Microwave-assisted synthesis of goethite nanoparticles used for removal of Cr(VI) from aqueous solution

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dc.contributor.authorNguyen, Dính Vinhcs
dc.contributor.authorKynický, Jindřichcs
dc.contributor.authorAmbrožová, Pavlínacs
dc.contributor.authorAdam, Vojtěchcs
dc.coverage.issue7cs
dc.coverage.volume10cs
dc.date.issued2017-07-01cs
dc.description.abstractThe microwave-assisted synthesis of goethite nanoparticles has been studied. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), differential thermal analysis (DTA) and Brunauer-Emmett-Teller (BET) method. Goethite rod-like nanoparticles have been successfully synthesized in 10 min of microwave treating at 100 degrees C. Particle size is in the range from 30 to 60 nm in width and from 200 to 350 nm in length. BET analysis indicated that the surface area of the product is 158.31 m(2)g(-1). The feasibility of Cr(VI) removal fromaqueous solution depends on the pH of the solution and contact time. The maximum adsorptionis reached at pH 4.0 and 540 min of contact time. The adsorption kinetics was analyzedby the pseudo-first-and second-order models and the results reveal that the adsorption process obeys the pseudo-second-order model. The adsorption data were fitted well with the Langmuir adsorption isotherm.en
dc.formattextcs
dc.format.extent1-10cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMaterials . 2017, vol. 10, issue 7, p. 1-10.en
dc.identifier.doi10.3390/ma10070783cs
dc.identifier.issn1996-1944cs
dc.identifier.orcid0000-0001-9193-8990cs
dc.identifier.orcid0000-0002-8527-286Xcs
dc.identifier.other140201cs
dc.identifier.researcheridC-1091-2014cs
dc.identifier.researcheridD-7686-2012cs
dc.identifier.urihttp://hdl.handle.net/11012/70088
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofMaterialscs
dc.relation.urihttps://www.mdpi.com/1996-1944/10/7/783cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1996-1944/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectgoethite nanoparticlesen
dc.subjectmicrowaveen
dc.subjectCr(VI) removalen
dc.titleMicrowave-assisted synthesis of goethite nanoparticles used for removal of Cr(VI) from aqueous solutionen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-140201en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:50:23en
sync.item.modts2025.01.17 18:37:28en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Chytré nanonástrojecs
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