Evaluación del uso de nanomateriales basados en hierro y/o cobre para promover la degradación de los antihipertensivos Losartán y Valsartán.

ilustraciones, diagramas

Autores:
Monje Hernández, Dany Santiago
Tipo de recurso:
Fecha de publicación:
2021
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
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oai:repositorio.unal.edu.co:unal/80052
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/80052
https://repositorio.unal.edu.co/
Palabra clave:
540 - Química y ciencias afines::546 - Química inorgánica
Óxido de hierro
Agentes antihipertensivos
Nanomateriales
Nanotecnología
Síntesis verde
Procesos de oxidación avanzada
Contaminantes emergentes
Foto-Fenton
Fotocatálisis heterogénea
Nanomaterials
Nanotechnology
Green synthesis
Advanced oxidation processes
Emerging pollutants
Photo-Fenton
Heterogeneous photocatalysis
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openAccess
License
Atribución-NoComercial-SinDerivadas 4.0 Internacional
id UNACIONAL2_c28a3b6504ea7dc06ecff8660c3cfb4d
oai_identifier_str oai:repositorio.unal.edu.co:unal/80052
network_acronym_str UNACIONAL2
network_name_str Universidad Nacional de Colombia
repository_id_str
dc.title.spa.fl_str_mv Evaluación del uso de nanomateriales basados en hierro y/o cobre para promover la degradación de los antihipertensivos Losartán y Valsartán.
dc.title.translated.eng.fl_str_mv Evaluation of the use of iron and/or copper-based nanomaterials to promote the degradation of the antihypertensive Losartan and Valsartan
title Evaluación del uso de nanomateriales basados en hierro y/o cobre para promover la degradación de los antihipertensivos Losartán y Valsartán.
spellingShingle Evaluación del uso de nanomateriales basados en hierro y/o cobre para promover la degradación de los antihipertensivos Losartán y Valsartán.
540 - Química y ciencias afines::546 - Química inorgánica
Óxido de hierro
Agentes antihipertensivos
Nanomateriales
Nanotecnología
Síntesis verde
Procesos de oxidación avanzada
Contaminantes emergentes
Foto-Fenton
Fotocatálisis heterogénea
Nanomaterials
Nanotechnology
Green synthesis
Advanced oxidation processes
Emerging pollutants
Photo-Fenton
Heterogeneous photocatalysis
title_short Evaluación del uso de nanomateriales basados en hierro y/o cobre para promover la degradación de los antihipertensivos Losartán y Valsartán.
title_full Evaluación del uso de nanomateriales basados en hierro y/o cobre para promover la degradación de los antihipertensivos Losartán y Valsartán.
title_fullStr Evaluación del uso de nanomateriales basados en hierro y/o cobre para promover la degradación de los antihipertensivos Losartán y Valsartán.
title_full_unstemmed Evaluación del uso de nanomateriales basados en hierro y/o cobre para promover la degradación de los antihipertensivos Losartán y Valsartán.
title_sort Evaluación del uso de nanomateriales basados en hierro y/o cobre para promover la degradación de los antihipertensivos Losartán y Valsartán.
