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11B-MAS NMR approach to the boron adsorption mechanism on a glucose-functionalised mesoporous silica matrix

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11B-MAS NMR approach to the boron adsorption mechanism on a glucose-functionalised mesoporous silica matrix

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dc.contributor.author Sanfeliu Cano, Cristina es_ES
dc.contributor.author Martínez-Máñez, Ramón es_ES
dc.contributor.author Sancenón Galarza, Félix es_ES
dc.contributor.author Soto Camino, Juan es_ES
dc.contributor.author Amorós, Pedro es_ES
dc.contributor.author Azaïs, T. es_ES
dc.contributor.author Marcos Martínez, María Dolores es_ES
dc.date.accessioned 2019-05-08T20:30:52Z
dc.date.available 2019-05-08T20:30:52Z
dc.date.issued 2018 es_ES
dc.identifier.issn 1387-1811 es_ES
dc.identifier.uri http://hdl.handle.net/10251/120134
dc.description.abstract [EN] Boron chemistry has raised much interest because, despite the difference between necessities and toxicity being very narrow, it is still widely used in industrial processes. In a previous work we reported an adsorbent for boron extraction from water by the functionalisation of a UVM-7 mesoporous silica matrix with gluconamide moieties. The ability of this material to adsorb boron is based on its well-known affinity for coordinating the cis-diols present in attached saccharide. Although much research on the formation of boron esters with sugars and sugar derivatives in solution has been done, very few reports have dealt with the adsorption mechanism of boron onto functionalised materials in the solid state. Hence an in-depth study of the adsorption process was conducted in this paper. For this purpose, several solids with increasing boron contents were prepared from the gluconamide-functionalised UVM-7 material and an isothermal boron adsorption curve was obtained. The B-11 and C-13 MAS NMR techniques were used to characterise the obtained solids, and the simulation of the boron NMR and isothermal adsorption combined data was accomplished to enlighten the boron adsorption process. A model with three different coordination environments, two possible adsorption sites and the presence of oligomeric boron species allowed us to reproduce not only the isothermal boron adsorption curve, but also the evolution of the integrated areas for the signals in the B-11 MAS NMR spectra obtained for the different boron-containing gluconamide-functionalised UVM-7 materials. es_ES
dc.description.sponsorship Financial support from the Spanish Government (Project MAT2009-14564-C04-01 and MAT2012-38429-C04-01) and the Generalitat Valenciana (Project PROMETEO/2009/016) is gratefully acknowledged. C.S. thanks the MICINN for a predoctoral fellowship. es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation MECD/MAT2009-14564-C04-01 es_ES
dc.relation MINECO/MAT2012-38429-C04-01 es_ES
dc.relation info:eu-repo/grantAgreement/Generalitat Valenciana//PROMETEO09%2F2009%2F016/ES/Ayuda prometeo 2009 para el grupo de diseño y desarrollo de sensores/ es_ES
dc.relation.ispartof Microporous and Mesoporous Materials es_ES
dc.rights Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) es_ES
dc.subject Gluconamide-functionalised porous materials es_ES
dc.subject Boron adsorption modelling es_ES
dc.subject B-11 MAS NMR es_ES
dc.subject.classification QUIMICA INORGANICA es_ES
dc.subject.classification QUIMICA ORGANICA es_ES
dc.title 11B-MAS NMR approach to the boron adsorption mechanism on a glucose-functionalised mesoporous silica matrix es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.micromeso.2018.02.016 es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Química - Departament de Química es_ES
dc.description.bibliographicCitation Sanfeliu Cano, C.; Martínez-Máñez, R.; Sancenón Galarza, F.; Soto Camino, J.; Amorós, P.; Azaïs, T.; Marcos Martínez, MD. (2018). 11B-MAS NMR approach to the boron adsorption mechanism on a glucose-functionalised mesoporous silica matrix. Microporous and Mesoporous Materials. 266:232-241. https://doi.org/10.1016/j.micromeso.2018.02.016 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://doi.org/10.1016/j.micromeso.2018.02.016 es_ES
dc.description.upvformatpinicio 232 es_ES
dc.description.upvformatpfin 241 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 266 es_ES
dc.relation.pasarela S\360956 es_ES
dc.contributor.funder Generalitat Valenciana es_ES
dc.contributor.funder Ministerio de Educación es_ES
dc.contributor.funder Ministerio de Economía, Industria y Competitividad es_ES


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