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Method for preparing efficient bactericide silver/graphite phase carbon nitride composite material

A technology of graphite phase carbon nitride and composite materials, applied in chemical instruments and methods, botanical equipment and methods, biocides, etc., can solve the problem that the bactericidal effect needs to be improved, and achieve the effect of strong bactericidal ability and good application prospects.

Inactive Publication Date: 2016-06-15
NANKAI UNIV
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Problems solved by technology

Although g-C 3 N 4 Shows a certain degree of photocatalytic bactericidal performance, but its bactericidal effect still needs to be improved

Method used

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  • Method for preparing efficient bactericide silver/graphite phase carbon nitride composite material
  • Method for preparing efficient bactericide silver/graphite phase carbon nitride composite material
  • Method for preparing efficient bactericide silver/graphite phase carbon nitride composite material

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Embodiment

[0024] A preparation method of high-efficiency bactericide silver / graphite phase carbon nitride composite material, the steps are as follows:

[0025] (1) Graphite phase carbon nitride (g-C 3 N 4 ) preparation

[0026] 1) Transfer melamine into a crucible with a lid, raise the temperature to 550°C at a heating rate of 2.3°C / min, and keep it for 4h. After cooling to room temperature, grind the obtained yellow powder in an agate mortar, and the obtained product is poly layer g-c 3 N 4 ;

[0027] 2) The above 1.5g multi-layer g-C 3 N 4 Add 450 mL of ethanol aqueous solution to obtain a mixed solution. The volume ratio of absolute ethanol and deionized water in the ethanol aqueous solution is 3:1. The above mixed solution is ultrasonicated for 10 h, and then the obtained yellow suspension is centrifuged at 3000 r / min for 10 min to remove untreated stripped g-C 3 N 4Granules, and then centrifuge the obtained milky white suspension at 10000r / min for 5min, and dry the obtain...

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Abstract

A method for preparing an efficient bactericide silver / graphite phase carbon nitride composite material includes the steps that firstly, graphite phase carbon nitride is prepared with melamine; then a silver nitrate solution is added into a graphite phase carbon nitride dispersion solution, and an obtained mixed solution is placed on a magnetic stirrer to be stirred for 2 h and then irradiated under a 300 W xenon lamp for 2 h; then an obtained suspension is separated, washed and dried, and the silver / graphite phase carbon nitride composite material is prepared. The method has the advantages that compared with a traditional bactericide, the prepared Ag / g-C3N4 has no bactericidal side products, bacterial drug resistance or other problems; compared with pure g-C3N4, the composite material has high bactericidal capacity under irradiation of visible light, and accordingly the composite material has good application prospects.

Description

technical field [0001] The invention relates to the preparation technology of visible light photocatalytic bactericidal nanometer material, in particular to a preparation method of high-efficiency bactericide silver / graphite phase carbon nitride composite material. Background technique [0002] Microbial contamination is a threat that has existed since the dawn of human society. Many types of microorganisms can cause serious infections and even death in humans. Therefore, it is necessary to develop high-efficiency, low-cost and environmentally friendly fungicides. Platinum-doped TiO since 1985 2 Since the bactericidal ability was first reported, photocatalytic sterilization has attracted widespread attention and is considered as a promising bactericidal process. Chlorine disinfection can produce disinfection by-products, and some species of bacteria such as Mycobacterium avium cannot be killed by chlorine, so it is not an environmentally friendly and sustainable disinfect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24A01N59/16A01P1/00
CPCA01N59/16B01J27/24B01J35/39
Inventor 展思辉马双龙贾亚男周启星
Owner NANKAI UNIV
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