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Preparation method for silver/titanium dioxide/graphene oxide aerogel bactericide

A technology of graphene airgel and titanium dioxide, which is applied in the direction of botanical equipment and methods, biocides, disinfectants, etc., can solve the problems of poor sterilization effect and difficult separation, and achieve enhanced killing ability, mild reaction conditions, good The effect of applying the foreground

Inactive Publication Date: 2019-09-13
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, current fungicides generally have problems such as poor bactericidal effect and difficulty in separation, so it is still necessary to develop new fungicides that are more efficient and easy to separate

Method used

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  • Preparation method for silver/titanium dioxide/graphene oxide aerogel bactericide
  • Preparation method for silver/titanium dioxide/graphene oxide aerogel bactericide
  • Preparation method for silver/titanium dioxide/graphene oxide aerogel bactericide

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Embodiment 1

[0025] (1) Add 1 g of graphite powder to 21 ml of concentrated sulfuric acid and stir evenly, then add 0.5 g of anhydrous sodium nitrate, place the above mixture in an ice bath at 0°C, and slowly add 4 g of KMnO under vigorous stirring 4 , keep the temperature not exceeding 20°C, and react for 30 minutes;

[0026] (2) Slowly raise the temperature of the reaction system to 35°C and keep it for 60 minutes, during which the solution turns brown;

[0027] (3) Add 40ml of deionized water into the above reaction system, keep the temperature not higher than 98°C for 15min, during which the solution turns brown;

[0028] (4) Add 140 milliliters of deionized water to the above-mentioned reaction system, 10 milliliters of mass percent concentrations are 30% H 2 o 2 , the color becomes bright yellow at this time;

[0029] (5) After the solution is cooled, it is centrifuged at 10,000 rpm for ten minutes, washed three times with deionized water and twice with absolute ethanol, and then ...

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Abstract

The invention discloses a preparation method for a high-efficiency bactericide, i.e., silver / titanium dioxide / graphene oxide composite material. The preparation method comprises the following steps: treating graphene to form graphene oxide at first, and then loading silver and titanium dioxide to form the final product. The preparation method has simple process; and the prepared composite materialhas no sterilization by-products, bacterial resistance and other problems, and has stronger bactericidal ability under visible light irradiation compared with pure titanium dioxide, so the compositematerial has good application prospects.

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to a method for preparing a high-efficiency bactericide silver / titanium dioxide / graphene oxide composite material. The preparation method has a simple process, and the prepared composite material has no problems such as bactericidal by-products and bacterial drug resistance. Compared with pure titanium dioxide, it has stronger bactericidal ability under visible light irradiation, so it has a good application prospect. Background technique [0002] Microbial pollution has been threatening human health since the birth of human society. There are a variety of microorganisms in the environment that can cause serious illness and death in humans. At present, a wide variety of antibacterial substances such as silver and antibiotics are widely used in bactericidal applications, but the properties of silver precious metals and the spread and contamination of resistance genes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N59/16A01N59/00A01P1/00
CPCA01N25/04A01N59/00A01N59/16
Inventor 展思辉周芷若秘雪岳李轶张贺孙妍
Owner NANKAI UNIV