A kind of silver-loaded graphene material and preparation method thereof
A graphene and graphene fiber technology, applied in the field of medical materials, can solve the problems of high irritation, toxicity, antibacterial agents and antibiotics that cannot meet the requirements of sterilization, and achieve the effect of simple operation and good antibacterial effect
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[0026] The invention provides a kind of preparation method of silver-loaded graphene material, comprises the following steps:
[0027] Impregnation step: immersing the graphene fiber in a silver salt solution; in the silver salt solution, the concentration of silver ions is 0.1-0.5g / kg;
[0028] Rolling step: take out the graphene fiber, place it on an inclined plane, and roll it with a glass rod;
[0029] Drying step: place the graphene fiber on a tray and dry it at 80-140° C. to obtain a silver-loaded graphene material.
[0030] The method utilizes the effect of hydroxyl groups and carboxyl groups on the layered structure of the graphene fibers and silver ions to distribute the silver ions on the graphene fibers, thereby activating the silver ions to form a silver-loaded graphene material with better disinfection and sterilization effects.
Embodiment 1
[0032] At room temperature, spread graphene fibers with a size of 40×30 cm on a tray, and add 500 mL of silver nitrate solution with a concentration of 0.2 g / kg. After soaking for 3 minutes, take out the fiber and place it on a 45° slope, then gently roll it back and forth twice with a glass rod, place the rolled fiber in a tray, dry it in vacuum at 120°C for 30 minutes, and finally cut it to get the load Silver graphene fiber material. The scanning electron microscope picture of embodiment 1 is as figure 1 shown.
Embodiment 2
[0034] At room temperature, spread three sheets of graphene fibers with a size of 40×20 cm on a tray, and add 1000 mL of silver nitrate solution with a concentration of 0.2 g / kg. After soaking for 3 minutes, take out the fiber and place it on a 30° slope, then gently roll it twice with a glass rod, place the rolled fiber in a tray, dry it at 80°C for 2 hours, and finally cut it to get the load Silver graphene fiber material.
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