Metal organic framework membrane with organic layer and application of metal organic framework membrane
A technology of metal-organic framework and organic layer, which is applied in the field of battery film and VFB film, can solve the problems of battery performance degradation, collapse, film layer instability, etc., and achieve the effect of improving stability
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Embodiment 1
[0054] MOF-801 crystal synthesis: 3.20g ZrOCl 2 ·8H 2 O and 1.16g of fumaric acid were dissolved in a mixed solvent of DMF / formic acid (40mL / 14mL). After the solution was ultrasonically dissolved, the uniformly dispersed solution was slowly poured into the reactor, and the reactor was sealed and reacted at 130°C for 6h. Cool down after the reaction, take out the sample and wash it three times with DMF and three times with methanol, soak it in methanol solution for 3 days, and finally dry it under vacuum at 60°C for 24 hours to collect MOF-801 white powder.
[0055] MOF-808 crystal synthesis: 0.54g ZrOCl 2 ·8H 2 O and 0.11g of trimesic acid were dissolved in a mixed solvent of DMF / formic acid (25mL / 25mL). After the solution was ultrasonically dissolved, the uniformly dispersed solution was slowly poured into the reactor, and the reactor was sealed and reacted at 130°C for 48h. Cool down after the reaction, take out the sample and wash it three times with DMF and three times ...
Embodiment 2
[0057] Preparation of MOF-801 membrane
[0058] Select 1mm porous α-Al 2 o 3 The ceramic sheet is used as a support, and it is pretreated before use: first, use the whole body and immerse it in concentrated hydrogen peroxide for 2 hours, take it out and rinse it with deionized water, put it into the reaction kettle, add a certain amount of deionized water, and heat it at 120°C , heated for 2 hours, and dried at 60°C for 12 hours after taking it out. Prepare 0.1wt% MOF-801 seed crystal solution. Then, the pretreated side of the support surface was horizontally immersed in the seed liquid for 10 seconds by dipping and pulling method, and then dried at room temperature for 10 minutes. This was repeated three times, and then placed in an oven at 60°C for 12 hours. Then the support (with the seed crystal side down) was horizontally fixed on the polytetrafluoroethylene support and placed at the bottom of the reactor. 3.20g ZrOCl 2 ·8H 2 O and 1.16g of fumaric acid were dissolv...
Embodiment 3
[0066] Preparation of sulfonated polyetheretherketone (sPEEK) protective layer
[0067] The organic layer was prepared by spin coating method: PEEK (polyether ether ketone) was sulfonated in sulfuric acid (98 wt%) at 50° C. for 5 h to obtain sPEEK. After drying, use DMF as a solvent to prepare a 1g / 10mL clear sPEEK organic solution. Fix the activated MOF-801 film on the spin coater, set the graded speed time to (1000r / min 10s; 3000r / min 60s), low-speed rotation makes the solution on the surface of the MOF-801 film diffuse from the center to the surroundings, high-speed Spin to remove excess solution from the membrane surface. In order to control the repeatability of the experiment, the fixed membrane area was 4.9cm 2 , drop 2 times, 5 μL sPEEK organic solution each time. Finally, the spin-coated MOF-801 film was removed and dried in vacuum at 60 °C for 24 h. From figure 2 It can be seen from the electron microscope image that the thickness of the prepared organic layer i...
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