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 a high-efficiency bactericide silver / graphite carbon nitride composite material, firstly using melamine to prepare graphite phase carbon nitride, then adding silver nitrate solution to the graphite phase carbon nitride dispersion, and placing the obtained mixed solution in a magnetic Stir on a stirrer for 2 hours, then irradiate for 2 hours under a 300W xenon lamp, and then separate, wash and dry the obtained suspension to obtain a silver / graphite phase carbon nitride composite material. The advantages and beneficial effects of the present invention are: compared with traditional fungicides, the Ag / g-C prepared by the present invention 3 N 4 There are no problems such as bactericidal by-products and bacterial resistance, and pure g-C 3 N 4 In contrast, it has a strong bactericidal ability under visible light irradiation, so it has a good application prospect.

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
CPCB01J27/24A01N59/16B01J35/004
Inventor 展思辉马双龙贾亚男周启星
Owner NANKAI UNIV
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