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Preparation method of carbon-coated photothermal conversion nano material

A technology of light-to-heat conversion and nanomaterials, applied in the direction of carbon preparation/purification, nanotechnology, nanotechnology, etc., can solve the problems of complex preparation process, high toxicity, and limitation of biological applications, and achieve simple preparation process, prevention of agglomeration, Effect of high near-infrared light absorption performance

Inactive Publication Date: 2014-05-21
SHANGHAI MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to reports, CuS nanoparticles prepared by ligand exchange (ACS Nano (Nano), 2011, 5, 9761-9771) effectively solved the problem of its biocompatibility, but the toxicity and complicated preparation process limited its biological application

Method used

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  • Preparation method of carbon-coated photothermal conversion nano material
  • Preparation method of carbon-coated photothermal conversion nano material
  • Preparation method of carbon-coated photothermal conversion nano material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add CuCl to the beaker 2 2H 2 O (0.17g, 1mmol), and dissolved in 1000ml distilled water, stirred continuously to obtain a light blue solution. Then DMSA (0.9 g, 5mmol), NaOH (0.4 g, 10mmol), Na 2 S·9H 2 Add O (0.24g, 1mmol) into 10ml of distilled water one by one, stir evenly, pour the mixture into the above light blue solution, and stir at room temperature for 5 minutes, then raise the temperature to 85°C, stir magnetically for 25 minutes to obtain dark green The product was centrifuged several times with distilled water and methanol solution to obtain DMSA-coated CuS nanoparticles. Add the above particles into 35ml of sodium sulfide solution with pH = 12, after ultrasonic dispersion, pour into a 50ml hydrothermal reaction kettle, react at 210°C for 6 hours at high temperature, finally centrifuge several times with distilled water and methanol solution, and dry naturally Finally, carbon-coated CuS nanoparticles were obtained.

[0019] The high-resolution transmiss...

Embodiment 2

[0024] Add CuCl to the beaker 2 2H 2 O (0.25g, 1.5mmol), and dissolved in 1000ml distilled water, stirred continuously to obtain a light blue solution. Then DMSA (1.25g, 7mmol), NaOH (0.4 g, 10mmol), Na 2 S·9H 2 O (0.36g, 1.5mmol) was added into 10ml of distilled water successively, and after stirring evenly, the mixed solution was poured into the above light blue solution, and after stirring at room temperature for 5 minutes, the temperature was raised to 90°C, and magnetic stirring was carried out for 20 minutes to obtain deep The green product was centrifuged several times with distilled water and methanol solution to obtain DMSA-coated CuS nanoparticles. Add the above particles into 35ml of sodium sulfide solution with pH = 11, after ultrasonic dispersion, pour into a 50ml hydrothermal reaction kettle, react at 210°C for 5 hours at high temperature, finally centrifuge several times with distilled water and methanol solution, and dry naturally Finally, carbon-coated CuS...

Embodiment 3

[0026] Add CuCl to the beaker 2 2H 2 O (0.08g, 0.5mmol), and dissolved in 500ml distilled water, stirred continuously to obtain a light blue solution. Then DMSA (0.45g, 2.5mmol), NaOH (0.2g, 5mmol), Na 2 S·9H 2 O (0.12g, 0.5mmol) was added into 5ml of distilled water successively, after stirring evenly, the mixed solution was poured into the above light blue solution, and after stirring at room temperature for 5 minutes, the temperature was raised to 85°C, and magnetic stirring was carried out for 20 minutes to obtain deep The green product was centrifuged several times with distilled water and methanol solution to obtain DMSA-coated CuS nanoparticles. Add the above particles into 35ml of sodium sulfide solution with pH=12.5, after ultrasonic dispersion, pour into a 50ml hydrothermal reaction kettle, react at 210°C for 5 hours at high temperature, finally centrifuge several times with distilled water and methanol solution, and dry naturally Finally, carbon-coated CuS nanop...

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Abstract

The invention discloses a preparation method of a carbon-coated photothermal conversion nano material. The preparation method comprises the following steps: 1, adding a surfactant and a distilled water solution of Na2S.9H2O in a distilled water solution of CuCl2.2H2O, heating to 80-90 DEG C after stirring at a room temperature for 5 minutes, obtaining a product after stirring for 20-30 minutes, then centrifugally separating and washing for multiple times by using the distilled water and a methanol solution, and naturally drying, thereby obtaining organic matter ligand coated CuS nano particles; 2, diluting the organic matter ligand coated CuS nano particles by adopting a distilled water solution, after ultrasonically dispersing, pouring in a hydrothermal reaction kettle, reacting at a high temperature of 195-215 DEG C for 4-6 hours, centrifugally separating and washing for multiple times by using the distilled water and the methanol solution, and naturally drying, thereby obtaining the carbon coated CuS nano particles. According to a carbon coated layer prepared by adopting the preparation method, the biotoxicity of the CuS is effectively reduced, the biocompatibility and the photothermal conversion efficiency are increased, the nano particles can be prevented from aggregating and being oxidized, the stability is improved, the preparation process is simple, and the carbon-coated photothermal conversion nano material can be used for photothermal therapy.

Description

technical field [0001] The invention belongs to the technical field of preparation of light-to-heat conversion nanomaterials, and relates to a light-to-heat conversion nanocomposite material, in particular, to a carbon-coated light-to-heat conversion nanomaterial with near-infrared light absorption function and light-to-heat conversion performance Preparation. Background technique [0002] Photothermal conversion nanomaterials are a new type of functional material that can absorb near-infrared light and generate heat through plasmon resonance or energy band transition. As a new research hotspot, scholars at home and abroad are devoted to the synthesis of this material, which has a wide range of uses in biomedicine, such as drug sustained release, photothermal therapy, and medical imaging, etc. Research in related fields has also made great progress , For example, the research group of Professor Zheng Nanfeng of Xiamen University has prepared a new type of blue nano-palladiu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/12C01B31/02B82Y30/00C01B32/05
Inventor 张英杰李晓峰安燕陶富军董丽华尹衍升
Owner SHANGHAI MARITIME UNIVERSITY
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