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Zeolite base composite antibiotic material and its preparation method

A compound antibacterial and zeolite technology, applied in botany equipment and methods, chemicals for biological control, animal repellent, etc., can solve the problem of losing the ability to kill germs, slow metal leakage, loss of function, etc. problems, to achieve the effect of being suitable for large-scale production, preventing slow seepage, and enhancing force

Inactive Publication Date: 2008-04-30
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned antibacterial materials have many superior properties, but there are some defects: once the metal ion-containing zeolite kills microorganisms, the microorganisms will be adsorbed on the surface of the zeolite, and the zeolite containing metal ions will lose the ability to kill germs; Light excitation can exert antibacterial ability
However, the interaction between nano-titanium dioxide and metal ions is weak, so it is difficult to load silver on nano-titanium dioxide, and as time goes by, the metal will slowly seep out and lose, and lose its original function; the same nano-titanium dioxide loaded with silver Antibacterial agents also have problems such as difficult preparation and high prices

Method used

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  • Zeolite base composite antibiotic material and its preparation method
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Examples

Experimental program
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Effect test

Embodiment 1

[0061] Use NaY(FAU) zeolite molecular sieve with a silicon-aluminum ratio (Si / Al) of 2.3 to pre-fire at 500°C for 3 hours, fully dehydrate, cool to room temperature, and then adsorb triethylamine (organic amine) to saturation on the dehydrated zeolite molecular sieve The state is preprocessed.

[0062] Weigh 0.5g of TiCl 3 Put it in a magnetic boat, add 3ml of deionized water, impregnate 1g of NaY zeolite molecular sieve that has adsorbed organic amine to saturation, stir evenly, heat at 100°C, evaporate the water, put the magnetic boat into the muffle furnace, Roast at 500°C for 2 hours, and when the sample drops to room temperature, take out the sample and put CuSO at a concentration of 0.1mol / L 4 Exchange for 48 hours, centrifuge, wash the separated solid sample with distilled water until there is no copper ion in the eluate, put it in an oven to dry, and obtain the product, which is recorded as TiO 2 -CuY. The product is characterized by X-ray diffraction and transmissi...

Embodiment 2

[0065] EFR zeolite molecular sieve with a silicon-aluminum ratio (Si / Al) of 7 was pre-fired at 500°C for 3 hours, fully dehydrated, cooled to room temperature, and then dehydrated zeolite molecular sieve adsorbed n-butylamine (organic amine) to a saturated state for pre-calcination deal with.

[0066] Weigh 0.4g of TiCl 3 Put it in a magnetic boat, add 2ml of deionized water, impregnate 1g of EFR zeolite molecular sieve that has absorbed organic amine to saturation, stir evenly, heat at 100°C, evaporate the water, put the magnetic boat into the muffle furnace, Calcined at 500°C for 2 hours, when the sample dropped to room temperature, the sample was taken out, and the concentration was 0.1mol / LAgNO 3 Exchange for 48 hours, centrifuge, wash the separated solid sample with distilled water until there is no silver ion in the eluate, put it in an oven to dry, and obtain the product, which is recorded as TiO 2 -AgEFR. X-ray diffraction and transmission electron microscope tests ...

Embodiment 3

[0068] TON zeolite molecular sieve with a silicon-aluminum ratio (Si / Al) of 10 was pre-fired at 500°C for 3 hours, fully dehydrated, cooled to room temperature, and then dehydrated zeolite molecular sieve adsorbed propylamine (organic amine) to a saturated state for pretreatment.

[0069] Weigh 0.4g of TiCl 4 Place in a magnetic boat, add 2ml of absolute ethanol, stir to dissolve, add 2ml of deionized water, impregnate 1g of TON zeolite molecular sieve that has absorbed organic amine to saturation, stir evenly, heat at 100°C, evaporate to dryness, Put the magnetic boat into the muffle furnace and bake it at 500°C for 5 hours. When the sample drops to room temperature, take the sample out and put it in a concentration of 0.1mol / L ZnSO 4 Exchange for 48 hours, centrifuge, wash the separated solid sample with distilled water until there is no zinc ion in the eluate, put it in an oven to dry, and obtain the product, which is recorded as TiO 2 -ZnTON. Characterization by X-ray di...

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Abstract

The invention relates to zeolite-based composite antibiotic material and a process for preparation, the material of which is low-silicon-aluminum-ratio zeolite molecular sieve which is used as the base and carrier, the outer surface of the invention is covered with nanometer titanium dioxide particles, and the pore passages or cages of the invention are provided with metallic ions which have antibiotic effect. The process for preparing the material is that low-silicon-aluminum-ratio zeolite molecular sieve absorbs organic amine to saturation and then is dipped into soluble titanates for roasting to generate nanometer titanium dioxide on the outer surface of zeolite, and metallic ions such as silver ions, copper ions and the like which have antibiotic effect are exchanged to zeolite by the ion exchange process to form the novel composite antibiotic material. The composite antibiotic material not only has the antibiotic effect of metallic ions but also has the antibiotic effect of nanometer titanium dioxide, and thereby the antibiotic effect is strengthened. The composite antibiotic material is easy to prepare, low in price and suitable for industrial production.

Description

technical field [0001] The invention relates to the field of functional new materials, in particular to a zeolite-based composite antibacterial material and a preparation method thereof. The invention uses zeolite molecular sieve as the base to generate nano-titanium dioxide on the outer surface of zeolite, thereby forming a new material with photocatalysis and ion exchange functions, and then through ion exchange method, silver, copper and other metal ions with antibacterial effect are exchanged to zeolite In this way, a new type of composite antibacterial material is formed, which not only has the antibacterial effect of metal ions, but also has the antibacterial effect of nano-titanium dioxide, which strengthens the antibacterial effect. Background technique [0002] With the continuous improvement of people's living standards, people have begun to develop functional products that can inhibit the reproduction of microorganisms or kill bacteria. Among them, inorganic anti...

Claims

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Application Information

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IPC IPC(8): A01N25/08A01P1/00
Inventor 徐孝文杨静
Owner SUZHOU UNIV OF SCI & TECH
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