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Toward the design of efficient adsorbents for Hg2+ removal: Molecular and thermodynamic insights
dc.creator | Forgionny A. | |
dc.creator | Acelas N.Y. | |
dc.creator | Jimenez-Orozco C. | |
dc.creator | Flórez E. | |
dc.date | 2020 | |
dc.date.accessioned | 2021-02-05T14:58:56Z | |
dc.date.available | 2021-02-05T14:58:56Z | |
dc.identifier.issn | 207608 | |
dc.identifier.uri | http://hdl.handle.net/11407/6038 | |
dc.description | A systematic DFT study was performed to evaluate the effect of oxygenated functional groups for Hg2+ adsorption in aqueous systems. This work includes several aspects usually neglected in many current works, namely, ground-state multiplicity, solvation effects, establishment of thermodynamic parameters, atomic charge transfer, and modeling of infrared spectra. In addition, two carbonaceous models were studied to account for both the effect of the carbonaceous matrix and the oxygenated functional groups on the Hg2+ binding. Adsorption energies indicated that Hg2+ adsorption on the unsaturated model is favored in the following order: phenol > lactone > semiquinone > carboxyl, whereas for the saturated model, the Hg2+ adsorption energy decrease order is: carboxyl > semiquinone > lactone. Thermodynamic parameters confirmed that the adsorption process is spontaneous (unsaturated model), while the infrared spectra provided an insight at the atomic level about the experimentally reported bands. Our results contributed to a deeper understanding of the current experimental information on the effect of the surface functional groups on the Hg2+ adsorption over carbonaceous materials as different active sites can be present on oxygenated carbonaceous materials for metal adsorption. The results also create new ways to improve the performance of adsorption capability of mercury and other pollutants. © 2020 Wiley Periodicals, Inc. | |
dc.language.iso | eng | |
dc.publisher | John Wiley and Sons Inc. | |
dc.relation.isversionof | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85084308339&doi=10.1002%2fqua.26258&partnerID=40&md5=82dbd6da8f9243b6cbaf3d4072eb5319 | |
dc.source | International Journal of Quantum Chemistry | |
dc.subject | adsorption | spa |
dc.subject | aqueous solution | spa |
dc.subject | carbonaceous material | spa |
dc.subject | mercury | spa |
dc.subject | water treatment | spa |
dc.title | Toward the design of efficient adsorbents for Hg2+ removal: Molecular and thermodynamic insights | |
dc.type | Article | eng |
dc.rights.accessrights | info:eu-repo/semantics/restrictedAccess | |
dc.identifier.doi | 10.1002/qua.26258 | |
dc.subject.keyword | Atoms | eng |
dc.subject.keyword | Charge transfer | eng |
dc.subject.keyword | Design for testability | eng |
dc.subject.keyword | Esters | eng |
dc.subject.keyword | Ground state | eng |
dc.subject.keyword | Spectroscopy | eng |
dc.subject.keyword | Thermodynamics | eng |
dc.subject.keyword | Adsorption capability | eng |
dc.subject.keyword | Adsorption energies | eng |
dc.subject.keyword | Adsorption process | eng |
dc.subject.keyword | Carbonaceous materials | eng |
dc.subject.keyword | Carbonaceous matrix | eng |
dc.subject.keyword | State multiplicity | eng |
dc.subject.keyword | Surface functional groups | eng |
dc.subject.keyword | Thermodynamic parameter | eng |
dc.subject.keyword | Adsorption | eng |
dc.publisher.faculty | Facultad de Ciencias Básicas | spa |
dc.affiliation | Forgionny, A., Grupo de Materiales con Impacto, Mat&mpac. Facultad de Ciencias Básicas, Universidad de Medellín, Medellín, Colombia | |
dc.affiliation | Acelas, N.Y., Grupo de Materiales con Impacto, Mat&mpac. Facultad de Ciencias Básicas, Universidad de Medellín, Medellín, Colombia | |
dc.affiliation | Jimenez-Orozco, C., Grupo de Materiales con Impacto, Mat&mpac. Facultad de Ciencias Básicas, Universidad de Medellín, Medellín, Colombia | |
dc.affiliation | Flórez, E., Grupo de Materiales con Impacto, Mat&mpac. Facultad de Ciencias Básicas, Universidad de Medellín, Medellín, Colombia | |
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dc.type.version | info:eu-repo/semantics/publishedVersion | |
dc.type.driver | info:eu-repo/semantics/article |
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