Three-dimensional porous UIO-66@PUF composite material, and preparation method and application thereof
A UIO-66, composite material technology, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve the problems of difficult recovery, small pollutant adsorption range, etc., to reduce mass transfer resistance. , excellent flow properties, the effect of maintaining permeability
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Embodiment 1
[0028] Step 1: Add PPU and deionized water into the reaction kettle at a mass ratio of 1:3, and vigorously stir and mix at room temperature for 60s to obtain a mixed solution. Then quickly pour the above mixed solution into the tray, because the isocyanate group (-NCO) in the prepolymer reacts with water to release CO 2 The gas makes the polyurethane foam form a porous structure. The PUF was obtained after drying at room temperature for 10 min.
[0029] Step 2: Add 0.318g of zirconium chloride and 20mL of DMF into a polytetrafluoroethylene reactor, ultrasonicate for 10min, and then stand in an oven at 120°C for 24h. Obtain the precursor solution. The PUF obtained in step 1 was cut into 1 cm×1 cm block size, added to the precursor solution and allowed to stand for 12 hours, then 0.2267 g of terephthalic acid was added to the above mixing system and stirred for 18 hours. After the reaction, the prepared composite material was taken out and placed in a beaker, 50 mL of methano...
Embodiment 2
[0032] Step 1: Add PPU and deionized water into the reaction kettle at a mass ratio of 1:3, and vigorously stir and mix at room temperature for 60s to obtain a mixed solution. Then quickly pour the above mixed solution into the tray, because the isocyanate group (-NCO) in the prepolymer reacts with water to release CO 2 The gas makes the polyurethane foam form a porous structure. The PUF was obtained after drying at room temperature for 10 min.
[0033] Step 2: Add 0.719g of zirconium chloride and 80mL of DMF into a polytetrafluoroethylene reactor, ultrasonicate for 30min, and then stand in an oven at 120°C for 24h to obtain a precursor solution. Cut the PUF obtained in the first step into 1cm×1cm block size, add it to the precursor solution and let it stand for 12h. Then 0.7112g 2-NH 2 - Terephthalic acid was added to the above mixed system and stirred for 18h. Take out the prepared composite material and place it in a beaker, add 50mL of methanol and stir for 10min, then...
Embodiment 3
[0037] Step 1: Add PPU and deionized water into the reaction kettle at a mass ratio of 1:3, and vigorously stir and mix at room temperature for 60s to obtain a mixed solution. Then quickly pour the above mixed solution into the tray, because the isocyanate group (-NCO) in the prepolymer reacts with water to release CO 2 The gas makes the polyurethane foam form a porous structure. The PUF was obtained after drying at room temperature for 10 min.
[0038] Step 2: Add 0.085g of zirconium n-propoxide and 10mL of acetone into a polytetrafluoroethylene reactor, ultrasonically treat for 30min, and then place it in an oven at 130°C for 10h to obtain a precursor solution; cut the PUF in step 1 into 1cm×1cm block size, add to the precursor solution and let it stand for 12h; then add 0.15g terephthalic acid into the above mixing system and stir for 18h. Take out the prepared composite material and place it in a beaker, add 50mL of methanol, stir for 10min, then replace the solution with ...
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