Antibacterial agent and preparation method thereof

A kind of technology of antibacterial agent and inorganic antibacterial agent, applied in the field of antibacterial agent and preparation thereof

Inactive Publication Date: 2017-12-01
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Silver ions and titanium ions are commonly used as antibacterial agents in materials, but silver ions and titanium ions still have shortcomings in antibacterial agents. How to improve the antibacterial performance of materials is a research topic in the field of antibacterial agents.

Method used

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  • Antibacterial agent and preparation method thereof
  • Antibacterial agent and preparation method thereof
  • Antibacterial agent and preparation method thereof

Examples

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Effect test

preparation example Construction

[0027] A kind of preparation method of above-mentioned antibacterial agent, comprises the following steps:

[0028] 1) Weigh a certain amount of absolute ethanol, deionized water and nitric acid to prepare solution B; the mass ratio of absolute ethanol, deionized water and nitric acid is (120-160): (200-280): (60-120 ).

[0029] 2) Weigh a certain amount of butyl titanate, absolute ethanol, and acetic acid, slowly drop the butyl titanate into the mixture of absolute ethanol and acetic acid under rapid stirring, and prepare solution C; , absolute ethanol, acetic acid mass ratio is (20-60): (60-90): (120-160).

[0030] 3) Drop solution B into solution C to obtain a uniform and transparent sol; the mass ratio of solution B to solution C is (120-160): (40-60).

[0031] 4) Slowly add AgNO3 solution to the sol, and continue to stir for 4-6 hours to obtain a light yellow opaque gel;

[0032] 5) Vacuum drying the gel at 60-80°C for 8-10h, and calcining the obtained xerogel in a muf...

Embodiment 1

[0035] 1) Weigh 120g of absolute ethanol, 200g of deionized water and 60g of nitric acid to prepare solution B.

[0036] 2) Weigh 20 g of butyl titanate, 60 g of absolute ethanol, and 120 g of acetic acid, and slowly drop the butyl titanate into the mixture of absolute ethanol and acetic acid under rapid stirring to prepare solution C.

[0037] 3) 120 g of solution B was dropped into 40 g of solution C to obtain a uniform and transparent sol.

[0038] 4) Slowly add AgNO3 solution to the sol. After continuing to stir for 4 h, a pale yellow opaque gel was obtained.

[0039] 5) The gel was vacuum-dried at 60° C. for 8 hours, and the obtained dry gel was then put into a muffle furnace for calcination at 480° C. for 2 hours.

[0040] 6) The powder Ag obtained after calcining + -TiO 2 , ground and passed through a 200-mesh sieve to obtain the antibacterial agent P1.

Embodiment 2

[0050] 1) Weigh 160g of absolute ethanol, 280g of deionized water and 120g of nitric acid to prepare solution B.

[0051] 2) Weigh 60 g of butyl titanate, 90 g of absolute ethanol, and 160 g of acetic acid, and slowly drop the butyl titanate into the mixture of absolute ethanol and acetic acid under rapid stirring to prepare solution C.

[0052] 3) 160 g of solution B was dropped into 60 g of solution C to obtain a uniform and transparent sol.

[0053] 4) Slowly add AgNO3 solution to the sol. After continuing to stir for 6 h, a pale yellow opaque gel was obtained.

[0054] 5) The gel was vacuum-dried at 80° C. for 10 h, and the obtained dry gel was then put into a muffle furnace for calcination at 540° C. for 4 h.

[0055] 6) The powder Ag obtained after calcining + -TiO 2 , grind and pass through a 200-mesh sieve to obtain the antibacterial agent P2.

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Abstract

The invention relates to an antibacterial agent and a preparation method thereof. The antibacterial agent is an Ag<+>-TiO2 composite inorganic antibacterial agent. TiO2 is capable of automatically generating active electrons with negative electricity and holes with positive electricity under the light condition to form an electron-hole pair, and is subjected to catalytic reaction with surrounding oxygen and air to generate hydroxyl radicals and atomic oxygen. The two products can be subjected to oxidation reaction with organic matters in bacteria to generate CO2 and H2O, thereby achieving the effect of killing the bacteria within a short period of time. Ag<+> with positive charges can attract cell walls of the bacteria with negative electricity, and silver ions react with sulfydryl of zymoprotein in cell bodies to make protein of the cells solidified, so that bacterial death is finally caused.

Description

technical field [0001] The invention belongs to the field of antibacterial agents in polymer materials, in particular to an antibacterial agent and a preparation method thereof. Background technique [0002] Antibacterial materials prepared by adding an appropriate amount of antibacterial agents have attracted widespread attention. This functional material itself has the function of inhibiting and killing harmful microorganisms. During its use, it can effectively cut off the contact between humans and pathogenic bacteria. , to reduce the spread of disease. [0003] Silver ions and titanium ions are commonly used as antibacterial agents in materials, but silver ions and titanium ions still have shortcomings in antibacterial agents. How to improve the antibacterial properties of materials is a research topic in the field of antibacterial agents. Contents of the invention [0004] The object of the present invention is to provide an antibacterial agent and a preparation meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/22C08K3/00C08L23/12C08L67/02C08L23/06C08L77/02C08L25/06
CPCC08K3/22C08K2003/2241C08L23/12C08L67/02C08L23/06C08L77/02C08L25/06
Inventor 刘凯徐志海孙启林王添琪
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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