Technology for preparing surface-coated modified Ag/ZnO nano composite antibacterial agent
A nano-composite, surface-coated technology, applied in the field of antibacterial materials, can solve the problems of weak photocatalytic ability, application limitations, and ZnO photocatalytic antibacterial ability cannot be reflected.
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Embodiment 1
[0026] A process for preparing a surface-coated and modified Ag / ZnO nano composite antibacterial agent includes the following steps:
[0027] 1) Add dispersant sodium hexametaphosphate to distilled water, the mass ratio of distilled water to dispersant is 500:1, stir until completely dissolved;
[0028] 2). Add nano-ZnO powder to the solution of step 1), the mass ratio of distilled water and nano-ZnO powder is 60:1, then first use ultrasonic dispersion for 30 minutes, then add AgNO 3 , Nano ZnO powder and AgNO 3 The mass ratio of the solution is 20:1, adjust the pH value of the solution to 7, and mechanically stir in a water bath at 25℃ for 1h;
[0029] 3) Wash, filter, and then dry in a constant temperature drying oven at 80°C for 3 hours;
[0030] 4) Put it into a box-type resistance furnace and bake at 600℃ for 2h;
[0031] 5) Take out the original powder of Ag / ZnO nanocomposite antibacterial agent, add the original Ag / ZnO antibacterial agent powder in distilled water, and then add s...
Embodiment 2
[0033] A process for preparing a surface-coated and modified Ag / ZnO nano composite antibacterial agent, comprising the following steps:
[0034] 1) Add dispersant sodium hexametaphosphate to distilled water, the mass ratio of distilled water and dispersant is 500:1, stir until completely dissolved;
[0035] 2). Add nano-ZnO powder to the solution of step 1), the mass ratio of distilled water and nano-ZnO powder is 60:1, then first use ultrasonic dispersion for 30 minutes, then add AgNO 3 , Nano ZnO powder and AgNO 3 The mass ratio of the solution is 20:1, adjust the pH value of the solution to 8, and mechanically stir for 2h in a 40℃ water bath;
[0036] 3) Wash, filter, and then dry in a constant temperature drying oven at 120°C for 4 hours;
[0037] 4) Put it into a box-type resistance furnace and roast at 800℃ for 4h;
[0038] 5) Take out the original powder of Ag / ZnO nanocomposite antibacterial agent, add the original Ag / ZnO antibacterial agent powder in distilled water, and then ad...
Embodiment 3
[0040] A process for preparing a surface-coated and modified Ag / ZnO nano composite antibacterial agent includes the following steps:
[0041] 1) Add dispersant sodium hexametaphosphate to distilled water, the mass ratio of distilled water and dispersant is 500:1, stir until completely dissolved;
[0042] 2). Add nano-ZnO powder to the solution of step 1), the mass ratio of distilled water and nano-ZnO powder is 60:1, then first use ultrasonic dispersion for 30 minutes, then add AgNO 3 , Nano ZnO powder and AgNO 3 The mass ratio is 20:1, adjust the pH value of the solution to 7.5, and mechanically stir for 1.5h in a 35℃ water bath;
[0043] 3) Wash, filter, and then dry in a constant temperature drying oven at 100°C for 3.5h;
[0044] 4) Put it into a box-type resistance furnace and bake it at 700℃ for 3h;
[0045] 5) Take out the original powder of Ag / ZnO nanocomposite antibacterial agent, add the original Ag / ZnO antibacterial agent powder in distilled water, and then add sodium laurate...
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