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Lorena Paseta,Marta Navarro,Joaquín Coronas,Carlos Téllez 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.77 No.-
The toxic solvent dimethylformamide has been replaced by the greener dimethylsulfoxide in the castingand activation processes for the preparation of thinfilm composite (TFC) membranes. This methodologyhas been validated with the use of MOFs ZIF-8, ZIF-93 and UiO-66 asfillers for thin-film nanocomposite(TFN) membranes. These membranes were successfully applied in the organic solvent nanofiltration ofsunset yellow (SY) in methanol obtaining the highest permeance when UiO-66 and ZIF-93 were usedwith a value of 11 L m 2 h-1 bar-1. The permeance improvements are related to the MOF porosity,polyamide-MOF layer thickness and the hydrophilic/hydrophobic character of the membrane.
Lilian Sarango,Lorena Paseta,Marta Navarro,Beatriz Zornoza,Joaquín Coronas 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.59 No.-
ZIF-8 and ZIF-67 particles, with sizes of 70 ± 10 nm and 240 ± 40 nm, respectively, were deposited by dip-coating on top of polyimide P84® asymmetric supports. In the best conditions, this gives rise to a MOF (metal-organic framework) monolayer which remains on the polyimide support during the interfacial polymerization of polyamide carried out to produce a thin film nanocomposite membrane for organic solvent nanofiltration (OSN). This method is simple, shorter and is environmentally friendly, since no excess MOF is lost during the interfacial polymerization, exhibiting good OSN results: dye rejection of 90% together with a high methanol permeance of 8.7 L m−2 h−1 bar−1.