Coupling in situ synchrotron radiation with ex situ spectroscopy characterizations to study the formation of Ba1−xSrxTiO3 nanoparticles in supercritical fluids
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | PHILIPPOT, Gilles | |
| hal.structure.identifier | Center for Materials Crystallography [Aarhus] [CMC] | |
| dc.contributor.author | JENSEN, Kirsten M.Ø. | |
| hal.structure.identifier | Center for Materials Crystallography [Aarhus] [CMC] | |
| dc.contributor.author | CHRISTENSEN, Mogens | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | ELISSALDE, Catherine | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | MAGLIONE, Mario | |
| hal.structure.identifier | Center for Materials Crystallography [Aarhus] [CMC] | |
| dc.contributor.author | IVERSEN, Bo B. | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | AYMONIER, Cyril | |
| dc.date.issued | 2014 | |
| dc.identifier.issn | 0896-8446 | |
| dc.description.abstractEn | High quality barium strontium titanate (BaxSr1 − xTiO3 with 0 ≤ x ≤ 1-BST) nanoparticles can be synthesized using supercritical fluids technology. Well crystallized particles of 20 nm with a narrow size distribution were produced in a single step. The reaction is achieved at relatively low temperature (T < 400 °C) and in tens of seconds. The combination of in situ synchrotron wide angle X-ray scattering (WAXS) and ex situ analyses in the form of Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and high resolution transmission electron microscopy (HR-TEM) leads to an understanding of the influence of the substitution of barium cations with strontium ones on the BST nanoparticle growth. A correlation between particle size, density of -OH groups at the surface of the particles and BST composition is exhibited; the higher the -OH density and the lower the strontium concentration, the larger the particles. This confirms that the formation of BST nanoparticles in supercritical fluids is governed by a sol-gel mechanism. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Barium strontium titanate | |
| dc.subject.en | Supercritical fluids | |
| dc.subject.en | In situ | |
| dc.subject.en | Synchrotron WAXS | |
| dc.subject.en | Growth mechanism | |
| dc.title.en | Coupling in situ synchrotron radiation with ex situ spectroscopy characterizations to study the formation of Ba1−xSrxTiO3 nanoparticles in supercritical fluids | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.supflu.2013.12.009 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Supercritical Fluids | |
| bordeaux.page | 111-117 | |
| bordeaux.volume | 87 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00956772 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00956772v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Supercritical%20Fluids&rft.date=2014&rft.volume=87&rft.spage=111-117&rft.epage=111-117&rft.eissn=0896-8446&rft.issn=0896-8446&rft.au=PHILIPPOT,%20Gilles&JENSEN,%20Kirsten%20M.%C3%98.&CHRISTENSEN,%20Mogens&ELISSALDE,%20Catherine&MAGLIONE,%20Mario&rft.genre=article |
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