Effects of -NO2 and -NH2 functional groups in mixed-linker Zr-based MOFs on gas adsorption of CO2 and CH4
|dc.identifier.citation||Rada, Z. and Abid, H. and Sun, H. and Shang, J. and Li, J. and He, Y. and Liu, S. et al. 2018. Effects of -NO2 and -NH2 functional groups in mixed-linker Zr-based MOFs on gas adsorption of CO2 and CH4. Progress in Natural Science: materials international. 28 (2): pp. 160-167.|
This study was undertaken to evaluate the effects of mixing BDC-NO 2 and BDC-NH 2 linkers in the synthesis of Zr-based metal organic frameworks (Zr-MOFs) on their adsorption and separation of CO 2 and CH 4 . UiO-66 with single or binary -NO 2 and -NH 2 samples were synthesized under solvothermal conditions and activated by solvent exchanging using methanol. Structural analyses of the materials were conducted using FTIR, XRD, TGA, SEM, 1 HNMR and N 2 adsorption/desorption techniques and adsorption of CO 2 and CH 4 at high pressures and different temperatures (273 and 298 K) was investigated. It was found that UiO-66-NH 2 exhibited higher CO 2 and CH 4 adsorption capacities than those of UiO-66-NO 2 . Addition of -NH 2 functional group in UiO-66-NO 2 could enhance CO 2 and CH 4 adsorption due to the extra CO 2 adsorption sites of -NH 2 functional groups. Addition of -NO 2 functional group to UiO-66-NH 2 at a low loading could also increase CO 2 and CH 4 adsorption, however, a high loading of NO 2 functional group to UiO-66-NH 2 would result in decreased adsorption.
|dc.title||Effects of -NO2 and -NH2 functional groups in mixed-linker Zr-based MOFs on gas adsorption of CO2 and CH4|
|dcterms.source.title||Progress in Natural Science: materials international|
|curtin.department||WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)|
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