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    Ultrathin Films of Porous Metal-Organic Polyhedra for Gas Separation

    Year: 2020

    Journal: Chem.-Eur. J., Volume 26, JAN 2, page 143–147

    Authors: Andres, MA; Carne-Sanchez, A; Sanchez-Lainez, J; Roubeau, O; Coronas, J; Maspoch, D; Gascon, I

    Organizations: Spanish MINECO [RTI2018-095622-B-I00, MAT2016-78257-R, MAT2016-77290-R, MAT2017-86826-R, IJCI-2016-29802]; Catalan AGAURAgencia de Gestio D'Ajuts Universitaris de Recerca Agaur (AGAUR) [2017 SGR 328]; ERC under the EU-FP7 [ERC-Co 615954]; CERCA Program/Generalitat de Catalunya; Aragon GovernmentGobierno de Aragon [T43_17R, E31_17R]; Severo Ochoa program from Spanish MINECO [SEV-2017-0706]; Spanish Education Ministry Program FPU2014

    Keywords: atomic force microscopy; CO2 separation; Langmuir-Blodgett technique; metal-organic polyhedra; thin films; scanning electron microscopy

    Ultrathin films of a robust Rh-II-based porous metal-organic polyhedra (MOP) have been obtained. Homogeneous and compact monolayer films (ca. 2.5 nm thick) were first formed at the air-water interface, deposited onto different substrates and characterized using spectroscopic methods, scanning transmission electron microscopy and atomic force microscopy. As a proof of concept, the gas separation performance of MOP-supported membranes has also been evaluated. Selective MOP ultrathin films (thickness ca. 60 nm) exhibit remarkable CO2 permeance and CO2/N-2 selectivity, demonstrating the great combined potential of MOP and Langmuir-based techniques in separation technologies.
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