Synthesis of Cuboctahedral CeO2 Nanoclusters and Their Assembly into Cuboid Nanoparticles by Oriented Attachment
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Other documents of the author: Maya Johnson, Santiago; Gracia, Lourdes; Longo, Elson; Andres, Juan; Leite, Edson R.
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Title
Synthesis of Cuboctahedral CeO2 Nanoclusters and Their Assembly into Cuboid Nanoparticles by Oriented AttachmentDate
2017ISSN
2199-692XBibliographic citation
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.Type
info:eu-repo/semantics/articlePublisher version
http://onlinelibrary.wiley.com/doi/10.1002/cnma.201700005/fullVersion
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Abstract
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 4Investigation project
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” / PRX15/00261Rights
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