Copper nanoparticle-loaded polydopamine-modified flaky MoS2 nano antibacterial agent as well as preparation method and application of copper nanoparticle-loaded polydopamine-modified flaky MoS2 nano antibacterial agent
A nano antibacterial agent, polydopamine technology, applied in the field of antibacterial materials, can solve the problems of polluted environment, short life, poor thermal stability, etc., and achieve the effect of excellent antibacterial performance and improving antibacterial performance.
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Embodiment 1
[0047] Step 1. Weigh 1 g of ammonium molybdate and thiourea according to the atomic-to-substance ratio of 3:7 and disperse it into 220 ml of deionized water, and stir it on a magnetic stirrer until dissolved, and place the mixed solution in an ultrasonic cleaner for 30 minutes. Disperse to obtain a transparent solution;
[0048] Step 2. Transfer the transparent solution prepared in step 1 to a polytetrafluoroethylene liner with a filling ratio of 60%, put it in a hydrothermal kettle and react in an oven at 220°C for 24 hours. After the reaction, separate the precipitate for use 6000rpm alcohol and water alternately centrifuged and washed 5 times to obtain MoS 2 For nanosheets, the obtained samples were dried in an oven at 50°C, and stored in sample bags for later use;
[0049] Step 3: Disperse 0.605g of Tris in 50ml of deionized water to make a Tirs buffer solution, use concentrated hydrochloric acid to adjust pH=8.5; take the obtained MoS at a mass ratio of 1:0.8 2 A total ...
Embodiment 2
[0055] Step 1. Weigh 1.2 g of sodium molybdate and L-cysteine according to the atomic-matter ratio of 3:7 and disperse them into 240 ml of deionized water, stir on a magnetic stirrer until dissolved, and place the mixed solution in ultrasonic Ultrasonic disperse for 25min in the cleaner to obtain a transparent solution;
[0056] Step 2. Transfer the transparent solution prepared in step 1 to a polytetrafluoroethylene lining with a filling ratio of 50%, put it in a hydrothermal kettle and react in an oven at 180°C for 22 hours. After the reaction, separate the precipitate for use 7000rpm alcohol and water alternately centrifuged and washed 5 times to obtain MoS 2 For nanosheets, the obtained samples were dried in an oven at 50°C, and stored in sample bags for later use;
[0057] Step 3: Disperse 0.605g of Tris in 50ml of deionized water to make a Tirs buffer solution, use concentrated hydrochloric acid to adjust the pH to 8.5; take the obtained MoS at a mass ratio of 1:1 2 ...
Embodiment 3
[0063] Step 1. Weigh 1.1 g of sodium molybdate and sodium sulfide according to the ratio of atomic substance to 3:7, and disperse them into 230 ml of deionized water, and stir on a magnetic stirrer until dissolved, and place the mixed solution in an ultrasonic cleaner for ultrasonication 40min dispersed to obtain a transparent solution;
[0064] Step 2. Transfer the transparent solution prepared in step 1 to a polytetrafluoroethylene lining with a filling ratio of 65%, put it in a hydrothermal kettle and react in an oven at 200°C for 20 hours. After the reaction, separate the precipitate for use 8000rpm alcohol and water alternately centrifuged and washed 5 times to obtain MoS 2 For nanosheets, the obtained samples were dried in an oven at 50°C, and stored in sample bags for later use;
[0065] Step 3: Disperse 0.605g of Tris in 50ml of deionized water to make a Tirs buffer solution, use concentrated hydrochloric acid to adjust the pH to 8.5; take the obtained MoS at a mass r...
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