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dc.contributor.authorGuarnizo, A
dc.contributor.authorAngurell Purroy, Inmaculada
dc.contributor.authorMüller Jevenois, Guillermo
dc.contributor.authorLlorca Piqué, Jordi
dc.contributor.authorSeco García, Miquel Angel
dc.contributor.authorRossell Alfonso, Josep Oriol
dc.contributor.authorRossell Abrodos, Marta-Dacil
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.identifier.citationGuarnizo, A., Angurell, I., Müller, G., Llorca, J., Seco, M., Rossell, O., Rossell, M. Highly water-dispersible magnetite-supported Pd nanoparticles and single atoms as excellent catalysts for Suzuki and hydrogenation reactions. "RSC advances", 2016, vol. 6, núm. 73, p. 68675-68684.
dc.description.abstractThe molecule 4-(diphenylphosphino) benzoic acid (dpa) anchored on the surface of magnetite nanoparticles permits the easy capture of palladium ions that are deposited on the surface of the magnetite nanoparticles after reduction with NaBH4. Unexpectedly, a significant fraction of dpa is removed in this process. Samples of Fe(3)O(4)dpa@Pdx containing different Pd loadings (x = 0.1, 0.3, 0.5 and 1.0 wt%) were prepared, and their catalytic efficiency for the Suzuki C-C coupling reaction was studied. The best catalyst was Fe(3)O(4)dpa@Pd-0.5, which gave the highest TOF published to date for the reaction of bromobenzene with phenylboronic acid in a mixture of ethanol/water (1/1). Interestingly, the same reaction carried out in water also produced excellent yields of the resulting C-C coupling product. The behaviour of other bromide aryl molecules was also investigated. The best catalytic results for the aqueous phase reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) were obtained using Fe(3)O(4)dpa@Pd-0.1. The presence of Pd SACs (single atom catalysts) seems to be responsible for this performance. In contrast, the same Fe(3)O(4)dpa@Pd-0.1 catalyst is absolutely inactive for the hydrogenation of styrene in ethanol.
dc.format.extent10 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria química
dc.titleHighly water-dispersible magnetite-supported Pd nanoparticles and single atoms as excellent catalysts for Suzuki and hydrogenation reactions
dc.contributor.groupUniversitat Politècnica de Catalunya. NEMEN - Nanoenginyeria de materials aplicats a l'energia
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorGuarnizo, A.; Angurell, I.; Müller, G.; Llorca, J.; Seco, M.; Rossell, O.; Rossell, M.
local.citation.publicationNameRSC advances

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