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Silver-loaded zirconium phosphate/nano-titanium dioxide composite antibacterial agent and preparation method thereof

A technology of nano-titanium dioxide and silver-loaded zirconium phosphate, which is applied in the fields of botanical equipment and methods, biocides, disinfectants, etc., can solve the problems of drug resistance of bacteria, the reduction of antibacterial performance of antibacterial agents, and affect the performance of use, so as to achieve antibacterial Superior performance, simple production method, good compatibility

Active Publication Date: 2010-06-09
WENGFU (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic antibacterial agents and inorganic ion-dissolving antibacterial agents may cause some bacteria to develop drug resistance during long-term use, thereby reducing the antibacterial performance of the antibacterial agent and affecting its performance
The photocatalytic antibacterial agent is antibacterial through the strong oxidation and other properties of the photocatalytic reaction, which will not cause the bacteria to develop drug resistance, but it needs to be in an environment with light to have antibacterial properties, so its use is also subject to certain restrictions.
At present, there are reports of compound antibacterial agents prepared by compounding inorganic ion-dissolving antibacterial agents and photocatalysts, but it is only a simple compounding of inorganic ion-dissolving antibacterial agents and photocatalysts. The compatibility is not very good, which affects its large-scale application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] First, 590g of ammonium phosphate is reacted with 1017g of zirconium nitrate to produce zirconium phosphate. After washing the zirconium phosphate, add 1.4L of deionized water to prepare a 30% suspension, and then add 4.9g of AgNO to the system. 3 , Make the loading of silver reach 0.5% (introduce silver with silver nitrate, the amount of silver added is calculated based on the amount of zirconium phosphate), slowly add 442g of titanium tetrachloride after aging for 2 hours to make TiO 2 The addition amount reaches 30% (using titanium tetrachloride to introduce TiO 2 , TiO 2 The amount of addition is based on the amount of zirconium phosphate), after the addition of titanium tetrachloride, add 97g of ethyl orthosilicate to make SiO 2 The addition amount reaches 15% (using tetraethyl orthosilicate to introduce SiO 2 , SiO 2 TiO 2 The amount is the calculation basis), and finally add 11.8gAgNO 3 , So that the amount of silver loaded reaches 3.5% (silver nitrate is used to intr...

Embodiment 2

[0018] First, 470g of 83% phosphoric acid is reacted with 966g of zirconium oxychloride octahydrate to produce zirconium phosphate. After washing the zirconium phosphate, 5.4L of deionized water is added to make a 10% suspension, and then 34.2g of AgNO is added to the system. 3 , Make the loading of silver reach 3.5% (introduce silver with silver nitrate, the amount of silver added is calculated based on the amount of zirconium phosphate), after 36 hours of aging, slowly add 132g of butyl titanate to make TiO 2 The addition amount reaches 5%. After adding butyl titanate, add 19g ethyl silicate to make SiO 2 Add up to 18% (using ethyl silicate to introduce SiO 2 , SiO 2 TiO 2 The amount is the calculation basis), and finally add 0.3gAgNO 3 , So that the amount of silver loaded reaches 0.5% (silver nitrate is used to introduce silver, and the amount of silver added is mixed with SiO 2 TiO 2 The amount is the calculation basis). After aging for 24 hours, it is filtered, and the filter...

Embodiment 3

[0020] First, 656g sodium phosphate is reacted with 1066g zirconium sulfate tetrahydrate to generate zirconium phosphate. After washing the zirconium phosphate, add 0.9L deionized water to make a 40% suspension, and then add 24.4g AgNO to the system 3 , Make the silver loading reach 2.5%, add 149g titanyl sulfate after 6 hours of aging to make TiO 2 The addition amount reaches 12%. After the titanyl sulfate is added, 33g ethyl silicate is added to make SiO 2 The addition amount reaches 13% (using ethyl silicate to introduce SiO 2 , SiO 2 TiO 2 The amount is the calculation basis), and finally add 2.6gAgNO 3 , So that the amount of silver loaded reaches 2.0% (silver nitrate is used to introduce silver, and the amount of silver added is 2 The amount is the calculation basis.) After aging for 3 hours, it is filtered, and the filtered material is calcined at 800°C for 25 minutes to prepare silver-loaded zirconium phosphate / nano-TiO 2 Compound antibacterial agent.

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PUM

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Abstract

The invention discloses a silver-loaded zirconium phosphate / nano-titanium dioxide composite antibacterial agent and a preparation method thereof, and the composite antibacterial agent consists of 70-95 parts of silver-loaded zirconium phosphate with the silver content of 0.5-3.5% and 5-30 parts of SiO2 modified nano-TiO2 with the silver content of 0.5-3.5%. The preparation method comprises the steps of firstly leading phosphate or phosphoric acid to be reacted with soluble zirconium salt for generating zirconium phosphate, washing the zirconium phosphate, then preparing 10-60% suspension, then adding silver nitrate into a system, aging for 2-36 hours, then adding titanium salt, further adding silicate ester or silica sol after completing the addition of the titanium salt, finally adding the silver nitrate, aging for 1-24 hours, then filtering, and carrying out high-temperature calcination for preparation. The composite antibacterial agent has excellent antibacterial performance, the compatibility between the antibacterial agent and a parent material is better, and the production method is simple and easy to control.

Description

Technical field [0001] The invention relates to the field of chemical engineering, in particular to an antibacterial agent, and also relates to a preparation method of the antibacterial agent. Background technique [0002] At present, the commonly used antibacterial agents mainly include organic antibacterial agents, inorganic ion-eluting antibacterial agents, and photocatalytic antibacterial agents. Organic antibacterial agents and inorganic ion-extractable antibacterial agents may cause some bacteria to develop drug resistance during long-term use, thereby reducing the antibacterial performance of the antibacterial agent and affecting its performance. The photocatalytic antibacterial agent achieves antibacterial properties through the strong oxidation of the photocatalytic reaction, which will not cause the bacteria to develop resistance, but it needs to have antibacterial properties in an environment with light, so its use is also subject to certain restrictions . At present...

Claims

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Application Information

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IPC IPC(8): A01N59/16A01N25/08A01P1/00
Inventor 陈前林隋岩峰郭妤杨三可解田杨丽萍
Owner WENGFU (GRP) CO LTD
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