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Fundamental Insights into the Covalent Silane Functionalization of NiFe Layered Double Hydroxides

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Fundamental Insights into the Covalent Silane Functionalization of NiFe Layered Double Hydroxides

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dc.contributor.author	Carrasco Andrés, José Alberto
dc.contributor.author	Seijas-Da Silva, Alvaro
dc.contributor.author	Oestreicher, Víctor
dc.contributor.author	Romero Pascual, Jorge
dc.contributor.author	Márkus, Bence G.
dc.contributor.author	Simon, Ferenc
dc.contributor.author	Vieira, Bruno J. C.
dc.contributor.author	Waerenborgh, João C.
dc.contributor.author	Abellán Sáez, Gonzalo
dc.contributor.author	Coronado Miralles, Eugenio
dc.date.accessioned	2020-04-29T09:22:28Z
dc.date.available	2020-04-29T09:22:28Z
dc.date.issued	2020
dc.identifier.citation	Carrasco Andrés, Jose Alberto Seijas-Da Silva, Alvaro Oestreicher, Víctor Romero Pascual, Jorge Márkus, Bence G. Simon, Ferenc Vieira, Bruno J. C. Waerenborgh, João C. Abellán Sáez, Gonzalo Coronado Miralles, Eugenio 2020 Fundamental Insights into the Covalent Silane Functionalization of NiFe Layered Double Hydroxides Chemistry-A European Journal 26
dc.identifier.uri	https://hdl.handle.net/10550/74114
dc.description.abstract	Layered double hydroxides (LDHs) are a class of 2D anionic materials exhibiting wide chemical versatility and promising applications in different fields ranging from catalysis to energy storage and conversion. However, the covalent chemistry of this kind of 2D materials is still barely explored. Herein, we report the covalent functionalization with silanes of a magnetic NiFe-LDH. The synthetic route consists of a topochemical approach followed by the anion exchange reaction of a surfactant molecules prior to the covalent functionalization with the (3- aminopropyl)triethoxysilane (APTES) molecules. The functionalized NiFe-APTES was fully characterized using X-ray diffraction, infrared spectroscopy, electron microscopy, thermogravimetric analysis coupled with mass spectrometry and 29Si solid state nuclear magnetic resonance, among others. The effect on the electronic properties of the functionalized LDH was studied by a magnetic study in combination with Mössbauer spectroscopy. Moreover, the reversibility of the silane-functionalization at basic pH was demonstrated, and the quality of the resulting LDH proved by studying the electrochemical performance in the oxygen evolution reaction in basic media. Furthermore, the anion exchange capability for the NiFe-APTES was tested employing Cr(VI), resulting in an increase of 200 % of the anion retention. This report allows a new level in the tunability of LDHs opening the door to the synthesis of new hybrid materials and architectures.
dc.language.iso	eng
dc.relation.ispartof	Chemistry-A European Journal, 2020, vol. 26
dc.subject	Materials
dc.subject	Materials compostos
dc.title	Fundamental Insights into the Covalent Silane Functionalization of NiFe Layered Double Hydroxides
dc.type	journal article	es_ES
dc.date.updated	2020-04-29T09:22:29Z
dc.identifier.doi	10.1002/chem.201905397
dc.identifier.idgrec	137320
dc.rights.accessRights	open access	es_ES