A kind of preparation method of rare earth nd3+ ion imprinted composite membrane
A technology of ion imprinting and composite membrane, applied in chemical instruments and methods, alkali metal compounds, other chemical processes, etc., can solve the problems of limited carbon adsorption selectivity, high synthesis cost of ordinary adsorbents, etc., and achieve the goal of selective adsorption The effect of ion, adsorption capacity advantage
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Embodiment 1
[0042] (1) Ultrasonic degasses the nanocrystalline cellulose suspension, draws 10ml of the NCC suspension into a 50ml round bottom flask, first adds 150mg of glucose, stirs in a water bath at 60°C for 1h, and then adds ethyl orthosilicate dropwise TEOS 400ul, continuously stirred and reacted for 2h, and finally poured the reaction solution into an evaporating dish, placed it in a constant temperature water bath at 27°C to dry, and obtained a colorful and glossy chiral sequence membrane material.
[0043] (2) Ultrasonic degas the NCC suspension, draw 10ml of NCC suspension into a 50ml round bottom flask, first add 150mg of glucose, and 0.0134g of NdCl 3 ·6H 2 O, stirred in a water bath at 60°C for 1h, then added 321ul GLYMO-IDA ligand and 400ul TEOS in sequence, and stirred at 60°C for 2h. Place in a constant temperature water bath at 27°C to dry to obtain an ion composite membrane material.
[0044] (3) Place the membrane material in the elution solution of sulfuric acid and w...
Embodiment 2
[0050] (1) Ultrasonic degasses the nanocrystalline cellulose suspension, draws 10ml of the NCC suspension into a 50ml round bottom flask, first adds 100mg of glucose, and 0.0066g of NdCl 3 ·6H 2 O, keep stirring in a 60°C water bath for 1h, add 157ul GLYMO-IDA ligand and 400ul TEOS in sequence, and stir at 60°C for 2h. Place in a constant temperature water bath at 27°C to dry to obtain an ion composite membrane material.
[0051] (2) Place the membrane material in the elution solution of sulfuric acid and water at 1:2, and elute in a constant temperature water bath at 85°C.
[0052] (3) The infrared image of the ion imprinted composite membrane is as follows Figure 5 shown.
[0053] (4) The XRD pattern of the ion imprinted composite membrane is as follows Figure 6 shown.
Embodiment 3
[0055] (1) Ultrasonic degasses the nanocrystalline cellulose suspension, draws 10ml of NCC suspension into a 50ml round bottom flask, first adds 50mg of glucose, and 0.0033g of NdCl 3 ·6H 2 O, keep stirring in a water bath at 60°C for 1h, add 78ul GLYMO-IDA ligand and 400ul TEOS in turn, stir and react at 60°C for 2h, place in a constant temperature water bath at 27°C and dry to obtain an ion composite membrane material.
[0056] (2) Place the membrane material in the elution solution of sulfuric acid and water at 1:2, elute in a constant temperature water bath at 85°C, change the eluent every day, and elute for more than a week. membrane.
[0057] (3) The prepared composite adsorption membrane material is used for Nd 3+ Ion separation and adsorption experiments.
[0058] Take Nd 3+ The ions are configured into a series of standard solutions with different concentrations (10, 20, 30, 40, 50, 60, 70, 80, 90mg / l). Weigh 10mg of composite adsorption membrane material and add...
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