dc.creator.fl_str_mv Monje Hernández, Dany Santiago
dc.contributor.advisor.none.fl_str_mv Valencia Uribe, Gloria Cristina
Mercado Castro, Donaldo Fabio
dc.contributor.author.none.fl_str_mv Monje Hernández, Dany Santiago
dc.contributor.researchgroup.spa.fl_str_mv Aplicaciones en Fotoquímica (GIAFOT)
dc.subject.ddc.spa.fl_str_mv 540 - Química y ciencias afines::546 - Química inorgánica
topic 540 - Química y ciencias afines::546 - Química inorgánica
Óxido de hierro
Agentes antihipertensivos
Nanomateriales
Nanotecnología
Síntesis verde
Procesos de oxidación avanzada
Contaminantes emergentes
Foto-Fenton
Fotocatálisis heterogénea
Nanomaterials
Nanotechnology
Green synthesis
Advanced oxidation processes
Emerging pollutants
Photo-Fenton
Heterogeneous photocatalysis
dc.subject.lemb.none.fl_str_mv Óxido de hierro
Agentes antihipertensivos
dc.subject.proposal.spa.fl_str_mv Nanomateriales
Nanotecnología
Síntesis verde
Procesos de oxidación avanzada
Contaminantes emergentes
Foto-Fenton
Fotocatálisis heterogénea
dc.subject.proposal.eng.fl_str_mv Nanomaterials
Nanotechnology
Green synthesis
Advanced oxidation processes
Emerging pollutants
Photo-Fenton
Heterogeneous photocatalysis
description ilustraciones, diagramas
publishDate 2021
dc.date.accessioned.none.fl_str_mv 2021-08-30T16:14:45Z
dc.date.available.none.fl_str_mv 2021-08-30T16:14:45Z
dc.date.issued.none.fl_str_mv 2021-08-27
dc.type.spa.fl_str_mv Trabajo de grado - Maestría
dc.type.driver.spa.fl_str_mv info:eu-repo/semantics/masterThesis
dc.type.version.spa.fl_str_mv info:eu-repo/semantics/acceptedVersion
dc.type.content.spa.fl_str_mv Text
dc.type.redcol.spa.fl_str_mv http://purl.org/redcol/resource_type/TM
status_str acceptedVersion
dc.identifier.uri.none.fl_str_mv https://repositorio.unal.edu.co/handle/unal/80052
dc.identifier.instname.spa.fl_str_mv Universidad Nacional de Colombia
dc.identifier.reponame.spa.fl_str_mv Repositorio Institucional Universidad Nacional de Colombia
dc.identifier.repourl.spa.fl_str_mv https://repositorio.unal.edu.co/
url https://repositorio.unal.edu.co/handle/unal/80052
https://repositorio.unal.edu.co/
identifier_str_mv Universidad Nacional de Colombia
Repositorio Institucional Universidad Nacional de Colombia
dc.language.iso.spa.fl_str_mv spa
language spa
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dc.publisher.spa.fl_str_mv Universidad Nacional de Colombia - Sede Medellín
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dc.publisher.department.spa.fl_str_mv Escuela de química
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spelling Atribución-NoComercial-SinDerivadas 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Valencia Uribe, Gloria Cristinab5bb0453eb709f67b76c97ea6c2e768fMercado Castro, Donaldo Fabio8e9fd299b572273ca3e88497d60a9407600Monje Hernández, Dany Santiagoa64dabf96fa72fa48335757f17d8ef66Aplicaciones en Fotoquímica (GIAFOT)2021-08-30T16:14:45Z2021-08-30T16:14:45Z2021-08-27https://repositorio.unal.edu.co/handle/unal/80052Universidad Nacional de ColombiaRepositorio Institucional Universidad Nacional de Colombiahttps://repositorio.unal.edu.co/ilustraciones, diagramasEn esta investigación se sintetizaron distintos nanomateriales basados en óxidos de hierro por rutas sintéticas verdes, y se evaluó su actividad catalítica en la remoción de contaminantes emergentes. Siete nanopartículas bimetálica de óxidos de Cu/Fe fueron sintetizadas usando extracto de yerba mate como agente precipitante y estabilizante superficial, variando la relación molar de Cu/Fe. La caracterización por TEM, DRX, TGA-Ms, Potencial Z, FTIR y espectroscopia de adsorción atómica indicó que todos los materiales poseen una morfología esférica con estructura tipo core-shell con las fases de óxidos metálicos en el núcleo y una cobertura orgánica con un alto porcentaje de materia orgánica. Se encontró que la fase orgánica juega un papel fundamental en la actividad fotocatalítica de los sólidos durante el proceso Foto-Fenton a pH cercano a la neutralidad, en el cual se evidenció la foto-lixiviación de Fe y un mecanismo fue propuesto. Todos los materiales mostraron actividad catalítica en la eliminación de naranja de metilo, lográndose decoloraciones superiores a 96% en dos