Application of porous cationic polymer in removal of dyes or heavy metals in wastewater
A technology of cationic polymers and heavy metals, applied in animal processing wastewater treatment, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve problems such as unfavorable water treatment applications, expensive monomers, instability, etc., to achieve Stable structure, strong modifiability, and high site density
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Embodiment 1
[0036] Synthesis of Porous Cationic Polymer PIm-DCX
[0037] Dissolve 2-phenylimidazole (PIm) (1 mmol) and α,α'-dichloro-p-xylene (DCX) (1 mmol) at a molar ratio of 1:1 in 10 mL of 1,2-dichloroethane solution, Add anhydrous FeCl to the above solution 3 (4 times the molar amount of the monomer) (4 mmol), the mixture was stirred and reacted at a temperature of 80° C. for 24 h. After the reaction was completed, cool to room temperature, collect the precipitate by filtration and wash it with methanol until the washing solution was clear, then extract it with methanol for 24 hours. The purified solid product was vacuum-dried at 80° C. for 24 hours to obtain a brown powdery solid porous cationic polymer PIm-DCX.
[0038] The structural formula of the porous cationic polymer PIm-DCX is as follows:
[0039]
[0040] SEM of the porous cationic polymer PIm-DCX as figure 1 As shown, it is an amorphous structure, and a large number of small nanoparticles are piled up into a porous ...
Embodiment 2
[0044] Synthesis of Porous Cationic Polymer PIm-BCMB
[0045] Dissolve 2-phenylimidazole (PIm) (1 mmol) and biphenyldichlorobenzyl (BCMB) (1 mmol) at a molar ratio of 1:1 in 10 mL of 1,2-dichloroethane solution, and add Anhydrous FeCl 3 (4 times the molar amount of the monomer) (4 mmol), the mixture was stirred and reacted at a temperature of 90° C. for 22 h. After the reaction was completed, cool to room temperature, collect the precipitate by filtration and wash it with methanol until the washing solution was clear, then extract it with methanol for 24 hours. The purified solid product was vacuum-dried at 80° C. for 24 hours to obtain a brown powdery solid porous cationic polymer PIm-BCMB.
[0046] The structural formula of the porous cationic polymer PIm-BCMB is as follows:
[0047]
[0048] The infrared spectrum of the porous cationic polymer PIm-BCMB is as follows figure 2 Shown at 1656 and 1567cm -1 The two absorption peaks at are from the stretching vibration o...
Embodiment 3
[0051] Synthesis of Porous Cationic Polymer PPY-DCX
[0052] Dissolve 2-phenylpyridine (PPY) (1 mmol) and α,α'-dichloro-p-xylene (DCX) (1 mmol) at a molar ratio of 1:1 in 10 mL of 1,2-dichloroethane solution, Add anhydrous FeCl to the above solution 3 (4 times the molar amount of the monomer) (4 mmol), the mixture was stirred and reacted at a temperature of 80° C. for 24 h. After the reaction was completed, cool to room temperature, collect the precipitate by filtration and wash it with methanol until the washing solution was clear, then extract it with methanol for 24 hours. The purified solid product was vacuum-dried at 80° C. for 24 hours to obtain a brown powdery solid porous cationic polymer PPY-DCX.
[0053] The structural formula of the porous cationic polymer PPY-DCX is as follows:
[0054]
[0055] Scanning electron microscopy of the porous cationic polymer PPY-DCX as figure 1 As shown, it is an amorphous structure, and a large number of small nanoparticles are...
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