Publicación:
CuO dopado con cobalto: caracterización morfológica, vibracional, estructural, óptica y magnética

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dc.audience
dc.contributor.advisorBeltrán Jiménez, Jailes Joaquín
dc.contributor.authorOsorno Bolívar, Carlos Eduardo
dc.contributor.educationalvalidatorBeltrán Jiménez Jailes Joaquín
dc.contributor.jurySánchez Pacheco, Luis Carlos
dc.contributor.juryGarcía Negrete, Carlos
dc.date.accessioned2025-02-07T13:25:28Z
dc.date.available2025-02-07T13:25:28Z
dc.date.issued2025-02-05
dc.description.abstractEl CuO es un material semiconductor tipo p con propiedades destacadas como una estrecha banda prohibida (~1.2 eV, en bulk), alta conductividad eléctrica y térmica, estabilidad química y aplicaciones multifuncionales que van desde la catálisis hasta sensores y espintrónica. El potencial de sus aplicaciones puede mejorarse mediante el dopaje con metales de transición, lo que permite modificar su estructura cristalina, propiedades ópticas y comportamiento magnético. En este trabajo de grado se estudia los efectos del dopaje con Co en nanopartículas de CuO, investigando de manera integral sus propiedades morfológicas, vibracionales, estructurales, ópticas y magnéticas. La síntesis de las nanopartículas de CuO y Cu_(1-x) Co_x O con diferentes concentraciones de Co (x = 0.01 a 0.08), se realizó mediante el método de co-precipitación asistida por microondas. Los resultados de FTIR-ATR, RAMAN y DRX indicaron que el dopante se introdujo homogéneamente en la matriz del CuO hasta x = 0.05. Los resultados por difracción de rayos X confirmaron la formación de la fase monoclínica del CuO y evidenciaron la incorporación del Co en su red cristalina, formando una solución sólida sin presencia de fases impuras en las muestras de concentración menor igual al 6 % mol. Adicionalmente, las técnicas de microscopía electrónica (FIB-FESEM y espectroscopía Uv-Vis) revelaron un cambio en la morfología de 2D para la muestra pura y 3D, para la muestra con 5 % mol del dopante.spa
dc.description.abstractCuO is a p-type semiconductor material with remarkable properties such as a narrow bandgap (~1.2 eV, in bulk), high electrical and thermal conductivity, chemical stability and multifunctional applications ranging from catalysis to sensors and spintronics. The potential of their applications can be improved through the doping with transition metals, by modifiying their crystalline structure, optical properties and magnetic behaviour. In this work, the effects of Co doping on CuO nanoparticles are studied, investigating their morphological, vibrational, structural, optical and magnetic properties in a comprehensive way. The synthesis of CuO and Cu1-xCoxO nanoparticles with different Co concentrations (x = 0.01 to 0.08) was carried out by microwave-assisted co-precipitation method. FTIR-ATR, RAMAN and XRD results indicated that the dopant was homogeneously introduced into the CuO matrix up to x = 0.05. X-ray diffraction results confirmed the formation of the monoclinic phase of CuO and evidenced the incorporation of Co in its crystal lattice of the semiconductor, forming a solid solution without the presence of impurity phases in the samples with concentrations lower than 6 % mol. Additionally, FIB-FESEM and Uv-Vis spectroscopy revealed a change in morphology from 2D for the pure sample to 3D for the sample with 5 % mol of the dopant.eng
dc.description.degreelevelPregrado
dc.description.degreenameQuímico(a)
dc.description.modalityTrabajos de Investigación y/o Extensión
dc.description.tableofcontentsAGRADECIMIENTOSspa
dc.description.tableofcontentsRESUMENspa
dc.description.tableofcontentsLISTA DE FIGURASspa
dc.description.tableofcontentsLISTA DE ABREVIACIONESspa
dc.description.tableofcontentsINTRODUCCIÓNspa