horas bajo irradiación UV a 375 nm. Dos nanopartículas de puntos de carbono fueron sintetizados empleando el extracto de yerba mate como precursor de síntesis mediante digestión ácida con H2SO4 o HNO3 para promover el dopaje superficial con S y N respectivamente. Posteriormente se evaluó la funcionalización de nanopartículas a través de dos rutas sintéticas con los puntos de carbono dopados. La caracterización por TEM, DRX, TGA-Ms, Potencial Z, DLS, FTIR y RAMAN, indicó que todos los materiales poseen una morfología esférica con estructura tipo core-shell con la fase de magnetita en el núcleo y puntos de carbono dopados en la superficie. Se encontró que la presencia de puntos de carbono afecta las propiedades fotocatalíticas de los materiales durante el proceso Foto-Fenton, a través de la generación de especies reactivas de oxígeno y promoviendo el ciclo catalítico del Fe2+; en consecuencia un mecanismo fue propuesto. Todos los materiales mostraron actividad catalítica en la eliminación del naranja de metilo, lográndose decoloraciones superiores al 98% en 7 horas bajo irradiación visible entre 400 – 750 nm. Finalmente, se obtuvo g-C3N4 a partir de urea por una ruta de polimerización térmica y posteriormente dopado con K. Se sintetizaron 4 nanocompositos de magnetita con g-C3N4 y 4 con g-C3N4 después del dopaje con K, variando las cantidades de Fe con relación a la concentración necesaria para formar una monocapa a partir del modelo de isotermas de Langmuir. La caracterización por TEM, DRX, TGA-Ms, Potencial Z, DLS, FTIR y espectroscopia UV/Vis indicó que todos los materiales habían sido modificados satisfactoriamente y se encontraban en escalas nanométrica. Se encontró que el dopaje con K y la concentración de Fe empleada afectan las propiedades fotocatalíticas de los materiales y en consecuencia un mecanismo fue propuesto. Se evaluó la fotoestabilidad y foto-generación de oxígeno molecular singlete de Losartán y Valsartán, encontrándose que ambos compuestos son altamente estables a diferentes condiciones de irradiación, y que no actúan como fotosensibilizadores de oxígeno singlete. Todos los materiales mostraron actividad catalítica en la eliminación del Losartán y Valsartán, lográndose degradaciones superiores al 95% en 3 horas bajo irradiación visible entre 400 – 750 nm. Igualmente los materiales probaron ser capaces de eliminar el contaminante en condiciones de irradiación con luz solar en una matriz de agua corriente. Estos resultados demuestran el potencial fotocatalítico de los nanomateriales basados en hierro y plantea alternativas de síntesis eficientes siguiendo rutas verdes. (Texto tomado de la fuente)In this work several iron oxide based nanomaterials were synthesized by green synthesis routes, evaluating their catalytic activity in the removal of emerging pollutants. Seven bimetallic Cu/Fe oxide nanoparticles were synthesized using yerba mate dry leaf extract as precipitant and capping agent, varying the Cu/Fe molar ratio. A thorough characterization of the particles by TEM, XRD, TGA-MS, Z-potential, FTIR, and atomic absorption-spectrometry AA indicates that all materials have spheric-like morphology with a core-shell structure with the metal oxide phases in the core and an organic shell with a high percentage of organic matter. This organic matter is proposed to play an important role in the solids' photocatalytic activity in a photo-Fenton reaction, in which iron photoleaching was elucidated, and a mechanism was proposed. All materials showed catalytic activity in the methyl orange elimination, achieving discolorations up to 96% in two hours under UV irradiation at 375 nm. Two carbon dot nanoparticles were synthesized using yerba mate extract as a synthesis precursor by an acid digestion route with H2SO4 or HNO3 to promote the surface doping with S and N respectively. Subsequently, the nanoparticles functionalization through two synthesis routes with de doped carbon dots was evaluated. The characterization by TEM, XRD, TGA-Ms, Z Potential, DLS, FTIR and Raman, indicated that all the materials are in nanométrica scale and have a spherical morphology with a core-shell structure in which the magnetite as the core and the