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Method for preparing superfine composite inorganic antimicrobial agent

An inorganic antibacterial agent, technology of preparation process, applied in botany equipment and methods, biocide, animal repellent, etc., can solve the problems of coarse particle size, easy discoloration, unstable fixation of antibacterial components, etc., and achieve low production cost , uniform particle size and good market prospects

Inactive Publication Date: 2005-08-17
NORTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Most of the inorganic antibacterial agents currently on the market use silver ions as the main antibacterial component. Natural or artificial raw materials such as silicate, zeolite, etc. are used as carriers and prepared through adsorption, ion exchange and other processes. Insufficient fixation in the carrier, easy to change color, etc., cannot well meet the requirements of practical applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Weigh the materials respectively according to the ratio of metatitanic acid: 98% sulfuric acid (wt)=1: 2.0~3.0, first dilute 98% sulfuric acid with deionized water to 70~90%, and place it in the reactor. Finely ground, sieved through a 325-400 mesh sieve, and then added to sulfuric acid; start the mixer to carry out acidolysis reaction. The reaction temperature is controlled between 70 and 130°C, and the reaction time is controlled between 10 and 40 minutes; deionized water is measured according to the ratio of metatitanic acid: deionized water (wt) = 1:3 to 5, and added to the reactor for leaching Acid hydrolysis product, the temperature is controlled between 40 ~ 70 ℃; after filtering out the insoluble matter, the titanium solution is obtained, and its concentration is 80 ~ 210g / L (using TiO 2 gauge, the same below), calibration for backup.

[0035] Measure 80ml of titanium liquid (concentration is 180g / L) prepared by the above method and add it to the reactor, then ...

Embodiment 2

[0045] Get 1g of the antibacterial agent prepared in Example 1, add it to 100ml of 0.05M potassium persulfate solution and react at 50°C for 6h, then filter, wash, and dry to obtain the antibacterial agent containing trivalent silver.

[0046] Antibacterial experiment result shows, concentration 100mg / L, when there is no light, the antibacterial agent prepared by embodiment 2 reaches 100% to the three kinds of bacteria described in example 1 20min killing rate.

Embodiment 3

[0048] Measure the titanium liquid 55ml (concentration is 150g / L) prepared by the method of example 1, weigh ZrOCl 2 ·8H 2 O7.55g, dissolve in 20ml deionized water, add in the reactor, start the mixer, add dropwise 10ml AgNO 3 solution (containing AgNO 3 1.00g); then add 47.07g urea, react for 3h; finally add 80ml of Na 2 HPO 4 solution (containing Na 2 HPO 4 12H 2 (23.60g), reacted for 0.5h, added compounded surface modifier (composed of OP-10 and pull-off powder BX-78, the weight ratio of the two is 1:0.4) 1.5g, reacted for 1h, after the reaction , centrifuged, and the filter cake was fully washed with water, and then soaked three times with 95% ethanol of the same volume as the filter cake, and dried at 80° C. for 10 h. The dried material is dispersed and calcined at 1000°C for 3 hours to obtain the product with an average particle size of 90nm.

[0049] Antibacterial test results show that when the concentration is 100mg / L, when there is no light, the killing rate...

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PUM

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Abstract

The present invention is preparation process of superfine compound inorganic antibiotic. Technologically, the present invention is that silver ion as depositing crystal nucleus is coated with titanium or other metal ion obtained with urea as precipitant and phosphate as secondary coating, and re-compounded with surfactant, and through dewatering, drying, calcining at 700-1100 for 2-10 hr, superfine antibiotic powder is prepared. The prepared antibiotic powder has relatively high bacteria and fungi killing effect, is superior to available silver antibiotic and titanium antibiotic, and may be used widely in fabric, plastic, paint, enamel, water processing and other fields.

Description

technical field [0001] The invention relates to a preparation method of a novel inorganic antibacterial agent, belonging to the technical field of inorganic antibacterial agent preparation. Background technique [0002] Human anti-disease health care is inseparable from antibacterial agents, which can be divided into organic antibacterial agents and inorganic antibacterial agents according to their components. Organic antibacterial agents are traditional antibacterial agents, which have been widely used at present, but they generally have defects such as volatile, easy to decompose, poor heat resistance, and bacteria are prone to drug resistance. [0003] Due to the advantages of non-volatility, good heat resistance, low drug resistance and high safety, inorganic antibacterial agents have become one of the hot spots in the development of antibacterial agents. Inorganic antibacterial agents are generally solid powders, which are mainly used in the form of additives to prepar...

Claims

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Application Information

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IPC IPC(8): A01N59/26
Inventor 黄岳元仪建华郭人民谢建榕米钰王亚平祖庸
Owner NORTHWEST UNIV
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