On the reversed crystal growth of BaZrO3 decaoctahedron: shape evolution and mechanism
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Other documents of the author: Moreira, Mario Lucio; Andres, Juan; Mastelaro, Valmor Roberto; Varela, José A.; Longo, Elson
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comunitat-uji-handle2:10234/7013
comunitat-uji-handle3:10234/8638
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Title
On the reversed crystal growth of BaZrO3 decaoctahedron: shape evolution and mechanismAuthor (s)
Date
2011Publisher
Royal Society of ChemistryISSN
1466-8033Bibliographic citation
CrystEngComm (2011) vol. 13, p. 5818-5824Type
info:eu-repo/semantics/articlePublisher version
http://pubs.rsc.org/en/content/articlepdf/2011/ce/c1ce05361bVersion
info:eu-repo/semantics/publishedVersionSubject
Abstract
BaZrO3 (BZO) nanoparticles were nucleated, grown and subsequently self-assembled into a 3D
decaoctahedronal architecture via a microwave-assisted hydrothermal (MAH) method. X-Ray
diffraction (XRD), field emission ... [+]
BaZrO3 (BZO) nanoparticles were nucleated, grown and subsequently self-assembled into a 3D
decaoctahedronal architecture via a microwave-assisted hydrothermal (MAH) method. X-Ray
diffraction (XRD), field emission scanning microscopy (FE-SEM), X-ray absorption spectroscopy
(XAFS) as well as both photoluminescence (PL) and radioluminescence (RL) emission studies have
provided fundamental insight into the nature of the anisotropic crystal growth mechanism of BZO
nanocrystals into their final decaoctahedral shape. The growth mechanism of the assembled
nanoparticles via mesoscale transformations to form BZO decaoctahedrons occurs from the surface to
the core along a reversed crystallization route. This pathway is accompanied by a large enhancement of
RL emissions while the intensity of PL emissions is enhanced and worsened along the process. The
analysis of the results reveals a relationship between the decaoctahedrons obtained and their optical
properties. [-]
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