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dc.creatorGómez-Villalba, Luz Stella
dc.creatorSierra-Fernández, Aránzazu
dc.creatorMilošević, Olivera
dc.creatorFort, R.
dc.creatorRabanal, Maria Eugenia
dc.date.accessioned2018-01-30T10:09:16Z
dc.date.available2018-01-30T10:09:16Z
dc.date.issued2017
dc.identifier.issn0921-8831
dc.identifier.urihttp://dais.sanu.ac.rs/123456789/15970
dc.description.abstractMicro and nanostructured brucite (Mg(OH2)) particles synthesized by hydrothermal method from solutions with high content of hydrazine (0.14 M) and nitrate (0.24 g) were compared with samples obtained from low hydrazine content (0.0002 M) and nitrate (0.12 g). The samples were heated at 180 °C for 4 h, 6 h and 12 h. XRD, TEM-HRTEM, SAED and image analysis techniques were used for the morphological and structural characterization. The effect of electron beam irradiation on the brucite dehydration was observed in atomic resolution images at 300 kV. Hexagonal crystals show differences in crystallinity, strains and kinetic of reaction. High hydrazine/nitrate samples have slightly larger crystals with better crystallinity, showing a strong preferential orientation. Rietveld refinements show how unit cell parameters are bigger in samples obtained with higher hydrazine/nitrate content, confirming also the preferential orientation along the 0 0 0 1 plane. Differences in the dehydration process show the rapid formation of a porous surface, the amorphised cortex or the presence of highly oriented strains in samples prepared from higher hydrazine/nitrate content. Conversely, crystals slightly smaller with randomly scattered defect surfaces showing the Mg(OH)2/MgO interphase in samples prepared with low hydrazine/nitrate content. Significant differences in the kinetic of reaction indicate how the dehydration process is faster in samples prepared with high hydrazine/nitrate content.eng
dc.format28 1 (2017) 61-72
dc.languageen
dc.publisherElsevier
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172035/RS//
dc.relationCommunity of Madrid, Spain, Project GEOMATERIALES II (S2013/MIT-2914)
dc.relationAutonomous Region Program of Madrid, Spain, MULTIMAT-CHALLENGE (ref. S2013/MIT-2862)
dc.relationInnovation and Education Ministry, Spain, Project MAT2013-47460-C5-5-P
dc.relationInterministerial Commission for Science and Technology (CICYT), Spain, Project MAT2010-19837-C06-05
dc.rightsrestrictedAccess
dc.sourceAdvanced Powder Technologyeng
dc.subjectBrucite
dc.subjectPericlase
dc.subjectHydrothermal synthesis
dc.subjectTEM-HRTEM-XRD
dc.titleAtomic scale study of the dehydration/structural transformation in micro and nanostructured brucite (Mg(OH)2) particles: Influence of the hydrothermal synthesis conditionseng
dc.typearticle
dc.rights.licenseARR
dcterms.abstractРабанал, Мариа Еугениа; Гомез-Виллалба, Луз Стелла; Форт, Р.; Сиерра-Фернандез, A.; Милошевић, Оливера;
dc.citation.spage61
dc.citation.epage72
dc.citation.volume28
dc.citation.issue1
dc.identifier.wos2-s2.0-84994705274
dc.identifier.doi10.1016/j.apt.2016.08.014
dc.identifier.scopus000395355100009
dc.type.versionpublishedVersion
dc.identifier.fulltexthttp://dais.sanu.ac.rs/bitstream/handle/123456789/15970/paper1238-1968.pdf


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