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dc.contributor.authorBautista-Ruiz, Jorge
dc.contributor.authorRincón Joya, Miryam
dc.contributor.authorRaba Paez, Angela Mercedes
dc.date.accessioned2021-11-06T14:25:14Z
dc.date.available2021-11-06T14:25:14Z
dc.date.issued2016-10-10
dc.identifier.urihttp://repositorio.ufps.edu.co/handle/ufps/697
dc.description.abstractPowders Nb2 O5 were prepared by two different synthesis method, Sol-Gel and polymeric precursors (Pechini). In the Pechini method before adding the citric acid in the process, four different solutions were used to get the samples. For Sol-gel method, two different processes were also used in obtaining powders. The precursor was completely solubilized in ethanol and then hydrolyzed with ammonia and water. The calcination of the samples was between 500 and 750°C. The resulting powders were characterized by Scanning Electron Microscopy (SEM), Brunauer, Emmett and Teller (BET) surface area measurements, UV-visible and Raman spectroscopy. The formation of T−Nb2 O5 orthorhombic took place upon calcination at 7500C. Crystallite sizes were determined using the Scherrer method which resulted in an uniformed size of about 25 − 65nm. Ultraviolet-Visible diffuse reflectance spectroscopy indicated a variation in the optical band gap values (3.32-3.40 eV) in crystal growth process. The Raman vibrational modes indicate the presence of the orthorhombic phase of the material.eng
dc.format.mimetypeapplication/pdfspa
dc.language.isoengspa
dc.publisherMaterials Researchspa
dc.relation.ispartofMaterials Research
dc.rightsThis is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.eng
dc.sourcehttps://www.scielo.br/j/mr/a/n4bgPM5KYHVtGrKp3CktDdF/?lang=en#spa
dc.titleSynthesis and Structural Properties of Niobium Pentoxide Powders: A Comparative Study of the Growth Processeng
dc.typeArtículo de revistaspa
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dc.identifier.doihttps://doi.org/10.1590/1980-5373-MR-2015-0733
dc.publisher.placeBrasilspa
dc.relation.citationeditionVol.19 No.6.(2016)spa
dc.relation.citationendpage1387spa
dc.relation.citationissue6 (2016)spa
dc.relation.citationstartpage1381spa
dc.relation.citationvolume19spa
dc.relation.citesRaba, A. M., Bautista-Ruíz, J., & Joya, M. R. (2016). Synthesis and structural properties of niobium pentoxide powders: a comparative study of the growth process. Materials Research, 19, 1381-1387.
dc.relation.ispartofjournalMaterials Researchspa
dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.rights.creativecommonsAtribución 4.0 Internacional (CC BY 4.0)spa
dc.subject.proposalcomparative studyeng
dc.subject.proposalsol-geleng
dc.subject.proposalUv-Viseng
dc.subject.proposalInelastic light scatteringeng
dc.subject.proposalNb2 O5eng
dc.type.coarhttp://purl.org/coar/resource_type/c_6501spa
dc.type.contentTextspa
dc.type.driverinfo:eu-repo/semantics/articlespa
dc.type.redcolhttp://purl.org/redcol/resource_type/ARTspa
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2spa
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85spa
dc.type.versioninfo:eu-repo/semantics/publishedVersionspa


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