Copper-cobalt-sulfur nano-enzyme material as well as preparation method and antibacterial application thereof
A technology of nanozyme and copper cobalt sulfur, which is applied in the field of nanozyme, can solve the problems of limited application and low catalytic activity, and achieve the effects of good biocompatibility, good dispersion and stable properties
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Embodiment 1
[0032] The preparation of embodiment 1 copper-cobalt-sulfur nanozyme:
[0033] Dissolve 0.5 g of dextran (molecular weight: 500,000) in 30 mL of ultrapure water, and stir magnetically for 30 minutes to fully dissolve the dextran. Then add 0.25mmol of CuCl 2 .2H 2 O, 0.5 mmol CoCl 2 .6H 2 O, and 1.5mmol thiourea, magnetically stirred for 30 minutes to obtain a mixed solution. Then slowly add 100 μL of ethylenediamine dropwise, stir and mix thoroughly to obtain a reaction solution. The reaction solution was poured into a 50 ml polytetrafluoroethylene reactor, transferred to an oven, and reacted at 160° C. for 20 hours. After the reaction product was naturally cooled to room temperature, it was centrifuged, washed three times with water and ethanol, and freeze-dried in vacuum to finally obtain 150 mg of black copper-cobalt-sulfur nano-powder with a yield of 54.4%. XRD analysis showed that the obtained product was copper cobalt sulfur (CuCo 2 S 4 )(See image 3 ), with a ...
Embodiment 2
[0034] Preparation of embodiment 2 copper-cobalt-sulfur nanozyme:
[0035] Dissolve 0.5 g of dextran (molecular weight: 70,000) in 30 mL of ultrapure water, and stir magnetically for 30 minutes to fully dissolve the dextran. Then add 0.25mmol of CuCl 2 .2H 2 O, 0.5 mmol CoCl 2 .6H 2 O, and 1.5mmol thiourea, magnetically stirred for 30 minutes to obtain a mixed solution. Then slowly add 100 μL of ethylenediamine dropwise, stir and mix thoroughly to obtain a reaction solution. The reaction solution was poured into a 50 ml polytetrafluoroethylene reactor, transferred to an oven, and reacted at 160° C. for 20 hours. After the reaction product is naturally cooled to room temperature, it is centrifuged, washed three times with water and ethanol, and freeze-dried in a vacuum to finally obtain copper-cobalt-sulfur nanoparticles.
Embodiment 3
[0036] Preparation of embodiment 3 copper-cobalt-sulfur nanozyme:
[0037] Dissolve 0.5 g of dextran (molecular weight: 10,000) in 30 mL of ultrapure water, and stir magnetically for 30 minutes to fully dissolve the dextran. Then add 0.25mmol of CuCl 2 .2H 2 O, 0.5 mmol CoCl 2 .6H 2 O, and 1.5mmol thiourea, magnetically stirred for 30 minutes to obtain a mixed solution. Then slowly add 100 μL of ethylenediamine dropwise, stir and mix thoroughly to obtain a reaction solution. The reaction solution was poured into a 50 ml polytetrafluoroethylene reactor, transferred to an oven, and reacted at 160° C. for 20 hours. After the reaction product is naturally cooled to room temperature, it is centrifuged, washed three times with water and ethanol, and freeze-dried in a vacuum to finally obtain copper-cobalt-sulfur nanoparticles.
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