Study of Mesostructured CeO2 Synthesis via Nanocasting Using SBA-15 as a Template: Influence of the Cerium Precursor

dc.contributor.authorMoreno de la Calle, A.
dc.contributor.authorVizcaíno, A.J.
dc.contributor.authorCarrero, A.
dc.contributor.authorCalles, J.A.
dc.contributor.authorMegía, P.J.
dc.date.accessioned2025-07-15T06:48:21Z
dc.date.available2025-07-15T06:48:21Z
dc.date.issued2025-12-03
dc.description.abstractMesoporous materials with high surface area, large pore volume, and adjustable pore size are promising in the fields of adsorption and heterogeneous catalysis. In this work, ordered mesoporous ceria structures were successfully prepared via nanocasting using SBA-15 as a template, with Ce(NO3)3·6H2O or CeCl3·7H2O as ceria precursors. The materials were characterized before and after template removal. The CeO2 crystallite size in the CeO2/SBA-15 composites increases with successive impregnations until it reaches the pore size of the SBA-15. Upon removal of the SBA-15 template, the synthesized materials exhibit pore diameters corresponding to the wall thickness of the SBA-15, evidencing that the inverted structure was obtained. Mesoporous ceria exhibits increasingly ordered structure up to five successive impregnations with 1.3 mmolCe/gSBA-15. Using cerium chloride as a precursor, highly ordered structures were reached after only three impregnations. The feasibility of this synthesis in fewer steps (1, 3, and 5), employing the same amount of Ce precursor (6.7 mmolCe/gSBA-15), was also studied. Results show a higher ordering degree and oxygen mobility capacity at higher impregnation steps. The mesostructured ceria samples exhibit significantly higher oxygen mobility than commercial bulk ceria, along with high thermal stability, which highlights the usefulness of these structures.
dc.identifier.citationMoreno de la Calle, Á.; Vizcaíno, A.J.; Carrero, A.; Calles, J.A.; Megía, P.J. Study of Mesostructured CeO2 Synthesis via Nanocasting Using SBA-15 as a Template: Influence of the Cerium Precursor. Int. J. Mol. Sci. 2024, 25, 13016. https://doi.org/10.3390/ijms252313016
dc.identifier.doi10.3390/ijms252313016
dc.identifier.issn1422-0067
dc.identifier.urihttps://hdl.handle.net/10115/92437
dc.language.isoen
dc.publisherMDPI
dc.rightsAttribution 4.0 Internationalen
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectceria
dc.subjectstructured materials
dc.subjectchemical synthesis
dc.subjectnanostructures
dc.titleStudy of Mesostructured CeO2 Synthesis via Nanocasting Using SBA-15 as a Template: Influence of the Cerium Precursor
dc.typeArticle

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