Water Vapor Adsorption on CAU-10-X: Effect of Functional Groups on Adsorption Equilibrium and Mechanisms
| Autor: | Elizaveta A Fedorova, Marina V. Solovyeva, Yuri I. Aristov, Alexandr Shkatulov, Larisa G. Gordeeva, Tamara Krieger |
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| Rok vydání: | 2021 |
| Předmět: |
Work (thermodynamics)
Chemistry Adsorption equilibrium 02 engineering and technology Surfaces and Interfaces 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Desalination Article 0104 chemical sciences Adsorption Chemical engineering Electrochemistry Proton NMR General Materials Science Fourier transform infrared spectroscopy 0210 nano-technology Spectroscopy Water vapor |
| Zdroj: | Langmuir |
| ISSN: | 1520-5827 0743-7463 |
| Popis: | Metal–organic frameworks (MOFs) possess unique flexibility of structure and properties, which drives them toward applications as water adsorbents in many emerging technologies, such as adsorptive heat transformation, water harvesting from the air, dehumidification, and desalination. A deep understanding of the surface phenomena is a prerequisite for the target-oriented design of MOFs with the required adsorption properties. In this work, we comprehensively study the effect of functional groups on water adsorption on a series CAU-10-X substituted with both hydrophilic (X = NH2) and hydrophobic (X = NO2) groups in the linker. The adsorption equilibrium is measured at P = 7.6–42 mbar and T = 5–100 °C. The study of water adsorption by a set of mutually complementary physicochemical methods (TG, XRD in situ, FTIR, and 1H NMR relaxometry) elucidates the nature of primary adsorption sites and water adsorption mechanisms. |
| Databáze: | OpenAIRE |
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