dc.description.tableofcontentsCAPÍTULO 1 FUNDAMENTACIÓN TEÓRICAspa
dc.description.tableofcontents1. MARCO TEÓRICOspa
dc.description.tableofcontents1.1. Semiconducotres magnéticamente diluidosspa
dc.description.tableofcontents1.2. Óxidos semiconductores magnéticamente diluidos (ODMS)spa
dc.description.tableofcontents1.3. CuOspa
dc.description.tableofcontents1.3.1. Propiedades físicas y químicasspa
dc.description.tableofcontents1.3.2. Morfología, formación y yacimientosspa
dc.description.tableofcontents1.3.3. Estructura cristalinaspa
dc.description.tableofcontents1.3.4. Propiedades ópticasspa
dc.description.tableofcontents1.3.5. Propiedaes magnéticasspa
dc.description.tableofcontents1.3.6. Aplicacionesspa
dc.description.tableofcontentsCAPÍTULO 2 SÍNTESIS ASISTIDA POR MICROONDAS Y TÉCNICAS DE CARACTERIZACIÓNspa
dc.description.tableofcontents2. SÍNTESIS ASISTIDA POR MICROONDASspa
dc.description.tableofcontents2.1. Síntesis por microondasspa
dc.description.tableofcontents2.1.1. Química de microondas y efectos de las microondasspa
dc.description.tableofcontents2.1.2. Aceleraciones de velocidad por calentamiento con microondasspa
dc.description.tableofcontents2.1.3. Preparación asistida por microondas en distintos disolventesspa
dc.description.tableofcontents2.1.4. Preparación asistida por microondas en un sistema de reacción abiertospa
dc.description.tableofcontents2.1.5. Preparación de nanoestructuras en solución acuosa asistida por microondasspa
dc.description.tableofcontents2.2. Acetatos de metales de transición como precursoresspa
dc.description.tableofcontents2.3. TÉCNICAS DE CARACTERIZACIÓNspa
dc.description.tableofcontents2.3.1. Microscopía de barrido electrónico con espectroscopía de dispersión de energía (SEM-EDS) y Microscopía electrónica de barrido de emisión de campo dual beam (FIB-FESEM)spa
dc.description.tableofcontents2.4. Espectroscopía infrarroja con transformada de Fourier (FTIR)spa
dc.description.tableofcontents2.4.1. Tipos de vibraciones molecularesspa
dc.description.tableofcontents2.4.2. Espectrometría de reflectancia atenuada total (ATR)spa
dc.description.tableofcontents2.5. Espectroscopía RAMANspa
dc.description.tableofcontents2.5.1. Mecanismo de la dispersión Raman y Rayleighspa
dc.description.tableofcontents2.5.2. Intensidad de los picos Raman normalesspa
dc.description.tableofcontents2.5.3. Dispersión Rayleigh, Stok y Antistokspa
dc.description.tableofcontents2.6. Difracción de rayos X (DRX)spa
dc.description.tableofcontents2.6.1. Ley de Braggspa
dc.description.tableofcontents2.6.2. Método de refinamiento Rietveldspa
dc.description.tableofcontents2.7. Espectroscopía UV-Visspa
dc.description.tableofcontents2.7.1. Origen de los espectros UV-Visspa
dc.description.tableofcontents2.7.2. Transmitancia y absorbanciaspa
dc.description.tableofcontents2.7.3. Ley de Beerspa
dc.description.tableofcontents2.8. Uv-relectancia difusa (UV-DR)spa
dc.description.tableofcontents2.9. Medidas magnéticasspa
dc.description.tableofcontents2.9.1. Magnetrómetro de muestra vibrantespa
dc.description.tableofcontents2.10. Estado del artespa
dc.description.tableofcontentsCAPÍTULO 3 PREPARACIÓN Y CARACTERIZACIÓN DE LAS MUESTRASspa
dc.description.tableofcontents3. Síntesis de NPs de CuO y CuO dopadas con Co (x = 0.01, 0.02, 0.03, 0.04, 0.05 y 0.08)spa
dc.description.tableofcontents3.1. Reactivos y equiposspa
dc.description.tableofcontents3.2. Cálculos estequiométricosspa
dc.description.tableofcontents3.3. Procedimiento experimentalspa
dc.description.tableofcontents3.3.1. Masas pesadas experimentalmente, tiempo de exposición y porcentaje de rendimiento de cada reacciónspa
dc.description.tableofcontents3.4. Caracterizaciónspa
dc.description.tableofcontents3.4.1. Microscopio electrónico de barrido con espectroscopía de rayos X de energía dispersiva (SEM-EDS)spa
