MoS2/polyelectrolyte hybrid nanofiltration membrane and production method thereof
A polyelectrolyte and nanofiltration membrane technology, applied in the field of membrane separation, can solve the problems of unreported dye wastewater separation performance, achieve excellent removal rate and flux, overcome the decline of membrane performance, and improve the effect of dispersion stability
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[0018] Example 1
[0019] (1) Disperse 0.5g of ammonium molybdate tetrahydrate and 1.0g of thiourea into 9ml of deionized water, stir until completely dissolved to form liquid A, add 1.0g of PDDA to 9ml of deionized water and stir for 2h to form liquid B, slow down liquid A Drop into B solution and stir for 24h, add to 25ml reaction kettle, react at 150℃ for 36h, cool to room temperature naturally, centrifuge and wash with deionized water and absolute ethanol, dry in 40℃ oven for 24h, and grind to prepare PDDA Modified MoS 2 Two-dimensional layered particles;
[0020] (2) Prepare 100ml of 10.0g / L PDDA solution with deionized water, and mix the 0.1g / L MoS prepared in step (1) 2 Add to the PDDA solution, ultrasonic for 0.5h; in addition, prepare 100ml of sodium lignosulfonate solution with a concentration of 10.0g / L;
[0021] (3) Wash the pretreated negatively charged polyacrylonitrile base membrane with deionized water to neutrality, immerse it in the PDDA solution of step (2) for 10...
Example Embodiment
[0023] Example 2
[0024] (1) Disperse 0.5g of ammonium molybdate tetrahydrate and 1.0g of thiourea into 9ml of deionized water, stir until completely dissolved to form liquid A, add 1.0g of PDDA to 9ml of deionized water and stir for 2h to form liquid B, slow down liquid A Drop into B solution and stir for 24h, add to 25ml reaction kettle, react at 280℃ for 15h, cool to room temperature naturally, centrifuge and wash three times with deionized water and absolute ethanol, dry in 110℃ oven for 12h, and grind to make PDDA modified MoS 2 Two-dimensional layered particles;
[0025] (2) Prepare 100ml of 1.0g / L PDDA solution with deionized water, and mix 1.0g / L MoS prepared in step (1) 2 Add the PDDA solution to ultrasonic for 4h; in addition, prepare 100ml sodium lignosulfonate solution with a concentration of 1.0g / L;
[0026] (3) Wash the pretreated negatively charged polyacrylonitrile-based membrane with deionized water to neutrality, immerse it in the PDDA solution of step (2) for 40 ...
Example Embodiment
[0028] Example 3
[0029] (1) Disperse 0.5g of ammonium molybdate tetrahydrate and 4.0g of thiourea into 9ml of deionized water, stir until completely dissolved to form liquid A, add 1.5g of PDDA to 8.5ml of deionized water and stir for 2h to form liquid B, add liquid A Slowly drip into liquid B and stir for 24h, add it to a 25ml reactor, react at 220℃ for 18h, cool to room temperature naturally, centrifuge and wash three times with deionized water and absolute ethanol, dry in an oven at 60℃ for 18h, and grind. 2D layered material MoS 2 ;
[0030] (2) Prepare 100ml of PDDA solution with a concentration of 5.0g / L with deionized water, and combine the 0.08gMoS prepared in step (1) 2 Add PDDA solution to ultrasonic for 2h; in addition, prepare 100ml sodium lignosulfonate solution with a concentration of 5.0g / L;
[0031] (3) Wash the pretreated negatively charged polyacrylonitrile-based membrane with deionized water to neutrality, immerse it in the PDDA solution of step (2) for 20 minut...
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