Preparation method of zinc oxide-metal organic framework composite antibacterial material
A technology of metal-organic frameworks and composite materials, which is applied in the field of preparation of zinc oxide-metal-organic framework composite antibacterial materials, can solve problems such as easy agglomeration and affecting antibacterial performance, and achieve orderly and uniform pores, high-efficiency antibacterial effect, and high ratio The effect of surface area
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Embodiment 1
[0020] A zinc oxide-metal organic framework composite antibacterial material, using lanthanide MOFs with good biological properties and easy preparation as the framework material; MOFs-Ln is made of thiol diacetic acid (TDA) and lanthanide nitrate, and is stripped in two steps , Adjust the particle size and porosity of MOFs-Ln to obtain different sizes of MOFs structure; then, in-situ growth is used to grow ZnO NPs on the surface and pores of MOFs-Ln using zinc nitrate, sodium hydroxide and sodium chloride , Get the ZnONPs@MOFs-Ln material with good antibacterial properties, and prepare it according to the following steps:
[0021] (1) Preparation of MOFs-Ln:
[0022] 1) Synthesis: Take 0.4 mmol TDA and 0.2 mmol lanthanide nitrate La(NO 3 ) 3 Dissolve in 40 mL of 60 mmol sodium hydroxide (Na OH) solution, mix well, transfer to a 50 mL reactor, react at 150 ℃ for 24 hours, after the reaction, filter off the supernatant, and use CH for precipitation 3 CH 2 -OH cleaned three times and...
Embodiment 2
[0028] A zinc oxide-metal organic framework composite antibacterial material, similar to Example 1, is prepared according to the following steps:
[0029] (1) Preparation of MOFs-Ln:
[0030] 1) Synthesis: Take 0.8mmol TDA and 0.4mmol lanthanide nitrate Nd(NO 3 ) 3 Dissolve in 40 mL 70 mmol Na OH solution, mix well, transfer to a 50 mL reactor, react at 140 ℃ for 24 hours, after the reaction, filter off the supernatant, and use CH for precipitation 3 CH 2 -OH cleaned three times and dried at 60 ℃ to obtain MOFs-Ln for use;
[0031] 2) Stripping: Dissolve 10 mg MOFs-Ln in 3 mL CH 3 CH 2 In -OH, ultrasonic for 30 min, centrifuge to collect the part of MOFs-Ln that fell off, and wash with n-hexane 3 times, dissolve the precipitate in 10 mL n-hexane solution containing 0.2 mM n-butyllithium, and place it at room temperature and N 2 Under protected conditions, fully stir overnight, centrifuge the above reaction solution, remove the supernatant, and use 10 mL CH for precipitation 3 CH 2 -OH...
Embodiment 3
[0036] A zinc oxide-metal organic framework composite antibacterial material, similar to Example 1, is prepared according to the following steps:
[0037] (1) Preparation of MOFs-Ln:
[0038] 1) Synthesis: Take 1 mmol TDA and 0.5 mmol lanthanide nitrate Eu(NO 3 ) 3 Dissolve in 40 mL 80 mM Na OH solution, mix well, transfer to a 50 mL reactor, react at 160 ℃ for 20 hours, after the reaction, filter off the supernatant and use CH for precipitation 3 CH 2 -OH cleaned three times and dried at 60 ℃ to obtain MOFs-Ln for use;
[0039] 2) Stripping: Dissolve 10 mg MOFs-Ln in 3 mL CH 3 CH 2 In -OH, ultrasonic for 30 min, centrifuge to collect the part of MOFs-Ln that fell off, and wash with n-hexane 3 times, dissolve the precipitate in 10 mL n-hexane solution containing 0.2 mM n-butyllithium, and place it at room temperature and nitrogen (N 2 ) Under protected conditions, stir well overnight, centrifuge the above reaction solution, remove the supernatant, and use 10 mL CH for precipitation 3 ...
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