“…NIPS can adjust the structure and performance of the membrane according to the application of the membrane. It has become the main method for preparing microporous membranes ( Liu et al., 2013 , 2020 ; Kim et al., 2017 ). However, there is no report on PDRC so far.…”
Section: Resultsmentioning
confidence: 99%
“…The content of DMF will be getting lower, while the content of water will be getting higher. Because the solvents have good mutual solubility with water, during the phase transformation process, the solvent and non-solvent produce double diffusion perpendicular to the surface of the coating ( Liu et al., 2020 ). The water is immiscible with the P(VdF-HFP)ap in the system, and small water droplets will merge themselves to form larger pores.…”
“…NIPS can adjust the structure and performance of the membrane according to the application of the membrane. It has become the main method for preparing microporous membranes ( Liu et al., 2013 , 2020 ; Kim et al., 2017 ). However, there is no report on PDRC so far.…”
Section: Resultsmentioning
confidence: 99%
“…The content of DMF will be getting lower, while the content of water will be getting higher. Because the solvents have good mutual solubility with water, during the phase transformation process, the solvent and non-solvent produce double diffusion perpendicular to the surface of the coating ( Liu et al., 2020 ). The water is immiscible with the P(VdF-HFP)ap in the system, and small water droplets will merge themselves to form larger pores.…”
“…The increased fluorescence of retentate reveals that the size sieving rather than adsorption plays a dominating role in the QDs recovery. Compared with our previously reported BCP-based membranes 26 , 37 , 38 and other membranes prepared by various materials, 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 the PS- b -P2VP- m UPCF/AAO composite membranes show outstanding selectivities with ∼2–10 times higher water permeance ( Figure 3 D), indicating their high efficiency for membrane-based separations, such as protein purification, nanoparticle concentration, and recovery of nano-sized precious metals from water. Figure 3 Separation Performance of PS- b -P2VP- m UPCF/AAO Composite Membranes (A) Performances with various PS- b -P2VP concentrations, swelling temperatures, and durations.…”
Fast solvent evaporation is developed to produce UPCFs on porous substrates-Selective swelling to cavitate block copolymers to form interconnected mesopores-UPCFs enable the preparation of highly permeable membranes ll www.cell.com/the-innovation
“…An SPSf membrane was selected as the substrate for the preparation of the I-Cage-Cl composite membrane. The SPSf membrane was prepared according to a previous literature study . The casting solution was composed of 5 g of PEG, 41 g of DMAc, and 9 g of SPSf.…”
The
harmful effect of poisonous oxoanions on the water environment
highlights the urgent demand for effective adsorption materials. Rather
than utilizing open framework materials carrying continuous pores
as oxoanion traps, nanoporous molecular cages with discrete pores
show promise since they are supposed to have higher adsorption efficiency.
However, they are rarely reported in the field of decontamination.
Herein, we utilize a nanoporous cationic organic cage, I-Cage-Cl,
as a type of adsorbent that can efficaciously and selectively trap
hazardous oxoanions from aqueous solutions via anion exchange. Specifically,
cationic I-Cage-Cl shows a superior uptake capacity of CrO4
2– (540 mg g–1) that surpasses
the reported nanoporous cationic frameworks along with excellent selectivity
for CrO4
2– even with a 500-fold excess
of interfering ions (Br–, NO3
–, ClO4
–, and BF4
–). Furthermore, we fabricate an I-Cage-SPSf composite membrane (SPSf
= sulfonated polysulfone), which can rapidly reduce trace Cr(VI) below
the drinking water standard while also exhibiting extremely high water
flux (80 L m–2 h–1 bar–1) and admirable reproducibility. These intriguing features indicate
that nanoporous organic cages are promising candidates for wastewater
treatment.
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