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Preparation method of nano aluminum-silicon silver-loaded antibacterial agent powder with ultrahigh water dispersibility and superactivity

A nano-aluminum, dispersive technology, applied in botany equipment and methods, fungicides, biocides, etc., can solve the problems of large specific surface area and specific surface energy, small particle size of nano-alumina, and limited application effects, etc., to achieve The effect of small particle size, uniform particle size distribution, and simple raw materials

Pending Publication Date: 2021-04-13
XUANCHENG JINGRUI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small particle size of nano-alumina, the specific surface area and specific surface energy are large, it is easy to agglomerate, which limits its application effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for preparing a nano-aluminum-silicon silver-loaded antibacterial agent powder with ultrahigh water dispersibility and superactivity, which comprises the following steps:

[0019] Step 1: add anhydrous aluminum trichloride, anhydrous silicon tetrachloride, silver nitrate in benzyl alcohol solvent, the amount that is mixed with aluminum salt is 0.6 mol / liter, the amount of silicon salt is 0.3 mol / liter, silver salt The amount of precursor is 0.2 mol / L.

[0020] Step 2: Heat the precursor obtained in Step 1 at a temperature of 190° C. for 20 hours.

[0021] Step 3: Wash the precursor after the heat treatment in Step 2 with absolute ethanol, and dry the product in the air at 50° C. for 12 hours to obtain nano-alumina-silicon silver-loaded antimicrobial agent powder.

Embodiment 2

[0023] A method for preparing a nano-aluminum-silicon silver-loaded antibacterial agent powder with ultrahigh water dispersibility and superactivity, which comprises the following steps:

[0024] Step 1: Add aluminum isopropoxide, anhydrous silicon tetrachloride, and silver nitrate to the benzyl alcohol solvent, and the amount of the aluminum salt prepared is 1 mol / liter, the amount of the silicon salt is 0.4 mol / liter, and the amount of the silver salt is 0.4 mol / liter. 0.1 mol / L precursor.

[0025] Step 2: Heat the precursor obtained in Step 1 at a temperature of 180° C. for 20 hours.

[0026] Step 3: Wash the precursor after the heat treatment in Step 2 with absolute ethanol, and dry the product in the air at 50° C. for 12 hours to obtain nano-alumina-silicon silver-loaded antimicrobial agent powder.

Embodiment 3

[0028] A method for preparing a nano-aluminum-silicon silver-loaded antibacterial agent powder with ultrahigh water dispersibility and superactivity, which comprises the following steps:

[0029] Step 1: add anhydrous aluminum trichloride, anhydrous silicon tetrachloride, silver nitrate in absolute ethanol solvent, the amount that is mixed with aluminum salt is 2 mol / liter, the amount of silicon salt is 0.3 mol / liter, silver The amount of salt is 0.07 mol / L is the precursor.

[0030] Step 2: Heat the precursor obtained in Step 1 at a temperature of 150° C. for 24 hours.

[0031] Step 3: Wash the precursor after the heat treatment in Step 2 with absolute ethanol, and dry the product in the air at 100° C. for 12 hours to obtain nano-alumina-silicon silver-loaded antibacterial agent powder.

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PUM

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Abstract

The invention discloses a preparation method of nano aluminum-silicon silver-loaded antibacterial agent powder with ultrahigh water dispersibility and superactivity, and belongs to the field of fine chemical engineering. The antibacterial agent is prepared by adopting a low-temperature non-aqueous sol-gel method; aluminum salt, silicon salt and silver salt are added into an alcohol solvent to prepare a precursor, then the precursor is subjected to solvent heating treatment, and washing and drying are performed to obtain the nano aluminum-silicon silver-loaded antibacterial agent powder. The prepared nano aluminum-silicon silver-loaded antibacterial agent powder is small in particle size and uniform in particle size distribution, the average particle size is about 5 nm, and when the PH value is smaller than 5, the absolute value of the Zeta potential is about 30 millivolts. The prepared nano aluminum-silicon silver-loaded antibacterial agent powder has ultrahigh dispersity, ultrahigh activity, ultrahigh catalytic property, ultrahigh antibacterial property and high antiviral property, a very stable dispersion liquid can be formed by mixing the nano aluminum-silicon silver-loaded antibacterial agent powder with water, and the aqueous dispersion liquid can be stably kept for at least 100 hours when the mass percent concentration of the nano aluminum-silicon silver-loaded antibacterial agent is 0.1%-50%.

Description

technical field [0001] The invention relates to a method for preparing a nano-alumina-silicon silver-loaded antibacterial agent powder with ultrahigh water dispersibility and superactivity, and belongs to the field of fine chemicals. Background technique [0002] Nano-alumina has excellent physical and chemical properties and extremely wide range of uses, and is widely used as new green chemical materials such as catalysts and catalyst supports. However, due to the small particle size of nano-alumina, the specific surface area and specific surface energy are large, it is easy to agglomerate, which limits its application effect. When the nano-alumina powder can be stably dispersed in a certain medium, especially water, its application value will be greatly improved. [0003] Nano silica also has excellent physical properties, such as small particle size, large specific surface area, strong surface adsorption force, large surface energy, high chemical purity, good dispersion ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/14A01N25/08A01N59/16A01P1/00A01P3/00
CPCA01N25/14A01N25/08A01N59/16
Inventor 徐进
Owner XUANCHENG JINGRUI NEW MATERIAL CO LTD