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Ultra-small-size copper sulfide nano-particles as well as preparation method and application thereof

A nanoparticle, copper sulfide technology, applied in the field of materials, can solve the problems of complex and tedious synthesis process and modification methods, poor water solubility, etc., and achieve excellent photothermal conversion effect, less toxic and side effects, and less equipment requirements.

Active Publication Date: 2022-04-29
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the biggest obstacle in the application of copper sulfide nanoparticles is its poor water solubility. In order to ensure its water solubility, complex and tedious synthesis processes and modification methods are usually required.

Method used

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  • Ultra-small-size copper sulfide nano-particles as well as preparation method and application thereof
  • Ultra-small-size copper sulfide nano-particles as well as preparation method and application thereof
  • Ultra-small-size copper sulfide nano-particles as well as preparation method and application thereof

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preparation example Construction

[0028] In one embodiment of the present invention, a method for preparing water-soluble and stable ultra-small copper sulfide nanoparticles is provided, which includes the following steps.

[0029] (1) After stirring and dissolving ethylenediaminetetraacetic acid and copper acetate evenly, utilize hydrothermal reaction to obtain carbon quantum dots doped with copper ions;

[0030] (2) Take the carbon quantum dot solution doped with copper ions, heat it in a water bath, add sodium sulfide solution under stirring conditions, and stabilize the water bath for a period of time to obtain water-soluble ultra-small copper sulfide nanoparticles.

[0031] (3) Add water-soluble ultra-small copper sulfide nanoparticles into the mercapto-polyethylene glycol aqueous solution under stirring conditions, centrifuge after a period of time, collect the precipitate and re-dissolve it in water to obtain purified water-soluble and stable ultra-small Size copper sulfide nanoparticles.

[0032] In o...

Embodiment 1

[0046] A method for preparing water-soluble and stable ultra-small copper sulfide nanoparticles, comprising the steps of:

[0047] (1) Weigh 0.372g of ethylenediaminetetraacetic acid dihydrate and 0.199g of copper acetate monohydrate, dissolve them in 25mL of pure water, stir until they are completely dissolved, add them to the reaction kettle, completely seal and check the airtightness. Hydrothermal reaction at 180°C for 8h. After the temperature of the reactor was completely lowered to room temperature, the obtained copper ion-doped carbon quantum dots were freeze-dried and quantified.

[0048] (2) Take 5 mL of copper ion-doped carbon quantum dots (2 mg / mL), preheat to 60 ° C in a water bath environment; add 1 mL of sodium sulfide aqueous solution (0.01 M) under stirring at 800 rpm, stabilize for 2 minutes, and then add dropwise to 10 mL of mercapto -Polyethylene glycol aqueous solution (0.5mg / mL) was stable for 2h to obtain water-soluble and stable ultra-small copper sulfi...

Embodiment 2

[0050] A method for preparing water-soluble and stable ultra-small copper sulfide nanoparticles, comprising the steps of:

[0051](1) Weigh 0.372g of ethylenediaminetetraacetic acid dihydrate and 0.199g of copper acetate monohydrate, dissolve them in 25mL of pure water, stir until they are completely dissolved, add them to the reaction kettle, completely seal and check the airtightness. Hydrothermal reaction at 180°C for 10h. After the temperature of the reactor was completely lowered to room temperature, the obtained copper ion-doped carbon quantum dots were freeze-dried and quantified.

[0052] (2) Take 5mL of copper ion-doped carbon quantum dots (2mg / mL), preheat to 65°C in a water bath environment; add 1mL of sodium sulfide aqueous solution (0.01M) under stirring at 800rpm, and add dropwise to 10mL of mercapto -Polyethylene glycol aqueous solution (0.5mg / mL) was stabilized for 1h to obtain water-soluble and stable ultra-small copper sulfide nanoparticles; it was centrifug...

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Abstract

The invention relates to ultra-small-size copper sulfide nano-particles as well as a preparation method and application of the ultra-small-size copper sulfide nano-particles. The copper sulfide nanoparticles are synthesized by adopting the copper ion-doped carbon quantum dots, and the synthesized copper ion-doped carbon quantum dots have more excellent photoresponse and electron transmission effects. The prepared ultra-small-size copper sulphide nano-particles overcome the obstruction of extremely poor water solubility in application of copper sulphide nano-materials, and can show good solubility and long-term stability when water is used as a solvent. The water-soluble stable ultra-small-size copper sulphide nanoparticles prepared by the preparation method disclosed by the invention show an excellent photothermal conversion effect under the irradiation of near-infrared laser, the preparation process is simple and rapid, and the requirements on instruments and equipment are relatively low.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to an ultra-small size copper sulfide nanoparticle and a preparation method and application thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Copper sulfide nanoparticles can achieve high photothermal conversion efficiency under near-infrared light excitation, so they can be used as excellent photothermal conversion agents for photothermal antibacterial and photothermal therapy. However, the biggest obstacle in the application of copper sulfide nanoparticles is their poor water solubility. In order to ensure their water solubility, complex and tedious synthes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K41/00A61P35/00A61P31/04
CPCA61K41/0052A61P35/00A61P31/04
Inventor 蒋妍彦高福成李灿李辉王凤龙
Owner SHANDONG UNIV
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