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High-valent silver oxide-loaded cyclodextrin polymeric microspheres and preparation method thereof

A technology of high silver oxide and polymeric microspheres, which is applied in chemical instruments and methods, botanical equipment and methods, alkali metal compounds, etc., can solve the problems of increasing cost and process, and achieve high-efficiency bactericidal effect and excellent sustained release , good adsorption effect

Inactive Publication Date: 2019-10-18
苏州火睿新材料科技有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is necessary to further treat the water body, it needs to increase the process and increase the cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This example provides a kind of cyclodextrin polymerized microspheres loaded with silver oxide, which is prepared by the following method:

[0025] a. Weigh 1g of potassium hydroxide, 1.4g of sodium persulfate, 0.5g of polyvinyl alcohol, 1.5g of α-cyclodextrin and 90g of distilled water, add them to the reaction kettle respectively, control the temperature at 70°C, stir and dissolve to obtain E solution ;

[0026] Weigh 0.8g of silver nitrate and 0.6g of sodium persulfate and dissolve them in 10g of distilled water, stir to make them fully dissolve, and obtain F solution;

[0027] Slowly add solution F to solution E dropwise, and continue to stir for 12 hours at a constant temperature of 70°C under nitrogen protection to obtain a suspension, which is then centrifuged. After filtering, the filtrate was washed with ethanol and distilled water several times until the pH became neutral, and dried in vacuum to obtain high-silver oxide composite nanoparticles.

[0028] b. W...

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PUM

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Abstract

The invention discloses high-valent silver-oxide-loaded cyclodextrin polymeric microspheres and a preparation method thereof. Cyclodextrin microspheres are used as base spheres and are filled with high-valent silver oxide composite nanoparticles; under the alkaline condition, an inorganic soluble silver salt serves as a silver source, cyclodextrin and polyvinyl alcohol serve as dispersing agents,and silver ions react for synthesizing high-valent silver oxide nano-particles through a strong oxidizing agent; then epoxy chloropropane is taken as a cross-linking agent and beta-cyclodextrin is taken as a monomer, the high-valent silver oxide nanoparticles are doped, and cyclodextrin polymeric microspheres coated with high-valent silver oxide are synthesized by taking kerosene as an oil phase.The cyclodextrin polymeric microspheres disclosed by the invention are large in specific surface area and good in adsorption effect. Meanwhile, the high-valent silver oxide nanoparticles are protectedby the cyclodextrin polymeric microspheres, so that an excellent slow release property is achieved, and the long-acting property is well reflected while the efficient sterilization effect is achieved. The preparation method of the high-valent silver-oxide-loaded cyclodextrin polymeric microspheres provided by the invention only needs two synchronous processes, the process is simple and is easy torepeat, and the method is suitable for mass production.

Description

technical field [0001] The invention relates to a cyclodextrin polymerized microsphere loaded with silver oxide and a preparation method thereof, belonging to the technical field of water environment protection. Background technique [0002] In recent years, environmental pollution, especially water pollution, has attracted increasing attention. Water pollution is caused by harmful chemicals that reduce or lose the use value of water and pollute the environment. Acids, alkalis, oxidants, and compounds such as copper, cadmium, mercury, and arsenic in sewage, organic poisons such as benzene, dichloroethane, and ethylene glycol, will kill aquatic organisms and affect drinking water sources and scenic spots. Contaminated water may also contain large numbers of fungi that are harmful to living organisms. When the organic matter in the sewage is decomposed by microorganisms, the oxygen in the water is consumed, which affects the life of aquatic organisms. After the dissolved oxyg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28C02F1/28C02F1/50B01J20/30A01N59/00A01N43/16A01P3/00A01P1/00
CPCA01N43/16A01N59/00B01J20/06B01J20/24B01J20/28019C02F1/281C02F1/286C02F1/288C02F1/50
Inventor 刘宝刚王永向吴勇飞潘士兵刘伟伟李明王志华
Owner 苏州火睿新材料科技有限公司
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