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Method for preparing aqueous dispersion nano-cuprous oxide/graphene composite powder

A nano-cuprous oxide and graphene composite technology, applied in the oxidation water/sewage treatment, medical preparations containing active ingredients, light water/sewage treatment, etc., to achieve low production equipment requirements, excellent photocatalytic degradation of dyes, Good dispersion effect

Inactive Publication Date: 2012-10-10
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no report on the preparation of the above-mentioned water-dispersed cuprous oxide / graphene composite powder

Method used

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  • Method for preparing aqueous dispersion nano-cuprous oxide/graphene composite powder
  • Method for preparing aqueous dispersion nano-cuprous oxide/graphene composite powder
  • Method for preparing aqueous dispersion nano-cuprous oxide/graphene composite powder

Examples

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Embodiment 1

[0027] At room temperature, weigh 100 mg of graphite oxide, 1 g of sodium polystyrene sulfonate, and 1 g of anhydrous copper nitrate into a beaker, then add 100 mL of deionized water, and ultrasonically disperse at a power of 300 W for 45 minutes. After the dispersion is uniform, dropwise add 0.1 mL hydrazine hydrate solution (mass concentration 80%), then pour the above reaction solution into a three-necked flask, be warming up to 100°C, and react for 10h. After the reaction, the Cu was collected by suction filtration 2 The O / graphene composite powder was washed with deionized water, and then the product was dried at 60°C for 18h. figure 1 From the field emission scanning electron microscope photograph of the powder synthesized in this example, it can be seen that the cuprous oxide nanoparticles are uniformly attached to the graphene surface. figure 2 From the photo of the dispersion effect of the synthetic powder in this example in water, it can be seen that the powder has...

Embodiment 2

[0029] At room temperature, weigh 80 mg of graphite oxide, 400 mg of sodium dodecyl benzene sulfonate, and 400 mg of anhydrous copper nitrate into a beaker, then add 160 mL of deionized water, and ultrasonically disperse at a power of 200 W for 60 min. Add 128 μL of hydrazine hydrate solution (mass concentration 50%), pour the above reaction solution into a three-necked flask, heat up to 90 ° C, and react for 12 h. After the reaction, the Cu was collected by suction filtration 2 O / graphene composite powder was washed with deionized water, and then the product was dried at 40°C for 24h. The cuprous oxide in the product is well combined with graphene; it has good dispersibility in water; it has good visible light catalytic degradation of cationic dyes and anti-tumor cell effects.

Embodiment 3

[0031] At room temperature, weigh 150 mg of graphite oxide, 1.2 g of sodium dodecyl sulfate, and 300 mg of anhydrous copper nitrate into a beaker, then add 100 mL of deionized water, and ultrasonically disperse at a power of 400 W for 30 minutes. After the dispersion is uniform, dropwise add 0.05mL hydrazine hydrate solution (mass concentration 30%), then pour the above reaction solution into the three-necked flask, be warming up to 110°C, and react for 8h. After the reaction, the Cu was collected by suction filtration 2 O / graphene composite powder was washed with deionized water, and then the product was dried at 80°C for 12h. The cuprous oxide in the product is well combined with graphene; it has good dispersibility in water; it has good visible light catalytic degradation of cationic dyes and anti-tumor cell effects.

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Abstract

The invention relates to a method for preparing aqueous dispersion nano-cuprous oxide / graphene composite powder. The method includes (1) ultrasonically dispersing graphite oxide, surfactant and copper salt in water at room temperature to form reaction liquid; and (2) dripping hydrated hydrazine liquor of a reducing agent into the reaction liquid at the room temperature, heating so that the temperature of the mixed liquid ranges from 90 DEG C to 110 DEG C, carrying out reaction for 8 to 12 hours, cooling the mixed liquid to the room temperature, leaching and collecting a product, and washing and drying the product to obtain the Cu2O / graphene composite powder. The method is simple, requirements on equipment are low, and industrial production is realized easily. The prepared composite powder is good in dispersibility in water, is excellent in photocatalytic dye degradation ability in visible light with the wavelength of 500nm, and is good in photocatalytic tumor cell killing ability, and has a wide application prospect in the field of environmental protection and tumor therapy.

Description

technical field [0001] The invention belongs to the field of preparation of nano-visible light catalytic materials, in particular to a preparation method of a water-dispersed nano-cuprous oxide / graphene composite powder. Background technique [0002] Cuprous oxide is a p-type semiconductor material responsive to visible light, with a forbidden band width of about 2.0 eV and a high absorption coefficient in the visible light region, making it an ideal visible light catalytic material. Under visible light irradiation, cuprous oxide can degrade organic pollutants to achieve the purpose of environmental purification; and can interact with the cell wall of bacteria, and further damage the membrane structure, resulting in changes in permeability, so as to achieve bacteriostatic, anti-cancer effects. It can be seen that cuprous oxide has broad application prospects in environmental protection, biomedicine and so on. However, compared with other commonly used n-type semiconductor c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72C02F1/30C02F1/72A61K41/00A61P35/00C02F103/30
Inventor 李耀刚曹颖慧侯成义王宏志张青红
Owner DONGHUA UNIV
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