Synthesis of Cuboctahedral CeO2 Nanoclusters and Their Assembly into Cuboid Nanoparticles by Oriented Attachment
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Otros documentos de la autoría: Maya Johnson, Santiago; Gracia, Lourdes; Longo, Elson; Andres, Juan; Leite, Edson R.
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http://dx.doi.org/10.1002/cnma.201700005 |
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Título
Synthesis of Cuboctahedral CeO2 Nanoclusters and Their Assembly into Cuboid Nanoparticles by Oriented AttachmentFecha de publicación
2017ISSN
2199-692XCita bibliográfica
MAYA‐JOHNSON, Santiago, et al. Synthesis of Cuboctahedral CeO2 Nanoclusters and Their Assembly into Cuboid Nanoparticles by Oriented Attachment. ChemNanoMat, 2017, vol. 3, no 4, p. 228-232.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://onlinelibrary.wiley.com/doi/10.1002/cnma.201700005/fullVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
Here, we describe a simple approach to control the oriented attachment process through selective ligand scavenging from the {100} facets of CeO2 nanoclusters. Aggregates of these nanoclusters smaller than 10 nm with ... [+]
Here, we describe a simple approach to control the oriented attachment process through selective ligand scavenging from the {100} facets of CeO2 nanoclusters. Aggregates of these nanoclusters smaller than 10 nm with controlled shapes and exposed facets were obtained. For the synthesis of the cuboctahedral CeO2 nanoclusters, we developed a solvent-controlled synthesis approach based on a non-hydrolytic sol–gel process and used an ester aminolysis reaction to control ligand scavenging from the {100} facets. First-principle calculations allowed us to understand and interpret, at the atomic level, the effects of shape control on the synthesis. Fine-tuning of the desired morphologies can be achieved by controlling the values of the surface energies, which leads to the formation of morphologies that the classic growth process does not allow. [-]
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ChemNanoMat, 2017, vol. 3, no 4Proyecto de investigación
FAPESP / CEPID project 2013/07296-2; FINEP; CNPq; CAPES; Generalitat Valenciana for PrometeoII / 2014/022; ACOMP/2014/270; ACOMP/2015/1202; Ministerio de Economia y Competitividad / CTQ2015-65207-P; Programa de Cooperación Cientifíca con Iberoamerica (Brasil) of the Ministerio de Educación / PHBP14-00020; Ministerio de Economia y Competitividad, “Salvador Madariaga” / PRX15/00261Derechos de acceso
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