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Mesoporous silicon-carbon-loaded metal oxide compound as well as preparation method and application thereof

A technology for loading metals and oxides, which is applied in the direction of silicon oxide, silicon dioxide, zinc oxide/zinc hydroxide, etc., which can solve the problems of cytotoxicity, easy agglomeration, and less ingredients, so as to reduce the amount of use and significantly inhibit bacteria Effect, solve the effect of easy reunion

Pending Publication Date: 2020-11-20
ZHONGKAI UNIV OF AGRI & ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this type of inorganic nanoparticles is also cytotoxic to mammalian cells and cannot be used in excess; moreover, due to the large surface energy of the nanoparticles, they are prone to agglomeration, resulting in fewer ingredients that really play a role

Method used

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  • Mesoporous silicon-carbon-loaded metal oxide compound as well as preparation method and application thereof
  • Mesoporous silicon-carbon-loaded metal oxide compound as well as preparation method and application thereof
  • Mesoporous silicon-carbon-loaded metal oxide compound as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] An embodiment of the mesoporous silicon-carbon-supported metal oxide composite of the present invention, the preparation raw materials of the mesoporous silicon-carbon-supported metal oxide composite in this embodiment include dopamine hydrochloride, tetraethyl orthosilicate and acetic acid zinc.

[0028] The preparation method of the mesoporous silicon carbon supported metal oxide composite described in this example is as follows:

[0029] In an oil bath at 95°C, add 2.00 g of cetyltrimethylammonium bromide, 0.08 g of triethanolamine, 0.45 g of dopamine hydrochloride and 2.02 g of zinc acetate into 20 mL of deionized water, and stir at 500 rpm for 1 h; Add 1.5 mL of tetraethyl orthosilicate dropwise to the solution every second, and continue to stir the mixture for 1 h; then collect the product by centrifugation, and wash 3 times with absolute ethanol to remove residual reactants; ℃ for 10 h; finally, calcined at 550 °C for 6 h in a nitrogen atmosphere to obtain a mes...

Embodiment 2

[0031] An embodiment of the mesoporous silicon-carbon-supported metal oxide composite of the present invention, the preparation raw materials of the mesoporous silicon-carbon-supported metal oxide composite in this embodiment include dopamine hydrochloride, tetraethyl orthosilicate and acetic acid zinc.

[0032] The preparation method of the mesoporous silicon carbon supported metal oxide composite described in this example is as follows:

[0033] In an oil bath at 90°C, add 2.1 g of cetyltrimethylammonium bromide, 0.10 g of triethanolamine, 0.36 g of dopamine hydrochloride and 1.85 g of zinc acetate into 20 mL of deionized water, and stir at 600 rpm for 1.5 h; Add 1.4 mL of tetraethyl orthosilicate dropwise to the solution at 1 drop per second, and continue to stir the mixture for 1.5 h; then collect the product by centrifugation, and wash with absolute ethanol 3 times to remove residual reactants; then the product Placed at 55°C for 12h; finally, calcined at 500°C for 6.5h ...

Embodiment 3

[0035] An embodiment of the mesoporous silicon-carbon-supported metal oxide composite of the present invention, the preparation raw materials of the mesoporous silicon-carbon-supported metal oxide composite in this embodiment include dopamine hydrochloride, tetraethyl orthosilicate, acetic acid Zinc and copper acetate.

[0036] The preparation method of the mesoporous silicon carbon supported metal oxide composite described in this example is as follows:

[0037] In an oil bath at 93°C, add 1.95g of cetyltrimethylammonium bromide, 0.075g of triethanolamine, 0.43g of dopamine hydrochloride, 2.02g of zinc acetate and 0.02g of copper acetate into 20mL of deionized water to Stir at 700rpm for 1.2h; add 1.6mL tetraethyl orthosilicate dropwise to the solution at 1 drop per second, and continue stirring the mixture for 1.2h; then collect the product by centrifugation and wash 3 times with absolute ethanol to remove residual reaction Then the product was placed at 60°C for 9h; finall...

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Abstract

The invention provides a mesoporous silicon-carbon-loaded metal oxide compound as well as a preparation method and application thereof, and relates to a compound as well as a preparation method and application thereof. The mesoporous silicon-carbon-loaded metal oxide compound is prepared from the following raw materials: tetraethyl orthosilicate, dopamine hydrochloride and a metal precursor; and the metal precursor is at least one of zinc acetate and copper acetate. The mesoporous silicon-carbon-loaded metal oxide compound is prepared by adopting a one-step method, and dopamine is used for modifying mesoporous silicon dioxide, so that the nano metal oxide can be effectively dispersed, and the loading capacity of the metal oxide is improved; and meanwhile, after calcination, PDA is converted into carbon, photo-induced electrons generated by photocatalysis of the metal oxide can be rapidly transferred, electron-hole pair compounding is reduced, the antibacterial efficiency is improved, the use amount of the metal oxide can be reduced, and the cytotoxicity is reduced.

Description

technical field [0001] The present invention relates to a compound and its preparation method and application, in particular to a mesoporous silicon carbon supported metal oxide compound and its preparation method and application. Background technique [0002] With the overuse of antibiotics, the resistance of bacteria has also increased, and the continuous use of the previous effective concentration of antibiotics to kill bacteria cannot eradicate the bacteria. In response to this problem, inorganic nanoparticles with antibacterial properties have been developed, such as nano-silver, nano-zinc oxide and nano-copper oxide. However, this type of inorganic nanoparticles is also cytotoxic to mammalian cells and cannot be used in excess; moreover, due to the large surface energy of the nanoparticles, they are prone to agglomeration, resulting in fewer ingredients that actually play a role. Therefore, choosing a suitable carrier plays a vital role in its loading: on the one hand...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K41/00A61K47/04A61K47/18A61P31/04C01B33/18C01G9/02C01G3/02
CPCA61K41/00A61K47/02A61K47/18A61P31/04C01B33/18C01G9/02C01G3/02C01P2004/82C01P2006/12C01P2006/16C01P2006/14
Inventor 周红军邱松发刘光华周新华
Owner ZHONGKAI UNIV OF AGRI & ENG
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