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Antibacterial coating applied to air microorganism purification

An air microorganism and antibacterial coating technology, applied in the field of antibacterial, can solve the problems of certain toxicity, unstable physical and chemical structure, volatile, etc., achieve high-efficiency and long-lasting antibacterial effect, reduce the risk of nosocomial infection, and improve the adsorption effect. Effect

Active Publication Date: 2022-07-15
WUXI MATERNAL & CHILD HEALTH HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Non-metallic preparations include peracetic acid, sodium hypochlorite, hydrogen peroxide, ethanol, etc., but the above-mentioned antibacterial agents are extremely irritating to the human body and have certain toxicity, and their extensive use in the hospital will bring a certain degree of harm to patients and medical staff, and the above-mentioned types The physical and chemical structure of antibacterial agents is unstable, easy to volatilize and decompose, and the bactericidal effect cannot last; metal preparations include antibacterial materials containing Ag, Cu, Zn, Ga and other elements
Among them, Ag, as an efficient and classic antibacterial material, has been widely concerned and applied since ancient times, but because Ag is a noble metal element, the price is relatively expensive, and it cannot be widely used in the hospital environment.
Cu, Zn, Ga, etc. also have certain antibacterial properties, but there is still a big gap in antibacterial effect compared with silver

Method used

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  • Antibacterial coating applied to air microorganism purification
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  • Antibacterial coating applied to air microorganism purification

Examples

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Effect test

Embodiment 1

[0021] An antibacterial coating applied to air microbial purification uses a 600-mesh straight-through cordierite honeycomb ceramic carrier as an integral structural carrier, the carrier is a cuboid structure, and the size is 250*250*200mm. The preparation method of the antibacterial coating comprises the following steps:

[0022] S1, the Cu (NO 3 ) 2 ·3H 2 O and Fe (NO 3 ) 3 ·9H 2 O is mixed at a molar ratio of 1:1, then added to deionization and stirred until completely dissolved, and then added with an average particle size of 10nm and a specific surface area of ​​150m 2 / g of anatase TiO 2 Powder in the above aqueous solution, TiO 2 with Fe(NO 3 ) 3 ·9H 2 The molar ratio of O was 2.5:1, and then continued stirring for 1 h to obtain the precursor mixture;

[0023] S2. The pH of the precursor mixture obtained in step S1 is adjusted to 9 by dropwise addition of monoethanolamine, and the mixture is filtered under reduced pressure after stirring for 1 hour. The filt...

Embodiment 2

[0030] An antibacterial coating applied to air microbial purification uses a 400-mesh straight-through cordierite honeycomb ceramic carrier as an integral structural carrier, the carrier is a cuboid structure, and the size is 250*250*200mm. The preparation method of the antibacterial coating comprises the following steps:

[0031] S1, the Cu (NO 3 ) 2 ·3H 2 O and Fe (NO 3 ) 3 ·9H 2 O is mixed according to the molar ratio of 2.5:1, then added to deionization and stirred until completely dissolved, and then added with an average particle size of 30nm and a specific surface area of ​​200m 2 / g of anatase TiO 2 Powder in the above aqueous solution, TiO 2 with Fe(NO 3 ) 3 ·9H 2 The molar ratio of O was 2.5:1, and then continued stirring for 2h to obtain the precursor mixture;

[0032] S2. The pH of the precursor mixture obtained in step S1 is adjusted to 11 by dropwise addition of tetraethylammonium hydroxide, and the mixture is filtered under reduced pressure after stir...

Embodiment 3

[0039] An antibacterial coating applied to air microbial purification uses a 600-mesh straight-through cordierite honeycomb ceramic carrier as an integral structural carrier, the carrier is a cuboid structure, and the size is 250*250*200mm. The preparation method of the antibacterial coating comprises the following steps:

[0040] S1, the Cu (NO 3 ) 2 ·3H 2 O and Fe (NO 3 ) 3 ·9H 2 O is mixed according to the molar ratio of 1.5:1, then added to deionization and stirred until completely dissolved, and then added with an average particle size of 20nm and a specific surface area of ​​180m 2 / g of anatase TiO 2 Powder in the above aqueous solution, TiO 2 with Fe(NO 3 ) 3 ·9H 2 The molar ratio of O was 2:1, and then continued stirring for 2h to obtain the precursor mixture;

[0041] S2. The pH of the precursor mixed solution obtained in step S1 is adjusted to 10 by dropwise addition of tetraethylammonium hydroxide, and after stirring for 2 h, the mixed solution is filter...

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Abstract

The invention relates to an antibacterial coating applied to air microbial purification, 150-200g / L of the antibacterial coating is coated on a straight-through honeycomb ceramic carrier, the antibacterial coating contains CuO-Ga2O3-TiO2 composite oxide, a silicon-aluminum molecular sieve and a silica sol solid content, the molar ratio of Ti to Cu is (0.8-2.5): 1, the molar ratio of Ga to Cu is (0.02-0.05): 1, the mass ratio of the CuO-Ga2O3-TiO2 composite oxide to the silicon-aluminum molecular sieve is (8-10): 1, and the mass ratio of the silica sol solid content to the CuO-Ga2O3-TiO2 composite oxide to the silicon-aluminum molecular sieve is (8-10): 1. And the balance is a silica sol solid content. According to the invention, the base metal oxide is used as the active component, and the long-term efficient killing effect on bacteria and fungi in the air is achieved.

Description

technical field [0001] The invention belongs to the field of antibacterial technology, in particular to an antibacterial coating applied to air microorganism purification. Background technique [0002] Healthcare-associated infections (HAIs) are an important public health problem that has received widespread attention due to their high cost and preventability. Nosocomial infection is an important part of HAI. As a public institution with dense personnel, high mobility, and the accumulation of various microorganisms, the impact of indoor aerosols containing bacteria, fungi and other microorganisms on the human body cannot be underestimated. Therefore, it is very important to control the microbial pollution in indoor air. Disinfection and sterilization of hospital air is one of the important means to prevent and control HAI, prevent the spread of infectious diseases, maintain medical quality, and ensure the safety of patients and medical staff. [0003] At present, the commo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/14C09D7/61B01D53/02
CPCC09D1/00C09D5/14C09D7/61B01D53/02B01D2257/91Y02A50/20
Inventor 章恒孙亮
Owner WUXI MATERNAL & CHILD HEALTH HOSPITAL
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