Obtención de electrodos nanoestructurados de óxido de zinc vía anodizado para fotólisis de agua

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dc.contributor.advisorZea Ramírez, Hugo Ricardo
dc.contributor.advisorQuintero Cortés, Francisco Javier
dc.contributor.authorRomero Benavides, Luis Eduardo
dc.contributor.researchgroupGrupo de Investigación en Materiales, Catálisis y Medio Ambientespa
dc.date.accessioned2021-07-19T21:42:38Z
dc.date.available2021-07-19T21:42:38Z
dc.date.issued2021-03-22
dc.descriptionilustraciones, tablasspa
dc.description.abstractSe fabricó fotoelectrodos por anodización de zinc metálico en electrolitos de Na2CO3 y KHCO3 preparados en solventes mixtos de agua y etilenglicol, posteriormente recocidos a 300°C durante 1 hora. Este proceso produjo recubrimientos de ZnO nanoestructurados de diferente morfología y grosor de acuerdo con la conductividad del medio de anodización. Se estudió características de los recubrimientos por diferentes técnicas que incluyen microscopía electrónica SEM y TEM, difracción de rayos X, espectrofotometría para calcular el band gap óptico, sortometría para área BET y medidas electroquímicas en una celda PEC. La evaluación de los fotoelectrodos PEC arrojó eficiencias IPCE entre 5,4 y 20,4%. (Texto tomado de la fuente)spa
dc.description.abstractPhotoelectrodes were made by anodizing metallic zinc in electrolytes of Na2CO3 and KHCO3 prepared in mixed solvents of water and ethylene glycol, subsequently annealed at 300 °C for 1 hour. This process produced nanostructured ZnO coatings of different morphology and thickness according to the conductivity of the anodizing medium. Features of the coatings were studied by different techniques including SEM and TEM electron microscopy, X-ray diffraction, spectrophotometry to calculate optical band gap, sorptometry for BET surface area and electrochemical measurements in a PEC cell. The evaluation of the PEC photoelectrodes yielded IPCE efficiencies between 5.4 and 20.4%. (Text taken from source)eng
dc.description.degreelevelMaestríaspa
dc.description.degreenameMagíster en Ingeniería - Ingeniería Químicaspa
dc.description.researchareaCiencia de materialesspa
dc.format.extent101 páginasspa
dc.format.mimetypeapplication/pdfspa
dc.identifier.instnameUniversidad Nacional de Colombiaspa
dc.identifier.reponameRepositorio Institucional Universidad Nacional de Colombiaspa
dc.identifier.repourlhttps://repositorio.unal.edu.co/spa
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/79820
dc.language.isospaspa
dc.publisherUniversidad Nacional de Colombiaspa
dc.publisher.branchUniversidad Nacional de Colombia - Sede Bogotáspa
dc.publisher.departmentDepartamento de Ingeniería Química y Ambientalspa
dc.publisher.facultyFacultad de Ingenieríaspa
dc.publisher.placeBogotá, Colombiaspa
dc.publisher.programBogotá - Ingeniería - Maestría en Ingeniería - Ingeniería Químicaspa
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dc.rightsDerechos reservados al autor, 2021spa
dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.rights.licenseAtribución-CompartirIgual 4.0 Internacionalspa
dc.rights.urihttp://creativecommons.org/licenses/by-sa/4.0/spa
dc.subject.ddc540 - Química y ciencias afines::542 - Técnicas, procedimientos, aparatos, equipos, materialesspa
dc.subject.lembFotoquímica
dc.subject.lembPhotochemistry
dc.subject.lembConductividad eléctrica
dc.subject.lembElectric conductivity
dc.subject.proposalNanomaterialesspa
dc.subject.proposalÓxido de zincspa
dc.subject.proposalZnOspa
dc.subject.proposalFotocatálisisspa
dc.subject.proposalZinc Oxideeng
dc.subject.proposalNanostructureseng
dc.subject.proposalPhotocatalysteng
dc.subject.proposalPEC efficiencyeng
dc.subject.spinesFotolisis
dc.titleObtención de electrodos nanoestructurados de óxido de zinc vía anodizado para fotólisis de aguaspa
dc.title.translatedSynthesis of zinc oxide nanostructured electrodes for water splittingeng
dc.typeTrabajo de grado - Maestríaspa
dc.type.coarhttp://purl.org/coar/resource_type/c_bdccspa
dc.type.coarversionhttp://purl.org/coar/version/c_ab4af688f83e57aaspa
dc.type.contentTextspa
dc.type.driverinfo:eu-repo/semantics/masterThesisspa
dc.type.redcolhttp://purl.org/redcol/resource_type/TMspa
dc.type.versioninfo:eu-repo/semantics/acceptedVersionspa
dcterms.audienceGeneralspa
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2spa

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