A description of the formation and growth processes of CaTiO(3)mesocrystals: a joint experimental and theoretical approach

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniv Fed Pelotas-
Autor(es): dc.contributorUniv Jaume 1-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.creatorMoreira, Mario L.-
Autor(es): dc.creatorBordin, Jose Rafael-
Autor(es): dc.creatorAndres, Juan-
Autor(es): dc.creatorVarela, Jose A. [UNESP]-
Autor(es): dc.creatorLongo, Elson-
Data de aceite: dc.date.accessioned2022-02-22T00:11:31Z-
Data de disponibilização: dc.date.available2022-02-22T00:11:31Z-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-08-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1039/d0me00043d-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/197188-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/197188-
Descrição: dc.descriptionIn this paper, we report on a combined experimental and theoretical study conducted in order to rationalize the formation and growth mechanism of CaTiO(3)mesocrystals through the microwave-assisted hydrothermal synthesis over short times. The transformation process in which the initial nanoplates are converted to microcube-like CaTiO(3)is investigated in detail. Field emission scanning electron microscopy, photoluminescence emission analysis and Langevin dynamic simulations were carried out. We determined how the quenching rate induced by microwave irradiation can be used to finely tune the structural characteristics of the final CaTiO(3)nanoparticles, including size, shape and crystallinity, showing that the microcube-like particles appear only within a temperature range of 130-200 degrees C. The theoretical and experimental results allow us to propose a mechanism involving three steps: i) a nucleation process of nanoplates below 10 min, ii) a self-assembly process of nanoplates to form microcube-shaped CaTiO(3)under specific thermodynamic conditions, and finally, iii) the formation of microcube-like shapes as the result of a long assembly process. The present results not only provide a deeper insight into the nucleation and growth processes, but also help to find a relationship between morphology and photoluminescence behavior throughout the microwave-assisted hydrothermal synthesis of target metal oxides. These findings shift the focus of the experimental and theoretical research onto the detailed study of the connectivity of TiO(6)octahedra and CaO(12)cube-octahedra as the constituent building blocks of the CaTiO(3)lattice, paving the way for quantitative predictions of the events involved in the self-assembly processes of CaTiO(3)nanocrystals.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionFAPERGS-
Descrição: dc.descriptionUniversitat Jaume I-
Descrição: dc.descriptionMinisterio de Ciencia, Innovacion y Universidades (Spain)-
Descrição: dc.descriptionUniv Fed Pelotas, Inst Fis & Matemat, Dept Fis, POB 354, BR-96010900 Pelotas, RS, Brazil-
Descrição: dc.descriptionUniv Jaume 1, Dept Quim Fis & Analit, Campus Riu Sec, Castellon de La Plana 12080, Spain-
Descrição: dc.descriptionUniv Estadual Paulista, Inst Quim, INCTMN Dept Fis Quim, POB 355,R Francisco Degni 55, BR-14801907 Araraquara, SP, Brazil-
Descrição: dc.descriptionUniv Fed Sao Carlos, INCTMN Inst Chem, Rod Washington Luis,Km 235, BR-13565905 Sao Carlos, SP, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista, Inst Quim, INCTMN Dept Fis Quim, POB 355,R Francisco Degni 55, BR-14801907 Araraquara, SP, Brazil-
Descrição: dc.descriptionCAPES: 001-
Descrição: dc.descriptionFAPERGS: 16/2551-0000525-7-
Descrição: dc.descriptionFAPERGS: 17/2551-0001-
Descrição: dc.descriptionUniversitat Jaume I: UJI-B2019-30-
Descrição: dc.descriptionMinisterio de Ciencia, Innovacion y Universidades (Spain): PGC2018-094417-B-I00-
Formato: dc.format1255-1266-
Idioma: dc.languageen-
Publicador: dc.publisherRoyal Soc Chemistry-
Relação: dc.relationMolecular Systems Design & Engineering-
???dc.source???: dc.sourceWeb of Science-
Título: dc.titleA description of the formation and growth processes of CaTiO(3)mesocrystals: a joint experimental and theoretical approach-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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