Deposition of Ni nanoparticles onto porous supports using supercritical CO2: effect of the precursor and reduction methodology

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dc.contributor.authorMorère, Jacobo
dc.contributor.authorRoyuela, Sergio
dc.contributor.authorAsensio, Guillermo
dc.contributor.authorEnciso, Eduardo
dc.contributor.authorPando, Concepción
dc.contributor.authorCabañas Poveda, Albertina
dc.date.accessioned2023-06-18T06:48:10Z
dc.date.available2023-06-18T06:48:10Z
dc.date.issued2015-11-16
dc.description.abstractThe deposition of Ni nanoparticles into porous supports is very important in catalysis. In this paper, we explore the use of supercritical CO2 (scCO2) as a green solvent to deposit Ni nanoparticles on mesoporous SiO2 SBA-15 and a carbon xerogel. The good transport properties of scCO2 allowed the efficient penetration of metal precursors dissolved in scCO2 within the pores of the support without damaging its structure. Nickel hexafluoroacetylacetonate hydrate, nickel acetylacetonate, bis(cyclopentadienyl)nickel, Ni(NO3)2⋅6H2O and NiCl2⋅6H2O were tried as precursors. Different methodologies were used: impregnation in scCO2 and reduction in H2/N2 at 400°C and low pressure, reactive deposition using H2 at 200–250°C in scCO2 and reactive deposition using ethanol at 150–200°C in scCO2. The effect of precursor and methodology on the nickel particle size and the material homogeneity (on the different substrates) was analysed. This technology offers many opportunities in the preparation of metal-nanostructured materials.
dc.description.departmentDepto. de Química Física
dc.description.facultyFac. de Ciencias Químicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Economía y Competitividad
dc.description.sponsorshipMinisterio de Economía y Competitividad
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/34389
dc.identifier.doi10.1098/rsta.2015.0014
dc.identifier.issn0264-3820 (Print) ; 2053-9231 (On line)
dc.identifier.officialurlhttp://rsta.royalsocietypublishing.org/content/373/2057/20150014
dc.identifier.urihttps://hdl.handle.net/20.500.14352/24238
dc.journal.titlePhilosophical Transactions A
dc.language.isoeng
dc.publisherThe Royal Society of London
dc.relation.projectIDCTQ2013-41781
dc.relation.projectIDMAT2012-39199-C02-02.
dc.rights.accessRightsopen access
dc.subject.cdu544
dc.subject.keywordMetal deposition
dc.subject.keywordNickel nanoparticles
dc.subject.keywordSupercritical CO2
dc.subject.keywordMesoporous SiO2 SBA-15
dc.subject.keywordMesoporous Carbon
dc.subject.ucmQuímica física (Química)
dc.titleDeposition of Ni nanoparticles onto porous supports using supercritical CO2: effect of the precursor and reduction methodology
dc.typejournal article
dc.volume.number373
dspace.entity.typePublication
relation.isAuthorOfPublication08f9e67b-e7ba-420b-a651-37a03ba04f0c
relation.isAuthorOfPublication.latestForDiscovery08f9e67b-e7ba-420b-a651-37a03ba04f0c
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