A kind of hydrophilic bifunctional monomer imprinted adsorption material and its preparation method
A dual-functional monomer, imprinted adsorption technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water pollutants, etc., can solve the problems of low hydrophilicity, unsatisfactory adsorption capacity and adsorption efficiency, etc. Small equipment investment, good economic value, high toxicity
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Embodiment 1
[0047] Weigh 0.3 g of porous carbon nanospheres into a three-necked flask, then add 45 mL of absolute ethanol, 15 mL of deionized water, and 1 mL (1.045 g) of γ-(methacryloyloxy)propyltrimethoxysilane, and adjust with glacial acetic acid. The pH of the reaction system is ≈5, heated to 65°C with magnetic stirring for 2h. After the reaction, the reaction product was dried for 12 hours in a vacuum oven at a temperature of 55° C. and a vacuum degree of 10 Pa to obtain silanized porous carbon nanospheres.
[0048] Weigh 0.1 g of silanized porous carbon nanospheres, disperse them in 25 mL of chloroform together with 0.416 g of acrylamide-2-methylpropanesulfonic acid and 0.142 g of acrylamide, stir at room temperature for 1 h, then add 0.094 g of phenol, and continue the reaction for 0.5 h. Then add 0.065g of initiator azobisisobutyronitrile and 3.96g of cross-linking agent ethylene glycol dimethacrylate, and pass nitrogen gas for 10min to remove the oxygen in the solution, then sea...
Embodiment 2
[0058] Weigh 0.1 g of the silanized porous carbon nanospheres prepared in Example 1, disperse them in 25 mL of chloroform together with 0.45 g of acrylamide-2-methylpropanesulfonic acid and 0.15 g of acrylamide, stir at room temperature for 1.5 h, and then add 0.1 g phenol, continue to react for 0.5h. Then add 0.06g of initiator ammonium persulfate and 4.5g of cross-linking agent ethylene glycol dimethacrylate, and pass nitrogen gas for 10 minutes to remove oxygen in the solution, then seal and heat to 50°C for 24 hours.
[0059] The reaction product was separated, and the phenol molecule was eluted according to the method in Example 1 to prepare a hydrophilic bifunctional monomer imprinted adsorption material.
Embodiment 3
[0061] Weigh 0.1 g of the silanized porous carbon nanospheres prepared in Example 1, disperse them in 25 mL of chloroform together with 0.39 g of acrylamide-2-methylpropanesulfonic acid and 0.11 g of acrylamide, stir at room temperature for 1 h, and then add 0.08 g Phenol, continue to react for 1h. Then add 0.06g of initiator azobisisobutyronitrile and 0.5g of crosslinking agent divinylbenzene, pass nitrogen gas for 10min to remove oxygen in the solution, seal and heat to 50°C for 24h.
[0062] The reaction product was separated, and the phenol molecule was eluted according to the method in Example 1 to prepare a hydrophilic bifunctional monomer imprinted adsorption material.
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