dc.description.tableofcontents3.4.2. Microscopía electrónica de emisión de campo dual beam (FIB – FESEM)spa
dc.description.tableofcontents3.4.3. Espectroscopía infrarroja con transformada de Fourier y refelctancia total atenuada (FTIR-ATR)spa
dc.description.tableofcontents3.4.4. Espectroscopía RAMANspa
dc.description.tableofcontents3.4.5. Difracción de rayos X (DRX)spa
dc.description.tableofcontents3.4.6. UV-Visible (UV-Vis)spa
dc.description.tableofcontents3.4.7. UV-reflectancia difusa (UV-DR)spa
dc.description.tableofcontents3.4.8. Magnetometría de muestra vibrante (VMS)spa
dc.description.tableofcontentsCAPÍTULO 4 OBJETIVOSspa
dc.description.tableofcontents4. Objetivosspa
dc.description.tableofcontents4.1. Objetivo generalspa
dc.description.tableofcontents4.2. Objetivos específicosspa
dc.description.tableofcontentsCAPÍTULO 5 RESULTADOS Y DISCUSIÓNspa
dc.description.tableofcontents5. RESULTADOS Y DISCUSIÓNspa
dc.description.tableofcontents5.1. Microscopía electrónica de barrido con espectroscopía de rayos X de energía dispersiva (SEM-EDS)spa
dc.description.tableofcontents5.2. Microscopía electrónica de emisión de campo dual beam (FIB – FESEM)spa
dc.description.tableofcontents5.3. Propiedades vibracionalesspa
dc.description.tableofcontents5.3.1. Espectroscopía infrarroja con transformada de Fourier (FTIR)spa
dc.description.tableofcontents5.3.2. Espectroscopía RAMANspa
dc.description.tableofcontents5.4. Difracción de rayos Xspa
dc.description.tableofcontents5.4.1. Patrones de difracción de rayos X e identificación de fasesspa
dc.description.tableofcontents5.4.2. Patrones de difracción de rayos X ajustadosspa
dc.description.tableofcontents5.4.3. Parámetros de redspa
dc.description.tableofcontents5.5. Propiedades ópticasspa
dc.description.tableofcontents5.5.1. Espectroscopía UV-visspa
dc.description.tableofcontents5.5.2. UV- Reflectancia difusaspa
dc.description.tableofcontents5.6. Medidas magnéticasspa
dc.description.tableofcontents6. CONCLUSIONESspa
dc.description.tableofcontents7. TRABAJO A FUTUROspa
dc.description.tableofcontents8. BIBLIOGRAFÍAspa
dc.format.mimetypeapplication/pdf
dc.identifier.instnameUniversidad de Córdoba
dc.identifier.reponameRepositorio Institucional Unicórdoba
dc.identifier.repourlhttps://repositorio.unicordoba.edu.co
dc.identifier.urihttps://repositorio.unicordoba.edu.co/handle/ucordoba/9029
dc.language.isospa
dc.publisherUniversidad de Córdoba
dc.publisher.facultyFacultad de Ciencias Básicas
dc.publisher.placeMontería, Córdoba, Colombia
dc.publisher.programQuímica
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dc.rightsCopyright Universidad de Córdoba, 2025
dc.rights.accessrightsinfo:eu-repo/semantics/embargoedAccess
dc.rights.coarhttp://purl.org/coar/access_right/c_f1cf
dc.rights.licenseAtribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.keywordsCu1-xCoxO (0.00<x<0.08)
dc.subject.keywordsMicrowave assisted synthesis
dc.subject.keywordsCobalt doping influence
dc.subject.keywordsBand gap
dc.subject.keywordsFerromagnetism at room temperature
dc.subject.proposalCu1-xCoxO (0.00<x<0.08)
dc.subject.proposalSíntesis asistida por microondas
dc.subject.proposalInfluencia del dopaje con Co
dc.subject.proposalNanoláminas
dc.subject.proposalBrecha de banda
dc.subject.proposalFerromagnetismo a temperatura ambiente
dc.titleCuO dopado con cobalto: caracterización morfológica, vibracional, estructural, óptica y magnéticaspa
dc.typeTrabajo de grado - Pregrado
dc.type.coarhttp://purl.org/coar/resource_type/c_7a1f
dc.type.coarversionhttp://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.contentText
dc.type.driverinfo:eu-repo/semantics/bachelorThesis
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
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