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Antibacterial and antiviral graphene and nano mirror aluminum composite material as well as preparation method and application thereof

A technology of aluminum composite materials and graphene nanosheets, which is applied in the direction of graphene, chemical instruments and methods, alumina/hydroxide preparation, etc., can solve the problems of increasing the complexity of fabric preparation, manufacturing costs, and threats to use safety , to achieve efficient self-heating, not easy to reunite, and improve the effect of penetration depth

Active Publication Date: 2022-02-08
广东极客亮技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned means of using graphene to generate heat to achieve anti-virus all require external power to convert electrical energy into thermal energy to achieve temperature-raising anti-virus
This method increases the complexity and manufacturing cost of fabric preparation, and the safety of use is threatened to a certain extent.

Method used

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  • Antibacterial and antiviral graphene and nano mirror aluminum composite material as well as preparation method and application thereof
  • Antibacterial and antiviral graphene and nano mirror aluminum composite material as well as preparation method and application thereof
  • Antibacterial and antiviral graphene and nano mirror aluminum composite material as well as preparation method and application thereof

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Experimental program
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preparation example Construction

[0030] The invention provides a preparation method of antibacterial and antiviral graphene and nano-mirror aluminum composite material, comprising the following steps:

[0031] S1. Dissolving the organic ligand in an organic solvent, then adding graphene nanosheets, and ultrasonically dispersing evenly to obtain an organic ligand solution.

[0032] The organic ligand is one or more of polycarboxylic acids or imidazoles, preferably polycarboxylic acids, such as terephthalic acid, isophthalic acid, trimesic acid, and 1,4-dinaphthalic acid; The organic solvent is one or more of ethanol, diethylformamide, dimethylformamide, and N-methylpyrrolidone. In this step, the polycarboxylic acid or imidazole organic ligands are adsorbed on the surface of the graphene nanosheets, which is helpful for the exfoliation and dispersion of the graphene nanosheets and is not easy to agglomerate. When it is preferably a polycarboxylic acid, it is helpful for the formation of nano-alumina in the sub...

Embodiment 1

[0045] An antibacterial and antiviral graphene and nano-mirror aluminum composite material, the preparation method comprising the following steps:

[0046] S1. terephthalic acid is dissolved in N-methylpyrrolidone (concentration is 30mmol / mL), then add graphene nanosheets (lateral size is about 300nm, thickness is about 8nm, terephthalic acid and graphene nanosheets The mass ratio is 1:5), and the ultrasonic dispersion is uniform to obtain an organic ligand solution;

[0047] S2. According to the molar ratio of the inorganic aluminum salt and the organic ligand being 1.5:1, add aluminum nitrate to the organic ligand solution obtained in step S1, react in a reactor at 150° C. for 20 h, then centrifuge and wash , dry to obtain Al-MOFs / graphene composite material;

[0048] S3. The Al-MOFs / graphene composite material obtained in step S2 is heated up to 850° C. at a heating rate of 2° C. / min in a mixed gas atmosphere with a volume ratio of 1%:99.9% oxygen and an inert gas, Calcin...

Embodiment 2-6

[0059] Embodiment 2-6 antibacterial and antiviral graphene and nano-mirror aluminum composite material, compared with embodiment 1, the difference is that graphene lateral dimension and aperture are as shown in table 1, other is approximately the same as embodiment 1, in This will not be repeated here.

[0060] Preparation conditions and performance test results of table 1 embodiment 2-6

[0061]

[0062] It can be seen from Table 1 that with the reduction of the lateral size of graphene nanosheets, the far-infrared emission performance gradually increases and remains basically unchanged, indicating that the selection of smaller-sized graphene nanosheets and nano-mirror aluminum oxide porous carbon composites, It is more conducive to improving the far-infrared self-heating performance of the fabric. When porous graphene nanosheets are selected, the far-infrared self-heating performance and air permeability of the fabric are improved, and the improvement rate of small-sized...

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Abstract

The invention provides an antibacterial and antiviral graphene and nano mirror aluminum composite material as well as a preparation method and application thereof. The graphene and nano mirror surface aluminum composite material is prepared by the following steps: firstly, growing an aluminum metal organic framework on the surface of a graphene nanosheet through a hydrothermal method; then carrying out high-temperature calcination to carbonize an organic ligand in the aluminum metal organic framework to obtain porous carbon loaded with nano aluminum oxide particles; and finally, carrying out high-speed ball milling to obtain a porous carbon and graphene compound loaded with nano mirror aluminum oxide particles, namely the antibacterial and antiviral graphene and nano mirror aluminum composite material. The material is loaded on the surface of a fabric, the far-infrared self-heating performance of graphene is synergistically improved by utilizing the heat leakage prevention and multiple reflection effects of nano mirror surface aluminum oxide, the penetration depth of photons can be effectively improved, an efficient self-heating effect is achieved, and the temperature can be increased to 60 DEG C or above under illumination, so that the aim of rapidly heating and sterilizing is achieved.

Description

technical field [0001] The invention relates to the technical field of functional materials and textile modification, in particular to an antibacterial and antiviral graphene and nano-mirror aluminum composite material and its preparation method and application. Background technique [0002] Graphene is a hexagonal honeycomb-shaped two-dimensional nanomaterial composed of carbon atoms with sp2 hybrid orbitals, which can be regarded as a single-layer graphite sheet. In recent years, the antibacterial function of graphene and its derivatives has been researched and verified by the industry. Researchers believe that its antibacterial principle lies in the fact that when micron-sized bacteria walk on the sharp nano-scale two-dimensional material of graphene, the cell wall is cut instantly And die. In addition, graphene can also destroy cell membranes and kill bacteria through large-scale direct pumping of phospholipid molecules on cell membranes. At present, the antibacterial ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/194C01B32/15C01F7/30B82Y30/00B82Y40/00G01N21/01G01N21/64D01F1/10D06M15/37D06M11/74
CPCC01B32/194C01B32/15C01F7/30B82Y30/00B82Y40/00G01N21/6486G01N21/01D01F1/103D06M15/37D06M11/74D06M16/00G01N2021/0112C01B2204/20C01P2004/80
Inventor 曾伟荣曾伟城
Owner 广东极客亮技术有限公司
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