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A kind of antibacterial powder and its preparation method and use

An antibacterial powder and system technology, applied in the field of antibacterial agents, can solve the problems of poor dispersion of antibacterial components, low product purity, and small specific surface area, and achieve good antibacterial and antifungal effects, good application prospects, and uniform particle size distribution Effect

Active Publication Date: 2021-03-23
晋大纳米科技(厦门)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, silicon-based loaded antibacterial ions have become a research hotspot, and the preparation methods (precipitation method, solid-phase method) of silicon-based silver-loaded antibacterial agents generally use excessive AgNO 3 Mix directly with silicon-based carrier, then add reducing agent or precipitating agent to react, then wash off the unreacted silver nitrate and heat treatment method, the product purity is not high, the particle size is large and uneven, the specific surface area is small, and the dispersion of antibacterial components is not good well, easy to drain

Method used

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  • A kind of antibacterial powder and its preparation method and use
  • A kind of antibacterial powder and its preparation method and use

Examples

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Effect test

Embodiment 1

[0032] At room temperature, 0.01mol of silver nitrate, 0.10mol of zinc nitrate, and 0.10mol of copper nitrate were dissolved in 10mL of deionized water, and then 0.25mol of tartaric acid was added for complexation reaction. The reaction time was 30 minutes, and then some deionized Ionized water controls the pH of the solution to be acidic, which is 4, and a clear metal complex acidic solution is obtained.

[0033] Take 0.5 mol of tetraethyl orthosilicate solution (125mL), dissolve it in 270mL of isopropanol solution, and slowly add the metal complex acidic solution in the first step into tetraethyl orthosilicate isopropyl under the condition of ice bath Alcohol solution, stir vigorously to disperse, then slowly raise the temperature to 50°C for 60 minutes, evaporate the solution to dryness, put the obtained solid in a muffle furnace for calcination at 500°C, and obtain an antibacterial powder of silicon-based material doped with silver, copper, and zinc. In the antibacterial p...

Embodiment 2

[0038] At room temperature, 0.02mol of silver nitrate, 0.10mol of zinc nitrate, and 0.10mol of copper nitrate were dissolved in 12mL of deionized water, and then 0.28mol of tartaric acid was added for complexation reaction. The reaction time was 60 minutes, and then some deionized Ionized water controls the pH of the solution to be acidic, which is 4.5, and a clear metal complex acidic solution is obtained.

[0039] Take 0.6mol of tetraethyl orthosilicate solution (150mL), dissolve it in 320mL of isopropanol solution, and slowly add the metal complex acidic solution in the first step into tetraethyl orthosilicate isopropyl under ice bath condition Alcohol solution, stir vigorously to disperse, then slowly raise the temperature to 45°C for 30 minutes, evaporate the solution to dryness, put the obtained solid in a muffle furnace for calcination at 450°C, and obtain an antibacterial powder of silicon-based material doped with silver, copper, and zinc. In the antibacterial powder,...

Embodiment 3

[0044] At room temperature, weigh 0.01mol silver nitrate, 0.15mol zinc nitrate, 0.15mol copper nitrate dissolved in 20mL deionized water, then add 0.8mol citric acid for complexation reaction, the reaction time is 60 minutes, then add some Deionized water is used to control the pH of the solution to be acidic, which is 4.5, and a clear metal complex acidic solution is obtained.

[0045] Take 1.2 mol of tetraethyl orthosilicate solution (300mL), dissolve it in 600mL of isopropanol solution, and slowly add the metal complex acidic solution in the first step into tetraethyl orthosilicate isopropyl under ice bath condition Alcohol solution, stir vigorously to disperse, then slowly raise the temperature to 40°C for 30 minutes, evaporate the solution to dryness, put the obtained solid in a muffle furnace for calcination at 400°C, and obtain an antibacterial powder of silicon-based material doped with silver, copper, and zinc.

[0046] The basic particle size of the powder particles is...

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Abstract

The invention relates to an antibacterial powder, and a preparation method and an application thereof. The antibacterial powder is prepared by using oxide of silicon as a carrier which is loaded withsilver-copper-zinc composite metal elements. The preparation method comprises the following steps: with soluble silver salt, soluble zinc salt and soluble copper salt as raw materials, controlling a pH of a system with an excess complexing agent to 4 to 5, then adding an isopropanol solution containing ethyl orthosilicate under an ice bath condition, slowly raising a temperature, controlling the hydrolysis rate of tetraethyl orthosilicate, drying a solution by distillation, placing a solid into a muffle furnace, and carrying out calcination at 400 to 500 DEG C so as to obtain an antibacterialpowder. The antibacterial powder provided by the invention has a basic particle size of less than 10 um, is low in cost and superior in antibacterial performance, contains a variety of antibacterial metal ions, and can be extensively applied in antibacterial addition and application of various materials like plastics.

Description

technical field [0001] The invention relates to the technical field of antibacterial agents, in particular to an antibacterial powder and its preparation method and application. Background technique [0002] Nano-antibacterial materials are a new generation of functional materials that emerged in the 1990s and developed rapidly in the world. They have the function of independently inhibiting or killing microorganisms on their surfaces. In recent years, it has been widely used in various fields such as medical treatment, building materials, communications, household goods, household appliances, food packaging, and construction. [0003] Nano antibacterial materials generally use metal ion antibacterial agents, silver ion antibacterial performance is the best, the order is Ag>Hg>Cu>Cd>Cr>Pb>Co>Au>Zn>Fe>Mn>Mo>Sn. In order to ensure the antibacterial effect, antibacterial ions are usually immobilized by means of carriers, such as molecular si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/00A01N59/20A01P1/00A01P3/00
CPCA01N59/00A01N59/20
Inventor 吴永鑫钟元杰康朝晖林文端刘贻胜曾念华
Owner 晋大纳米科技(厦门)有限公司
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