Preparation method, material, application and product of a graphene oxide/silver nanocomposite hybrid antibacterial material
An antibacterial material and graphene technology, which is applied in the field of preparation of graphene oxide/silver nanocomposite hybrid antibacterial materials, can solve the problems of affecting antibacterial and antiviral functions, instability, and prone to agglomeration, so as to ensure fixed doping, Excellent antibacterial properties, excellent broad-spectrum effect
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Embodiment 1
[0042] Add 23ml of graphene oxide solution with a concentration of 6.5g / L into 127ml of deionized water, and continue stirring to disperse to obtain an aqueous solution of graphene oxide with a concentration of 1g / L. A sodium hydroxide solution with a mass fraction of 1% was prepared and added dropwise to the graphene oxide solution to gradually adjust the pH value from the initial acidity to a pH of 10. Subsequently, 3.5 mg of epichlorohydrin was added, and placed in a 50° C. water bath with stirring for 2 hours. The obtained product was washed three times with deionized water for later use. Configure 60ml of carbonate buffer, and disperse the above product in the buffer to obtain a pre-modified graphene oxide dispersion with a concentration of 2.5g / L. Take 50ml of the amino-terminated hyperbranched polymer aqueous solution with a concentration of 2g / L, add 25ml of silver nitrate solution with a concentration of 5mmol / L and stir, then transfer to the heating plate and heat t...
Embodiment 2
[0044] Add 23ml of graphene oxide solution with a concentration of 6.5g / L into 127ml of deionized water, and continue stirring to disperse to obtain an aqueous solution of graphene oxide with a concentration of 1g / L. A sodium hydroxide solution with a mass fraction of 1% was prepared and added dropwise to the graphene oxide solution to gradually adjust the pH value from the initial acidity to a pH of 10. Subsequently, 1.87 mg of epichlorohydrin was added, and heated and stirred in a 70°C water bath for 3 hours. The obtained product was washed three times with deionized water for later use. Configure 60ml of carbonate buffer, and disperse the above product in the buffer to obtain a pre-modified graphene oxide dispersion with a concentration of 2.5g / L. Take 50ml concentration again and be the amino group hyperbranched polymer aqueous solution of 0.5g / L, dropwise add 25ml concentration and be the silver nitrate solution of 1mmol / L and stir, then transfer to heating plate and be ...
Embodiment 3
[0046] Add 23ml of graphene oxide solution with a concentration of 6.5g / L into 127ml of deionized water, and continue stirring to disperse to obtain an aqueous solution of graphene oxide with a concentration of 1g / L. A sodium hydroxide solution with a mass fraction of 1% was prepared and added dropwise to the graphene oxide solution to gradually adjust the pH value from the initial acidity to a pH of 10. Subsequently, 5 mg of epichlorohydrin was added, and heated and stirred in a 60°C water bath for 4 hours. The obtained product was washed three times with deionized water for later use. Configure 60ml of carbonate buffer, and disperse the above product in the buffer to obtain a pre-modified graphene oxide dispersion with a concentration of 2.5g / L. Take 50ml of the amino-terminated hyperbranched polymer aqueous solution with a concentration of 5g / L, add 50ml of silver nitrate solution with a concentration of 50mmol / L and stir, then transfer to the heating plate and heat to boi...
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