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Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/45375

Title: Selective sulfur dioxide adsorption on crystal defect sites on an isoreticular metal organic framework series
Authors: Rodríguez-Albelo, L. Marleny
López-Maya, Elena
Harnad, Said
Ruiz-Salvador, A. Rabdel
Calero, Sofia
Rodríguez Navarro, Jorge Andrés
Issue Date: 2017
Abstract: The widespread emissions of toxic gases from fossil fuel combustion represent major welfare risks. Here we report the improvement of the selective sulfur dioxide capture from flue gas emissions of isoreticular nickel pyrazolate metal organic frameworks through the sequential introduction of missing-linker defects and extra-framework barium cations. The results and feasibility of the defect pore engineering carried out are quantified through a combination of dynamic adsorption experiments, X-ray diffraction, electron microscopy and density functional theory calculations. The increased sulfur dioxide adsorption capacities and energies as well as the sulfur dioxide/carbon dioxide partition coefficients values of defective materials compared to original non-defective ones are related to the missing linkers enhanced pore accessibility and to the specificity of sulfur dioxide interactions with crystal defect sites. The selective sulfur dioxide adsorption on defects indicates the potential of fine-tuning the functional properties of metal organic frameworks through the deliberate creation of defects.
Sponsorship: We thank generous funding from the European Research Council through an ERC Starting Grant (ERC2011-StG-279520-RASPA), the Spanish Ministry of Economy (CTQ2013-48396-P, CTQ2014-53486-R, CTQ2015-70135-REDT) and FEDER and Marie Curie IIF-625939 (LMRA) funding from European Union and Andalucía Region (FQM-1851).
Publisher: Nature Publishing Group
Keywords: Sulphur dioxide
Adsorption
Surface chemistry
Crystal
Isoreticular metal-organic
Properties
URI: http://hdl.handle.net/10481/45375
ISSN: 2041-1723
Citation: Rodríguez-Albelo, L.M. ; et al. Selective sulfur dioxide adsorption on crystal defect sites on an isoreticular metal organic framework series. Nature Communications, 8: 14457 (2017). [http://hdl.handle.net/10481/45375]
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