Dendrimer functionalized mesoporous material as well as preparation method and application thereof
A technology of dendritic molecules and mesoporous materials, applied in chemical instruments and methods, energy wastewater treatment, ion exchange water/sewage treatment, etc., to achieve good stability, excellent regeneration performance, reusability, and high specific surface area
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Embodiment 1
[0033] The preparation method of the G1 dendrimer functionalized mesoporous material for rapidly and efficiently removing NSAIDs in water comprises the following steps:
[0034] (1) Dissolve 13.8g P123 and 7.6g mass concentration 35% concentrated hydrochloric acid in 250mL water, fully stir until P123 is completely dissolved until transparent, add 24.8g ethyl orthosilicate dropwise under vigorous stirring, the mixed solution is at 35 ℃ water bath with continuous stirring for 12h. The mixture was then transferred into a reaction kettle and hydrothermally treated at 130 °C for 24 h. The resulting white precipitate was filtered and washed repeatedly with water. Finally, the product was calcined at 550 °C for 2 h to obtain large-pore SBA-15; the obtained SBA-15 was soaked in 3 mol / L hydrochloric acid solution overnight, and then dewatered and activated at 160 °C for 6 h;
[0035](2) Disperse 4g of the above activated SBA-15 in 110mL of anhydrous toluene, add 4mL of 3-aminopropyl...
Embodiment 2
[0038] A preparation method of a G2 dendrimer functionalized mesoporous material for rapidly and efficiently removing non-steroidal anti-inflammatory drugs in water, comprising the following steps:
[0039] (1) The same as step (1) in Example 1, SBA-15 was obtained.
[0040] (2) same as step (2) in embodiment 1, obtain NH 2 -SBA-15.
[0041] (3) The same as step (3) in Example 1, a half-generation dendrimer functionalized G0.5-SBA-15 was obtained. G0.5-SBA-15 was placed in 100 mL of 80% methanol aqueous solution, 0.6 g of methylamine was added, and the reaction was refluxed at 80 °C for 4 h. The above reaction solution was filtered, washed with methanol and acetone in turn, and vacuum-dried at 60°C for 3 hours to obtain a dendrimer with a secondary amine as an end group. G2-SBA-15 was synthesized by the quaternization end-capping reaction of amines.
Embodiment 3
[0043] A preparation method of a G3 dendrimer functionalized mesoporous material for rapidly and efficiently removing non-steroidal anti-inflammatory drugs in water, comprising the following steps:
[0044] (1) The same as step (1) in Example 1, SBA-15 was obtained.
[0045] (2) same as step (2) in embodiment 1, obtain NH 2 -SBA-15.
[0046] (3) Same as step (3) in Example 2, obtain 1.5-generation dendrimer functionalized G1.5-SBA-15. Put G1.5-SBA-15 in 100 mL of 80% methanol aqueous solution, add 1.2 g Methylamine was refluxed at 80°C for 4h. The above reaction solution was filtered, washed with methanol and acetone in turn, and vacuum-dried at 60°C for 3 hours to obtain a dendrimer with a secondary amine as an end group. G3-SBA-15 was synthesized by quaternization end-capping reaction of amines.
[0047] see attached figure 2 The TEM image of G3-SBA-15 in the dendrimer-functionalized mesoporous silicon still maintains a highly ordered pore structure, which will be very...
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