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Preparation method and application of carbon nanoparticles

A technology of carbon nano-particles, dehydration and carbonization, applied in nano-carbon, nano-technology, nano-optics, etc., to achieve the effects of low process cost, high-efficiency light-to-heat conversion characteristics, and simple preparation methods

Active Publication Date: 2022-05-10
GUANGDONG QUANTUM MOODY BIOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Ammonia water is a commonly used nitrogen-doped raw material. Carbon nanomaterials prepared using ammonia water as a raw material exhibit strong fluorescence emission in the blue light band. There are few reports

Method used

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  • Preparation method and application of carbon nanoparticles
  • Preparation method and application of carbon nanoparticles
  • Preparation method and application of carbon nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation of embodiment 1 carbon nanoparticle

[0036] Dissolve 1g of citric acid and 2g of ammonium carbonate in 30mL of DMSO solvent to obtain a transparent solution, then place it in a 50mL polytetrafluoroethylene autoclave, react at 160°C for 4 hours, the reaction pressure is 7MPa, and the solution after the reaction is filtered Finally, a powdery solid is obtained, and the powdery solid is washed with water, centrifuged (8000rpm, 5min), dried and other processes to obtain a dark blue powder, that is, to obtain carbon nanoparticles.

[0037] Observe the shape and size of carbon nanoparticles by TEM (transmission electron microscope) and AFM (atomic force microscope), such as Figure 1-Figure 3 As shown, it shows that the size of carbon nanoparticles synthesized in this example is about 2-15nm, and the height is about 1-15nm.

[0038] Observe the elements on the surface of carbon nanoparticles and the composition of surface functional groups by EDS (X-ray ener...

Embodiment 2

[0039] The preparation of embodiment 2 carbon nanoparticles

[0040] Dissolve 1g of ethylenediaminetetraacetic acid and 10g of ammonium acetate in 10mL of DMF solvent to obtain a transparent solution, then place it in a 50mL polytetrafluoroethylene autoclave, react at 220°C for 1 hour, and the reaction pressure is 2MPa. After the solution is filtered, a powdery solid is obtained, and the powdery solid is washed with water, centrifuged (8000rpm, 5min), dried and other processes to obtain a dark blue powder, that is, carbon nanoparticles.

[0041] The morphology and size of the carbon nanoparticles were observed by TEM and AFM, and the result was similar to that of Example 1, and the size of the synthesized carbon nanoparticles was about 2-15nm.

[0042] The elements on the surface of carbon nanoparticles and the composition of surface functional groups were observed by EDS and FTIR. The result was similar to that of Example 1. The surface of the synthesized carbon nanoparticles...

Embodiment 3

[0043] The preparation of embodiment 3 carbon nanoparticles

[0044] Dissolve 2g of glucose and 1g of ammonium chloride in 50mL of THF solvent to obtain a transparent solution, then place it in a 50mL polytetrafluoroethylene autoclave, react at 110°C for 12 hours, and the reaction pressure is 10Mpa, and the reacted solution is filtered Finally, a powdery solid is obtained, and the powdery solid is washed with water, centrifuged (8000rpm, 5min), dried and other processes to obtain a dark blue powder, that is, to obtain carbon nanoparticles.

[0045] The morphology and size of the carbon nanoparticles were observed by TEM and AFM, and the result was similar to that of Example 1, and the size of the synthesized carbon nanoparticles was about 2-15nm.

[0046] Observe the elements on the surface of carbon nanoparticles and the composition of surface functional groups by EDS and FTIR. The result is similar to Example 1. The surface of the synthesized carbon nanoparticles is rich in a ...

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Abstract

The invention belongs to the technical field of carbon nano materials, particularly relates to a preparation method and application of carbon nano particles, and aims to develop a near-infrared carbon nano material which is simple in preparation method and can be produced in a quantitative manner. The carbon nanoparticles are prepared by dehydrating and carbonizing ammonia water or / and ammonium salt and a polycarboxyl / polyhydroxy compound in a polar aprotic solvent, and the carbon nanoparticles have the characteristics of near-red light band absorption and near-infrared band emission, and also have an efficient photothermal conversion characteristic; the carbon nano particles (including granular or coiled nano particles) have good biological safety and can be applied to the technical fields of biological fluorescence imaging, tumor photo-thermal therapy, drug carriers, anti-counterfeiting ink and the like; meanwhile, the preparation method is simple, the process cost is low, and large-scale batch preparation of the carbon nanoparticles is facilitated.

Description

technical field [0001] The invention belongs to the technical field of carbon nanomaterials, and in particular relates to a preparation method and application of carbon nanoparticle. Background technique [0002] With the emergence and development of nanotechnology, the family of carbon materials continues to grow. As a new member of the carbon material family, carbon nanoparticles are a unique luminescent nanomaterial because of their small particle size (less than 10nm), low toxicity, good water solubility, excellent fluorescence performance and strong photostability. advantages have attracted the attention of researchers. Carbon Nanoparticles (CNPs) have been favored by scientific researchers since they were first discovered in 2004. Compared with traditional quantum dots (QDs) and fluorescent small molecules, they have shown some unique advantages: (1) Comparing with QDs Compared with CNPs, CNPs have better biocompatibility and environmental friendliness; (2) Compared ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/15B82Y20/00B82Y40/00C09K11/65A61K49/00A61K41/00A61K47/04A61P35/00
CPCC01B32/15B82Y20/00B82Y40/00C09K11/65A61K49/0065A61K41/0052A61K47/02A61P35/00A61K41/00A61K49/00C01B32/00
Inventor 王先玉
Owner GUANGDONG QUANTUM MOODY BIOTECHNOLOGY CO LTD