Oxidized graphene/mesoporous silica compound ultrafiltration membrane preparation method and application thereof
A technology of mesoporous silica and ultrafiltration membrane, which is applied in the preparation method of peptides, chemical instruments and methods, ultrafiltration, etc., can solve the problems of increased flux and interception, side effects, and easy agglomeration, and achieve increased mechanical properties and thermal stability effects
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Embodiment 1
[0033] ①Activation of SBA-15: Take 1 g of dry SBA-15 and disperse it in 2mol / L HCl solution, reflux at 80°C for 24h, wash with distilled water three times, then vacuum dry at 80°C for 12h to obtain activated SBA-15.
[0034] ② Amination modification of SA-15: Disperse 1 g of dry activated SBA-15 in 40 mL of anhydrous toluene, and then add 0.9 mL of APTES dropwise to the solution. The mixed system was condensed and refluxed at 100° C. for 12 h under the protection of nitrogen. The product was washed three times with toluene and ethanol, and finally dried under vacuum at 50 °C for 12 h to obtain NH 2 -SBA-15.
[0035] ③ Preparation of GO-SBA-15: Graphene oxide was prepared by improving the Hummers method. Take 0.05g GO and disperse in 100mL DMF, and ultrasonicate vigorously for 30min. Subsequently, 0.2 g NH 2 -SBA-15 and 0.04g DCC, 40°C water bath for 24h. Finally, the product was washed three times with DMF and ethanol, and dried under vacuum at 50 °C for 12 h to obtain GO...
Embodiment 2
[0039] ①Activation of SBA-15: Take 1 g of dry SBA-15 and disperse it in 2mol / L HCl solution, reflux at 80°C for 24h, wash with distilled water three times, then vacuum dry at 80°C for 12h to obtain activated SBA-15.
[0040] ② Amination modification of SA-15: Disperse 1 g of dry activated SBA-15 in 40 mL of anhydrous toluene, and then add 1.4 mL of APTES dropwise to the solution. The mixed system was condensed and refluxed at 100° C. for 12 h under the protection of nitrogen. The product was washed three times with toluene and ethanol, and finally dried under vacuum at 50 °C for 12 h to obtain NH 2 -SBA-15.
[0041] ③ Preparation of GO-SBA-15: Graphene oxide was prepared by improving the Hummers method. Take 0.08g GO and disperse it in 100mL DMF, and intensify sonication for 30min. Subsequently, 0.2 g NH 2 -SBA-15 and 0.04g DCC, 40°C water bath for 24h. Finally, the product was washed three times with DMF and ethanol, and dried under vacuum at 50 °C for 12 h to obtain GO-...
Embodiment 3
[0045] ①Activation of SBA-15: Take 1 g of dry SBA-15 and disperse it in 2mol / L HCl solution, reflux at 80°C for 24h, wash with distilled water three times, then vacuum dry at 80°C for 12h to obtain activated SBA-15.
[0046] ② Amination modification of SA-15: Disperse 1 g of dry activated SBA-15 in 40 mL of anhydrous toluene, and then add 0.9 mL of APTES dropwise to the solution. The mixed system was condensed and refluxed at 100° C. for 12 h under the protection of nitrogen. The product was washed three times with toluene and ethanol, and finally dried under vacuum at 50 °C for 12 h to obtain NH 2 -SBA-15.
[0047] ③ Preparation of GO-SBA-15: Graphene oxide was prepared by improving the Hummers method. Take 0.05g GO and disperse in 100mL DMF, and ultrasonicate vigorously for 30min. Subsequently, 0.2 g NH 2 -SBA-15 and 0.04g DCC, 40°C water bath for 24h. Finally, the product was washed three times with DMF and ethanol, and dried under vacuum at 50 °C for 12 h to obtain GO...
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