Synthesis and characterization of magnetite-maghemite nanoparticles obtained by the high-energy ball milling method

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dc.citation.journalTitleJOURNAL OF NANOPARTICLE RESEARCH
dc.contributor.authorVelásquez, A. A.
dc.contributor.authorMarín, C
dc.contributor.authorUrquijo, P
dc.contributor.departmentUniversidad EAFIT. Departamento de Ciencias Básicas
dc.contributor.researchgroupElectromagnetismo Aplicado (Gema)spa
dc.date.accessioned2021-03-23T21:39:34Z
dc.date.available2021-03-23T21:39:34Z
dc.date.issued2018-03-13
dc.description.abstractWe present the process of synthesis and characterization of magnetite-maghemite nanoparticles by the ball milling method. The particles were synthesized in a planetary ball mill equipped with vials and balls of tempered steel, employing dry and wet conditions. For dry milling, we employed microstructured analytical-grade hematite (a-Fe2O3), while for wet milling, we mixed hematite and deionized water. Milling products were characterized by X-ray diffraction, transmission electron microscopy, room temperature Mössbauer spectroscopy, vibrating sample magnetometry, and atomic absorption spectroscopy. The Mössbauer spectrum of the dry milling product was well fitted with two sextets of hematite, while the spectrum of the wet milling product was well fitted with three sextets of spinel phase. X-ray measurements confirmed the phases identified by Mössbauer spectroscopy in both milling conditions and a reduction in the crystallinity of the dry milling product. TEM measurements showed that the products of dry milling for 100 h and wet milling for 24 h consist of aggregates of nanoparticles distributed in size, with mean particle size of 10 and 15 nm, respectively. Magnetization measurements of the wet milling product showed little coercivity and a saturation magnetization around 69 emu g-1, characteristic of a nano-spinel system. Atomic absorption measurements showed that the chromium contamination in the wet milling product is approximately two orders of magnitude greater than that found in the dry milling product for 24 h, indicating that the material of the milling bodies, liberated more widely in wet conditions, plays an important role in the conversion hematite-spinel phase. © 2018, Springer Science+Business Media B.V., part of Springer Nature.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=7981
dc.identifier.doi10.1007/s11051-018-4166-x
dc.identifier.issn13880764spa
dc.identifier.issn1572896Xspa
dc.identifier.otherWOS;000427322700002
dc.identifier.otherSCOPUS;2-s2.0-85044008881
dc.identifier.urihttp://hdl.handle.net/10784/27177
dc.language.isoengeng
dc.publisherSpringer Netherlands
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85044008881&doi=10.1007%2fs11051-018-4166-x&partnerID=40&md5=426bf86e4e81107f5e7c878be8e5528b
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/1388-0764
dc.sourceJOURNAL OF NANOPARTICLE RESEARCH
dc.subject.keywordAbsorption spectroscopyeng
dc.subject.keywordDeionized watereng
dc.subject.keywordElectron microscopyeng
dc.subject.keywordHematiteeng
dc.subject.keywordHigh resolution transmission electron microscopyeng
dc.subject.keywordMagnetiteeng
dc.subject.keywordMagnetite nanoparticleseng
dc.subject.keywordMagnetizationeng
dc.subject.keywordMilling (machining)eng
dc.subject.keywordNanoparticleseng
dc.subject.keywordParticle sizeeng
dc.subject.keywordPlasma diagnosticseng
dc.subject.keywordSaturation magnetizationeng
dc.subject.keywordSynthesis (chemical)eng
dc.subject.keywordTransmission electron microscopyeng
dc.subject.keywordX ray diffractioneng
dc.subject.keywordAtomic absorption measurementseng
dc.subject.keywordAtomic absorption spectroscopyeng
dc.subject.keywordHigh-energy ball millingeng
dc.subject.keywordMaghemiteseng
dc.subject.keywordMagnetization measurementseng
dc.subject.keywordSsbauer spectroscopieseng
dc.subject.keywordSynthesis and characterizationseng
dc.subject.keywordVibrating sample magnetometryeng
dc.subject.keywordBall millingeng
dc.subject.keywordchromiumeng
dc.subject.keywordferric oxideeng
dc.subject.keywordmagnetite nanoparticleeng
dc.subject.keywordArticleeng
dc.subject.keywordatomic absorption spectrometryeng
dc.subject.keywordgrindingeng
dc.subject.keywordhysteresiseng
dc.subject.keywordmagnetometryeng
dc.subject.keywordMossbauer spectroscopyeng
dc.subject.keywordprecursoreng
dc.subject.keywordpriority journaleng
dc.subject.keywordroom temperatureeng
dc.subject.keywordsynthesiseng
dc.subject.keywordtransmission electron microscopyeng
dc.subject.keywordX ray diffractioneng
dc.titleSynthesis and characterization of magnetite-maghemite nanoparticles obtained by the high-energy ball milling methodeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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