Regensburg 2019 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 59: Composites and Functional Polymer Hybrids
CPP 59.2: Talk
Thursday, April 4, 2019, 15:30–15:45, H8
Insights into the porous structure of metal-imidazolate frameworks having high gas uptake — •Ahmed. G. Attallah1, Suvendu. S. Mondal2, Hans-Jürgen Holdt2, and Reinhard Krause-Rehberg3 — 1Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiation Physics, Bautzner Landstr. 400, 01328 Dresden, Germany — 2Institut für Chemie, Anorganische Chemie Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany — 3Institut für Physik, Martin-Luther-Universität, Von-Danckelmann-Platz 3, 06120 Halle, Germany
Several methodologies, like pore surface-amines functionalization, defect engineering, and others have been evolved to improve gas uptake by Metal-Organic-Frameworks(MOFs). It was reported that microwave(MW)-assisted synthesis of MOFs exhibited an enhancement of N2 and CO2 uptake capacity, compared to the analogous Conventional Electric(CE)-heating based materials. However, no detailed investigations on the origin of the high guest uptake capacity of MW-assisted materials have been carried out. In this work, three MW-assisted isostructural Imidazolate-Framework-Potsdam(IFP) which showed an enhancement of CO2 and H2 uptake capacities are investigated. These three samples have flexible methoxy and ethoxy linker arms. Thus, the aim here is to understand the reasons for the high gas uptake of materials synthesized by the MW-assisted conditions compared with the same materials synthesized by CE-heating methods. This study is performed by Positron Annihilation Lifetime Spectroscopy (PALS) in addition to other characterization methods.