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Ag-carrying nano antibiotic material and its preparation method and use

A nano-antibacterial material, silver-loaded technology, applied in the direction of botany equipment and methods, applications, chemicals for biological control, etc., can solve the problems of poor heat resistance, poor safety and chemical stability, drug resistance, etc. Achieve excellent comprehensive performance, excellent antibacterial properties, and good antibacterial effect

Inactive Publication Date: 2008-11-19
SHANGHAI SONGMING COMML CONSULTANT & SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic antibacterial materials have short-term high-efficiency bactericidal effects, but their safety and chemical stability are poor, and they are prone to microbial resistance, especially their poor heat resistance (<200°C) is their biggest weakness, which makes them unsuitable for high-temperature processing in applications. Decomposition products are even toxic

Method used

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  • Ag-carrying nano antibiotic material and its preparation method and use
  • Ag-carrying nano antibiotic material and its preparation method and use
  • Ag-carrying nano antibiotic material and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Add 20 grams of surfactant carboxymethyl cellulose to NH 4 h 2 PO 4 and ZrOCl 2 ·8H 2 The aqueous solution of O was stirred at room temperature for 10 minutes to form a co-precipitation, filtered, washed with water, and then the washed product ZrO(OH) 2 , performing centrifugal dehydration, then drying the obtained product at 80°C for 8 hours, calcining at 700°C for 1 hour, and jet crushing to obtain a nanometer mesoporous zirconium phosphate carrier;

[0022] Said NH 4 h 2 PO 4 and ZrOCl 2 ·8H 2 In aqueous solution of O, NH 4 h 2 PO 4 The content of ZrOCl is 1.0mol / L, ZrOCl 2 ·8H 2 O content is 0.5mol / L;

[0023] (2) The carrier obtained in step (1) is added with dispersant polyvinyl alcohol and water to obtain suspension A;

[0024] AgNO 3 , NH 3 ·H 2 O was mixed with water, and reacted at room temperature for 45 minutes to obtain the silver ammine ion aqueous solution B;

[0025] Mix A and B, add 10ml oxalic acid, the resulting nano-scale silve...

Embodiment 2

[0032] (1) Add 30 grams of surfactant to NH 4 h 2 PO 4 and ZrOCl 2 ·8H 2 The aqueous solution of O was stirred at 25°C for 20 minutes to form a co-precipitation, filtered, washed with water, and the washed product ZrO(OH) 2 , using a centrifuge to dehydrate for 20 minutes, then drying the obtained product at 90°C for 8 hours, calcining at 800°C for 1.5 hours, and jet crushing to obtain a nano-mesoporous zirconium phosphate carrier;

[0033] Said NH 4 h 2 PO 4 and ZrOCl 2 ·8H 2 In aqueous solution of O, NH 4 h 2 PO 4 The content of ZrOCl is 1.0mol / L, ZrOCl 2 ·8H 2 O content is 0.6mol / L;

[0034] Said surfactant is carboxymethyl cellulose (CMC);

[0035] (2) The carrier obtained in step (1) is added with a dispersant and water to obtain a suspension A;

[0036] AgNO 3 , NH 3 ·H 2 O was mixed with water, and reacted at room temperature for 50 minutes to obtain an aqueous solution B of silver ammine ions;

[0037] Mix A and B, add 20ml of oxalic acid, the resul...

Embodiment 3

[0046] The antibacterial material and resin (PP-R) of Example 1 are mixed evenly in a low-speed mixer, and then according to certain process conditions, pipes and pipe fittings of various specifications are produced respectively through a pipe production line and an injection molding machine. The test results of the main technical performance are as follows:

[0047] Antibacterial evaluation:

[0048] The antibacterial test was carried out by using the vibration test method of the first volume of the third edition of the "Disinfection Technical Specifications" of the Ministry of Health. We tested Gram-negative and positive bacteria, Escherichia coli and Staphylococcus aureus. The results are shown in Table 3. Visible The water supply pipe prepared by us has antibacterial effect and has advantages over other products in terms of high antibacterial efficiency.

[0049] Table 3 Antibacterial test results of antibacterial water supply pipes

[0050]

[0051] Evaluation of mec...

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Abstract

The invention discloses an silver-supported antibacterial nano-material and the preparation method and the application thereof. The preparation method comprises the following steps: (1) adding surfactant to a water solution of NH4H2PO4 and ZrOCl2*8H2O, co-precipitating, filtering, rinsing, dewatering, drying and pulverizing to obtain a nano-scale mesoporous zirconium phosphate carrier; and (2) adding dispersant and water to the carrier prepared in the step (1) to obtain a suspension A; mixing AgNO3, NH3*H2O and water to obtain a sliver-ammine complex ion water solution B; mixing the suspension A and the sliver-ammine complex ion water solution B, adding acid to inhibit the hydrolysis so that the generated nano-scale silver ions cluster is adhered to the carrier; and filtering, rinsing, dewatering, drying, sintering and pulverizing to obtain nano-scale silver ion antibacterial powder. The antibacterial nano-material has excellent antibacterial performances such as persistent effect, stability, high temperature resistance, etc. and can be applied in the fields such as building materials, public facilities, medical facilities and appliance, daily products, etc.

Description

technical field [0001] The invention relates to a nano antibacterial material and a preparation method thereof, in particular to a silver-loaded nano antibacterial material and a preparation method thereof. Background technique [0002] Harmful bacteria cause great harm to people's health and life. According to WHO reports, among the 52 million people who died in the world in 1995, 17 million people died from bacterial infection. The pathogenic Escherichia coli O-157 infection that occurred in Japan in 1996 caused a nationwide food poisoning incident. [0003] Therefore, countries all over the world attach great importance to the research of antibacterial materials, which are emerging international ecological environment materials closely related to human health development and environmental protection in recent years. In developed countries and regions in the world, the research and application of antibacterial materials are extremely extensive. The first research is an o...

Claims

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Application Information

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IPC IPC(8): A01N59/16A01N25/12A01N25/08A01P1/00
Inventor 蒋建明
Owner SHANGHAI SONGMING COMML CONSULTANT & SERVICE
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