Preparation method of photo-thermal enhanced antibacterial biomass/graphene aerogel uranium adsorbent

A graphene aerogel and biomass technology, applied in the fields of chemistry and environment, can solve the problems of low hexavalent uranium enrichment rate, low mechanical strength, poor bacteriostatic ability and the like

Pending Publication Date: 2022-07-05
SHANDONG UNIV
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Problems solved by technology

[0007] In view of the deficiencies of the existing technology, especially the problems of low enrichment rate of hexavalent uranium, long adsorption time, low mechanical strength and poor anti

Method used

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  • Preparation method of photo-thermal enhanced antibacterial biomass/graphene aerogel uranium adsorbent
  • Preparation method of photo-thermal enhanced antibacterial biomass/graphene aerogel uranium adsorbent
  • Preparation method of photo-thermal enhanced antibacterial biomass/graphene aerogel uranium adsorbent

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[0011] In order to solve the above problems, the present invention is achieved through the following technical solutions:

[0012] A preparation method of a photothermal-enhanced antibacterial biomass / graphene aerogel uranium adsorbent, comprising the following steps:

[0013] 1) cleaning the antibacterial biomass, drying, then pulverizing and sieving to obtain the antibacterial biomass powder;

[0014] 2) ultrasonically mixing graphite oxide powder with deionized water to obtain graphene oxide aqueous solution, add amidoximized diaminomaleonitrile and antibacterial biomass powder in the graphene oxide aqueous solution, after stirring, at 70 ℃. The hydrothermal reaction is carried out at ~200 °C for 6 to 24 hours, and the obtained product is immersed in a water / ethanol solution and then freeze-dried to obtain a photothermal-enhanced antibacterial biomass / graphene aerogel uranium adsorbent.

[0015] Preferably according to the present invention, in step 1), the bacteriostatic ...

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Abstract

The invention relates to a preparation method of a photo-thermal enhanced antibacterial biomass/graphene aerogel uranium adsorbent, which is characterized in that graphene oxide, antibacterial biomass and amidoximated diaminomaleonitrile are used as raw materials, and the photo-thermal enhanced antibacterial biomass/graphene aerogel uranium adsorbent is prepared by a hydrothermal one-step synthesis method. The prepared uranium adsorbent has high mechanical strength, high photo-thermal conversion capacity and high antibacterial and anti-pollution performance, has unique and excellent adsorption performance on hexavalent uranium, is good in material stability and high in repeated utilization rate, and still has high adsorption performance after 10 times of cyclic regeneration.

Description

technical field [0001] The invention relates to a preparation method of a photothermal-enhanced antibacterial biomass / graphene aerogel uranium adsorbent, belonging to the technical fields of chemistry and environment. Background technique [0002] Uranium has received extensive attention as an important raw material for the nuclear industry. The energy released by the fission of 1 kilogram of uranium nuclei is approximately equal to the chemical energy released when 2,700 tons of standard coal is burned. With the gradual development of the nuclear industry, the demand for uranium has also maintained steady growth. The uranium reserves in seawater are rich, about 4.5 billion tons, which is equivalent to a thousand times the reserves of land uranium mines. If it can be extracted economically and effectively, it will be an important supplement and guarantee for the stable development of nuclear power and nuclear power. However, the concentration of uranium in seawater is very...

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Application Information

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IPC IPC(8): B01J20/24B01J20/30B01J20/28A01N65/20A01N65/08A01P3/00A01P1/00C02F1/28C02F1/50G21F9/12C02F101/00
CPCB01J20/20B01J20/24B01J20/22B01J20/28047A01N65/20A01N65/08C02F1/283C02F1/285C02F1/50G21F9/12B01J2220/4806B01J2220/4812B01J2220/4825C02F2101/006
Inventor 王志宁李楠张娜
Owner SHANDONG UNIV
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