A preparation method and application of an ion imprinted composite membrane for selectively separating palladium ions
The technology of ion imprinting and palladium ion is applied in the field of preparation of ion imprinting composite membrane, which can solve the problems of low selectivity and poor membrane flux of ion imprinting membrane, and achieve the effects of convenient subsequent separation, high porosity and large flow rate.
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Embodiment 1
[0054] Preparation of S1, polydimethylsiloxane (PDMS) base film
[0055] Mix 2.0g of PDMS main agent and 0.2g of curing agent evenly and place in a polytetrafluoroethylene petri dish, put 2 sugar cubes (15mm×15mm×10mm) in the above petri dish, and make the petri dish under vacuum condition The mixed reagent in the medium completely fills the space of the sugar cube through capillary action, and the petri dish is placed in a 60°C drying oven to cure for 10 hours; take out the cured PDMS, wash and soak repeatedly in deionized water at 50°C to remove the sugar cube, and place it at 40°C After drying, the PDMS base film was obtained.
[0056] S2, preparation of modified PDMS membrane (KH570@PDMS)
[0057] Cut the PDMS basement membrane prepared in S1 into long strips (7.5mm×15mm×10mm), immerse 6 cut PDMS basement membranes in a mixed solution composed of 80mL ethanol and 20mL water, add 1mL γ-(formazan Acryloyloxy)propyltrimethoxysilane (KH570), nitrogen gas was passed through t...
Embodiment 2
[0068] Preparation of S1, polydimethylsiloxane (PDMS) base film
[0069] Mix 2.0g of PDMS main agent and 0.2g of curing agent evenly and place in a polytetrafluoroethylene petri dish, put 2 sugar cubes (15mm×15mm×10mm) in the above petri dish, and make the petri dish under vacuum condition The mixed reagent in the medium completely fills the space of the sugar cube through capillary action, and the petri dish is placed in a 60°C drying oven to cure for 10 hours; take out the cured PDMS, wash and soak repeatedly in deionized water at 50°C to remove the sugar cube, and place it at 40°C After drying, the PDMS base film was obtained.
[0070] S2, preparation of modified PDMS membrane (KH570@PDMS)
[0071] Cut the PDMS basement membrane prepared in S1 into long strips (7.5mm×15mm×10mm), immerse 6 cut PDMS basement membranes in a mixed solution composed of 80mL ethanol and 20mL water, add 3mL γ-(formazan Acryloyloxy)propyltrimethoxysilane (KH570), nitrogen gas was passed through t...
Embodiment 3
[0081] Preparation of S1, polydimethylsiloxane (PDMS) base film
[0082] Mix 2.0g of PDMS main agent and 0.2g of curing agent evenly and place in a polytetrafluoroethylene petri dish, put 2 sugar cubes (15mm×15mm×10mm) in the above petri dish, and make the petri dish under vacuum condition The mixed reagent in the medium completely fills the space of the sugar cube through capillary action, and the petri dish is placed in a 60°C drying oven to cure for 10 hours; take out the cured PDMS, wash and soak repeatedly in deionized water at 50°C to remove the sugar cube, and place it at 40°C After drying, the PDMS base film was obtained.
[0083] S2, preparation of modified PDMS membrane (KH570@PDMS)
[0084]Cut the PDMS basement membrane prepared in S1 into long strips (7.5mm×15mm×10mm), immerse 6 cut PDMS basement membranes in a mixed solution composed of 80mL ethanol and 20mL water, add 5mLγ-(formazol Acryloyloxy)propyltrimethoxysilane (KH570), nitrogen gas was passed through to ...
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