doped carbon dots in the surface. Is was found that the carbon dots affects the photocatalytic behavior of the nanomaterials in the photo-Fenton process through the generation of reactive oxygen species and enhancing the catalyst XII Abstract Fe2+ regeneration; as consequence a mechanism was proposed. All the materials showed catalytic activity in the methyl orange elimination, reaching discolorations over 98% in 7 hours under visible radiation between 400-750 nm. Finally, g-C3N4 was obtained from urea by a thermal polymerization route and subsequently doped with K. Four magnetic nanocomposites were synthesized with gC3N4 and four with g-C3N4 after doping with K, varying the Fe amounts in relation with the necessary concentration to form a monolayer from the Langmuir isotherm model. The characterization by TEM, XRD, TGA-Ms, Z Potential, DLS, FTIR, Raman and UV spectroscopy, indicate that all the materials had been satisfactorily modified and were on nanometric scale. It was found that the K doping and the iron concentration used, affect the photocatalytic behavior of the materials and in consequence a mechanism was proposed. It was evaluated the photostability and photogeneration of singlet molecular oxygen of Losartan and Valsartan, finding that both compounds are highly stable under different irradiation conditions, and don‟t act as photosensitizers of singlet oxygen. All the materials show catalytic activity in the elimination of Losartan and Valsartan, reaching degradations over 95% in 3 hours under visible irradiation between 400 – 750 nm. Finally, the materials are able to eliminate the pollutants with solar irradiation conditions, using a simulated current water matrix.ColcienciasMaestríaMagister en Ciencias - QuímicasSíntesis verde de diversos nanomateriales ópticamente activosxviii, 168 páginasapplication/pdfspaUniversidad Nacional de Colombia - Sede MedellínMedellín - Ciencias - Maestría en Ciencias - QuímicaEscuela de químicaFacultad de CienciasMedellínUniversidad Nacional de Colombia - Sede Medellín540 - Química y ciencias afines::546 - Química inorgánicaÓxido de hierroAgentes antihipertensivosNanomaterialesNanotecnologíaSíntesis verdeProcesos de oxidación avanzadaContaminantes emergentesFoto-FentonFotocatálisis heterogéneaNanomaterialsNanotechnologyGreen synthesisAdvanced oxidation processesEmerging pollutantsPhoto-FentonHeterogeneous photocatalysisEvaluación del uso de nanomateriales basados en hierro y/o cobre para promover la degradación de los antihipertensivos Losartán y Valsartán.Evaluation of the use of iron and/or copper-based nanomaterials to promote the degradation of the antihypertensive Losartan and ValsartanTrabajo de grado - Maestríainfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/acceptedVersionTexthttp://purl.org/redcol/resource_type/TM[1] UNICEF, WHO, State of the World’s SANITATION, 2020. 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Kochevar, Rose Bengal binding to collagen and tissue photobonding, ACS Omega. 2 (2017) 6646–6657. https://doi.org/10.1021/acsomega.7b00675.EspecializadaLICENSElicense.txtlicense.txttext/plain; charset=utf-83964https://repositorio.unal.edu.co/bitstream/unal/80052/1/license.txtcccfe52f796b7c63423298c2d3365fc6MD51ORIGINAL1117533322.2021.pdf1117533322.2021.pdfTesis de Maestría en Ciencias - Químicaapplication/pdf6418552https://repositorio.unal.edu.co/bitstream/unal/80052/2/1117533322.2021.pdf9ba7b1bf62ef60e1f20a2cf05afc13e0MD52THUMBNAIL1117533322.2021.pdf.jpg1117533322.2021.pdf.jpgGenerated Thumbnailimage/jpeg5659https://repositorio.unal.edu.co/bitstream/unal/80052/3/1117533322.2021.pdf.jpga36e40e921884b832904bf854567d7a6MD53unal/80052oai:repositorio.unal.edu.co:unal/800522024-07-28 01:13:06.614Repositorio Institucional Universidad Nacional de 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GVyZWNob3MgZGUgYXV0b3IgcXVlIGNvbmxsZXZlIGxhIGRpc3RyaWJ1Y2nDs24gZGUgZXN0b3MgYXJjaGl2b3MgeSBtZXRhZGF0b3MuCkFsIGhhY2VyIGNsaWMgZW4gZWwgc2lndWllbnRlIGJvdMOzbiwgdXN0ZWQgaW5kaWNhIHF1ZSBlc3TDoSBkZSBhY3VlcmRvIGNvbiBlc3RvcyB0w6lybWlub3MuCgpVTklWRVJTSURBRCBOQUNJT05BTCBERSBDT0xPTUJJQSAtIMOabHRpbWEgbW9kaWZpY2FjacOzbiAyNy8yMC8yMDIwCg==

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