied in the field of preparing near-infrared carbon quantum dots, can solve the problems of waste of resources, environment, pollution, etc., and achieve the effects of protecting the environment, reducing pollution, and stabilizing properties

Inactive Publication Date: 2015-04-08
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In today's industrial production, diosgenin is mainly extracted from turmeric as a raw material for steroid hormone drugs. The residue after extraction also contains a large amount of starch and cellulose that have not been utilized, which not only wastes valuable resources but also pollutes the environment.

Method used

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  • Method for preparing near-infrared carbon quantum dots by using fuchsin as carbon source
  • Method for preparing near-infrared carbon quantum dots by using fuchsin as carbon source
  • Method for preparing near-infrared carbon quantum dots by using fuchsin as carbon source

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Experimental program
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Effect test

Embodiment 1

[0017] a. Weigh 1.00 g of the turmeric extract residue after constant drying in a drying oven at 105°C for 2 hours and put it into a 50mL hydrothermal reaction kettle, add 40mL of secondary water, place it in a drying oven, and adjust the reaction temperature to 200°C. The reaction time is 2 hours. After the reaction, take out the reaction kettle, place it on a porcelain plate, let it cool down to room temperature naturally, then open the reaction kettle, filter the product in the kettle, and obtain a carbon quantum dot stock solution with a fluorescence emission peak at 520nm ;

[0018] b. Weigh 0.01507g fuchsin and dissolve it in a 50mL volumetric flask to obtain a concentration of 1.0×10 -3 The magenta solution of mol / L is used as stock solution;

[0019] c. Add 1mL of the magenta solution prepared in step (2) and the carbon quantum dot solution prepared in 1mL of step (1) into a 50mL reactor, add 38mL of secondary water, place in a drying oven, adjust the reaction tempera...

Embodiment 2

[0022] a. Weigh 1.00g of turmeric extract residue after constant drying in a 105°C drying oven for 2h, place it in a 50mL hydrothermal reaction kettle, add 40mL of secondary water, place it in a drying oven, and adjust the reaction temperature to 200°C , the reaction time is 2 hours. After the reaction, take out the reaction kettle, place it on a porcelain plate, let it cool down to room temperature naturally, then open the reaction kettle, filter the product in the kettle, and obtain a carbon quantum dot reserve with a fluorescence emission peak at 520nm liquid;

[0023] b. Weigh 0.01507g fuchsin and dissolve it in a 50mL volumetric flask to obtain a concentration of 1.0×10 -3 The magenta solution of mol / L is used as stock solution;

[0024] c. Add 1mL of magenta solution prepared in step (2) and carbon quantum dot solution prepared in 2mL of step (1) into a 50mL reactor, add 37mL of secondary water, place in a drying oven, adjust the reaction temperature to 220°C, React fo...

Embodiment 3

[0027] a. Weigh 1.00g of turmeric extract residue after constant drying in a 105°C drying oven for 2h, place it in a 50mL hydrothermal reaction kettle, add 40mL of secondary water, place it in a drying oven, and adjust the reaction temperature to 200°C , the reaction time is 2 hours. After the reaction, take out the reaction kettle, place it on a porcelain plate, let it cool down to room temperature naturally, then open the reaction kettle, filter the product in the kettle, and obtain a carbon quantum dot reserve with a fluorescence emission peak at 520nm liquid;

[0028] b. Weigh 0.01507g fuchsin and dissolve it in a 50mL volumetric flask to obtain a concentration of 1.0×10 -3 The magenta solution of mol / L is used as stock solution;

[0029] c. Add 1mL of fuchsin solution and 3mL of carbon quantum dot solution into a 50mL reactor, add 36mL of secondary water, place in a dry box, adjust the reaction temperature to 220°C, and react for 4 hours. After the reaction, take out the...

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Abstract

The invention discloses a method for preparing near-infrared carbon quantum dots by using fuchsin as a carbon source. The method comprises the following steps: weighing 1.0000g of yellow ginger extraction residues, putting into a 50mL hydrothermal reaction kettle, adding 40mL of secondary water, putting in a drying box, reacting at 200 DEG C for 2 hours, after the reaction finishes, cooling to room temperature, and filtering to obtain the carbon quantum dot solution; dissolving 0.01507g of fuchsin, and adding the solvent to a constant volume in a 50mL volumetric flask to obtain a 1.0*10<-3> mol / L fuchsin solution; adding the fuchsin solution and carbon quantum dot solution into a 50mL reaction kettle, uniformly mixing, adding secondary water until the total reaction volume is 40mL, putting in a drying box, and reacting at 220 DEG C for 4 hours; and after the reaction finishes, cooling to room temperature, and filtering to obtain the near-infrared carbon quantum dots. The near-infrared carbon quantum dots prepared by the method have the advantages of stable properties and high fluorescence intensity, and have application prospects in the fields of biological imaging, sensing, drug transfer, photocatalysis, biological living imaging and the like.

Description

technical field [0001] The invention belongs to the technical field of near-infrared nanometer material preparation, and in particular relates to a method for preparing near-infrared carbon quantum dots using magenta as a carbon source. Background technique [0002] Compared with traditional organic dyes and semiconductor quantum dots, fluorescent carbon quantum dots (CQDs) not only have the advantages of stable optical properties and easy surface functionalization, but also have good biocompatibility and low cytotoxicity. Therefore, fluorescent carbon quantum dots have broad application prospects, including bioimaging, sensing, drug delivery, photocatalysis, and bioin vivo imaging. At present, researchers have established a variety of methods for preparing fluorescent carbon quantum dots, (typical literature reports: Bourlinos A B, Stassinopoulos A, Anglos D, et al. Surface functionalized carbogenic quantum dots.Small, 2008, 4 (4): 455- 458.; Xu X Y, Ray R, Gu Y L, et al. ...

Claims

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Application Information

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IPC IPC(8): C01B31/02C09K11/65
Inventor 曾云龙王天伦元晓云易守军黄昊文关婷婷邓彤彤魏莉莎唐春然
Owner HUNAN UNIV OF SCI & TECH
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