CO Guest Interactions in SDB-Based Metal–Organic Frameworks: A Solid-State Nuclear Magnetic Resonance Investigation
| Autor: | Yining Huang, Shoushun Chen, Troy K. Babcock, Y. T. Angel Wong, Bryan E. G. Lucier |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
02 engineering and technology Surfaces and Interfaces 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Spectral line 0104 chemical sciences chemistry.chemical_compound Adsorption chemistry Solid-state nuclear magnetic resonance Chemical physics Electrochemistry General Materials Science Metal-organic framework 0210 nano-technology Spectroscopy Carbon monoxide |
| Zdroj: | Langmuir. 34:15640-15649 |
| ISSN: | 1520-5827 0743-7463 |
| Popis: | Metal–organic frameworks (MOFs) are promising materials for greener carbon monoxide (CO) capture and separation processes. SDB-based (SDB = 4,4’-sulfonyldibenzoate) MOFs are particularly attractive due to their remarkable gas adsorption capacity under humid conditions. However, to the best of our knowledge, their CO adsorption abilities have yet to be investigated. In this report, CO-loaded PbSDB and CdSDB were characterized using variable-temperature (VT) 13C solid-state nuclear magnetic resonance (SSNMR) spectroscopy. These MOFs readily captured CO, with the adsorbed CO exhibiting dynamics as indicated by the temperature-dependent changes in the SSNMR spectra. Spectral simulations revealed that the CO simultaneously undergoes a localized wobbling about the adsorption site and a nonlocalized hopping between adjacent adsorption sites. The wobbling and hopping angles were also found to be temperature-dependent. From the appearance of the VT spectra and the extracted motional data, the CO adsorption mechani... |
| Databáze: | OpenAIRE |
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