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dc.contributor.authorAyán Varela, Migueles_ES
dc.contributor.authorFernández Merino, María Jesúses_ES
dc.contributor.authorParedes Nachón, Juan Ignacioes_ES
dc.contributor.authorVillar Rodil, Silviaes_ES
dc.contributor.authorFernández Sánchez, Césares_ES
dc.contributor.authorGuardia, Lauraes_ES
dc.contributor.authorMartínez Alonso, Ameliaes_ES
dc.contributor.authorDíez Tascón, Juan Manueles_ES
dc.identifier.citationJournal of Materials Chemistry A 2(20): 7295-7305 (2014)es_ES
dc.description.abstractMetal-assisted reduction of graphene oxide (GO) has recently emerged as a fast, efficient and room-temperature method towards the preparation of chemically derived graphene, but according to the mechanisms of reduction that have been proposed, not all relevant metals (e.g., Ag) should be a priori effective for this purpose. Here, we show that aqueous GO dispersions can be very efficiently reduced at room temperature with NaBH4 using Ag nanoparticles (Ag NPs) as catalysts, either generated in situ from appropriate precursors (AgNO3) or added to the dispersions as pre-formed objects. We propose and investigate a reduction mechanism that involves the charging of the Ag NPs with excess electrons obtained from the oxidation of a product of the spontaneous hydrolysis of NaBH4 in the aqueous medium. These excess electrons are then transferred to the GO sheets, triggering their reduction. The catalytic and electrochemical performance of the reduced GO–Ag NP hybrids that result from this process has also been examined. In particular, the hybrids are seen to exhibit very high catalytic activity in the reduction of 4-nitrophenol to 4-aminophenol as a model reaction, and are also effective towards the electrochemical reduction of H2O2.es_ES
dc.description.sponsorshipFinancial support from the Spanish MINECO and the European Regional Development Fund through project MAT2011-26399 is gratefully acknowledged. M.A.-V. and M.J.F.-M. are indebted to MINECO for their pre-doctoral (FPI) contracts.es_ES
dc.publisherRoyal Society of Chemistry (UK)es_ES
dc.titleHighly efficient silver-assisted reduction of graphene oxide dispersions at room temperature: mechanism, and catalytic and electrochemical performance of the resulting hybridses_ES
dc.description.peerreviewedPeer reviewedes_ES
dc.contributor.funderMinisterio de Economía y Competitividad (España)es_ES
oprm.item.hasRevisionno ko 0 false*
dc.contributor.orcidVillar Rodil, Silvia [0000-0002-5832-9971]es_ES
dc.contributor.orcidParedes Nachón, Juan Ignacio [0000-0002-0044-9153]es_ES
dc.contributor.orcidMartínez Alonso, Amelia [0000-0002-7183-0859]es_ES
dc.contributor.orcidDíez Tascón, Juan Manuel [0000-0001-9219-7266]es_ES
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