UiO-66 incorporated thin-film nanocomposite membranes for efficient selenium and arsenic removal

Enhanced dispersibility of metal–organic frameworks (MOFs) in the organic phaseviasurface modification for TFN nanofiltration membrane preparation

“…The rejection of MgSO 4 > Na 2 SO 4 was due to the larger hydrated diameter of Mg 2+ , which was in accordance with the previous research in other literature. 10 When the UiO-66-NH 2 -PC loading amount was within 0.10% w/v, the MgSO 4 rejection was about 100% and NaCl rejection was above 30%, so the UiO-66-NH 2 -PC loading amount of 0.10% w/v was an acceptable value.…”

Nanofiltration for Arsenic Removal: Challenges, Recent Developments, and Perspectives

“…The active layer thickness and pore radius can be tuned through controlling the amount of Phg. The functionality of phenol greatly influenced the properties and performances of the membranes [ 166 ]. Song et al [ 172 ] prepared a TFC hollow NF membrane via the solution coating process.…”

“… Scanning electron micrograph (SEM) images of surface morphology and cross-sectional structure of typical TFC-NF membranes: ( A ) surface image (at 35,000× and 500 nm scale); ( B ) cross-sectional image (at 35,000× and 2 μm scale) of NF-PS-3 membrane; ( C ) surface 10,000×; and ( D ) cross-sectional 2000× views of a typical PMIA asymmetric membrane. (adapted with permission from [ 163 , 164 , 166 , 167 , 168 ]. (PMIA = Poly m–phenylene isophthalamide) …”

A thin film nanocomposite membrane with pre-immobilized UiO-66-NH2 toward enhanced nanofiltration performance

“…As a prototype Zr-MOF, UiO-66 has displayed interesting physical and chemical characteristics for the preparation of highly water-stable MOF membranes for liquid separation. [22][23][24] The highly regular structure of UiO-66 with the aperture size of about 6.0 A, 25,26 which is located between H 2 O (2.6 A) and hydrated ions (e.g. Na + 7.2 A, Mg 2+ 8.6 A, SO 4 2À 7.6 A, Cl À 6.6 A), is promising for achieving high ux and sustains high salt rejections by ionic sieving.…”