Method for preparing ZnO/attapulgite composite antibacterial agent

A compound antibacterial agent and attapulgite technology, applied in the field of inorganic non-metallic materials, can solve the problems of low antibacterial rate of pure ZnO, affect antibacterial performance, small contact area, etc., achieve low price, improve antibacterial effect, and simple preparation process Effect

Inactive Publication Date: 2010-07-14
杨倩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The price of existing ZnO is high, and the antibacterial rate of pure ZnO is low
As an antibacterial agent, in the preparation process of antibacterial materials, due to the small contact area, it cannot fully contact with microorganisms, which affects its antibacterial performance.

Method used

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  • Method for preparing ZnO/attapulgite composite antibacterial agent
  • Method for preparing ZnO/attapulgite composite antibacterial agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 15g Zn(NO 3 ) 2 ·6H 2 O was dissolved in 80mL of distilled water, and 7.5g of attapulgite powder with an average particle size of less than 30 microns was added to the solution, stirred, and at the same time, after ultrasonic dispersion for 15min, the stirring was continued to obtain attapulgite and Zn(NO 3 ) 2 Suspension composed; add NaOH solution containing 4g of NaOH quality to the suspension, stir until fully mixed to obtain a suspension composed of zinc hydroxide and attapulgite, and suction filter the suspension , the filter residue was dried at 80-90°C for 2.5h, calcined at 500°C for 2h, and naturally cooled to room temperature to obtain the ZnO / attapulgite composite antibacterial agent.

[0021] The powder is tested according to the following method. Weigh 10g of peptone, 5g of beef extract, and 5g of NaCl solid into a 1000mL Erlenmeyer flask, fully dissolve, adjust the pH to 7, and sterilize in a high-temperature sterilizer at 121°C for 30min to obtain LB ...

Embodiment 2

[0023] 15g ZnSO 2 Dissolve in 80mL of distilled water, add 6g of attapulgite powder with an average particle size of less than 30 microns to the solution, stir, and at the same time disperse with ultrasonic waves for 15min, continue stirring to obtain attapulgite and ZnSO 2 Suspension composed; add NaOH solution containing 3.75g of NaOH quality to the suspension, stir until fully mixed to obtain a suspension composed of zinc hydroxide and attapulgite, and pump the suspension Filter, take the filter residue, dry at 80-90°C for 2 hours, calcinate at 480°C for 3 hours, and cool naturally to room temperature to prepare the ZnO / attapulgite composite antibacterial agent.

[0024] The obtained product is detected by the detection method of Example 1, and its antibacterial performance reaches 96%.

Embodiment 3

[0026] 15g ZnCl 2 Dissolve in 80mL of distilled water, add 9g of attapulgite powder with an average particle size of less than 30 microns to the solution, stir, and at the same time disperse with ultrasonic waves for 15min, continue stirring to obtain attapulgite and ZnCl 2 Suspension composed; add NaOH solution containing 4.5g of NaOH quality to the suspension, stir until fully mixed to obtain a suspension composed of zinc hydroxide and attapulgite, and pump the suspension Filter, take the filter residue and dry at 80-90°C for 3 hours, calcined at 520°C for 1 hour, and cool naturally to room temperature to prepare the ZnO / attapulgite composite antibacterial agent.

[0027] The obtained product is detected by the detection method of Example 1, and its antibacterial performance reaches 97%.

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Abstract

The invention discloses a method for preparing a ZnO/attapulgite composite antibacterial agent, comprising the following steps: dissolving water-soluble inorganic zinc salt in distilled water, adding attapulgite powder in the solution, stirring and dispersing for 15min by ultrasonic wave at the same time, and continuing stirring to obtain turbid liquid consisting of the attapulgite and the water-soluble inorganic zinc salt; and adding NaOH solution in the turbid liquid, stirring till fully mixing to obtain turbid liquid of zinc hydroxide and the attapulgite, filtering the turbid liquid, taking filter residue and drying, calcining, and naturally cooling to the room temperature to obtain the ZnO/attapulgite composite antibacterial agent. The invention has the advantages of simple preparation process, convenient operation and low cost, takes the attapulgite with larger specific surface area as a carrier to absorb a certain amount of ZnO, thus being capable of effectively improving the antibiosis property of ZnO; and the prepared material can be widely used in fields such as antibiotic plastics, antibiotic ceramics, cosmetics packaging materials and the like.

Description

technical field [0001] The invention discloses a ZnO / attapulgite composite antibacterial agent and a preparation method thereof, belonging to the field of inorganic non-metallic materials. Background technique [0002] With the improvement of living standards, people have higher and higher requirements for a clean and healthy life. Therefore, the factors that endanger human health have attracted more and more attention. According to the report of the World Health Organization (WHO), an average of 52 million people die every year in the world, of which 17 million are caused by bacterial infections, accounting for about one-third. These infectious diseases include cholera, pneumonia, dysentery, tuberculosis, etc. In 1996, the nationwide food poisoning incident caused by pathogenic Escherichia coli O-157 in Japan once caused panic all over the world. Therefore, how to control the growth and reproduction of harmful bacteria is still the focus of people's attention in today's a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/08A01N59/16A01P1/00
Inventor 杨倩
Owner 杨倩
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