Poly (vinylidene fluoride)/polyaniline/MWCNT nanocomposite ultrafiltration membrane for natural organic matter removal

A MOF@COF Composite with Enhanced Uptake through Interfacial Pore Generation

“…Combining different types of porous materials into composites can yield materials that, relative to their constituent components,exhibit greater porosity,new synergistic properties,higher stability and novel shapes for myriad applications, including separation, [1] catalysis, [2] sensing, [3] pollutant removal [4] and gas capture. [5] Such composites tend to show hierarchical porosity.Most of them are formed by embedding one porous material into another one or by interfacing two porous materials.…”

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Herein, we describe an ew class of porous composites comprising metal-organic framework (MOF) crystals confined in single spherical matrices made of packed covalentorganic framework (COF) nanocrystals.T hese MOF@COF composites are synthesized through at wo-step method of spray-drying and subsequent amorphous (imine-based polymer)-to-crystalline (imine-based COF) transformation. This transformation around the MOF crystals generates micro-and mesopores at the MOF/COF interface that provide far superior porosity compared to that of the constituent MOF and COF components added together.W er eport that water sorption in these new pores occurs within the same pressure window as in the COF pores.O ur new MOF@COF composites,w ith their additional pores at the MOF/COF interface,s hould have implications for the development of new composites.Combining different types of porous materials into composites can yield materials that, relative to their constituent components,exhibit greater porosity,new synergistic properties,higher stability and novel shapes for myriad applications, including separation, [1] catalysis, [2] sensing, [3] pollutant removal [4] and gas capture. [5] Such composites tend to show hierarchical porosity.Most of them are formed by embedding one porous material into another one or by interfacing two porous materials.

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A MOF@COF Composite with Enhanced Uptake through Interfacial Pore Generation

“…Combining different types of porous materials into composites can yield materials that, relative to their constituent components, exhibit greater porosity, new synergistic properties, higher stability and novel shapes for myriad applications, including separation, catalysis, sensing, pollutant removal and gas capture . Such composites tend to show hierarchical porosity.…”

Métodos físicos e químicos para o tratamento de efluentes

“…As membranas vêm sendo amplamente utilizadas, devido sua eficiência na remoção de diferentes compostos, sendo sua formatação escolhida quanto a porosidade determinante na remoção dos compostos. Alguns trabalhos tem relatado o uso de membranas para o tratamentos de efluentes na remoção de gorduras e bactérias do leite (Kumar et al, 2013;Wojtyniak et al, 2016;Samartino et al, 2017;Zielińska e Galik, 2017); no tratamento de águas residuárias provenientes da indústria farmacêutica, têxtil, de biotecnologia, nas refinarias de petróleo e na engenharia de alimentos, no tratamento de águas ácidas com altas concentrações de metais pesados, bactérias, protozoários, vírus e algumas moléculas de origem orgânica, remoção de corantes e Na2SO4, remoção de óleo, macropoluentes e íons (Kumar et al, 2013;Duong e Chung, 2014;Ricci et al, 2015;Mohammad et al, 2015;Aguiar et al, 2016;Walker e Narbaitz, 2016;Lin et al, 2016;Cingolani et al, 2017;Bengani-Lutz et al, 2017;Andrade et al, 2017b;Liu et al, 2017;Zielińska e Galik, 2017;Aguiar et al, 2018;Hudaib et al, 2018;Juholin et al, 2018).…”