Publicación:
PRELIMINARY STUDY OF THE PHOTODEGRADATION OF DYES USING AMORPHOUS FILMS OF ZNO-CUO OBTAINED BY PHOTOCHEMICAL DEPOSITION IN SOLID PHASE

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dc.creatorARTURO FELIPE FERNÁNDEZ PÉREZ
dc.creatorGERARDO ANDRÉS CABELLO GUZMÁN
dc.date2022
dc.date.accessioned2025-01-10T15:32:08Z
dc.date.available2025-01-10T15:32:08Z
dc.date.issued2022
dc.description.abstractHERE, WE PROPOSE AN ORIGINAL METHOD OF PHOTOCHEMICAL DEPOSITION FOR THE SYNTHESIS OF METAL OXIDES FROM COORDINATION COMPLEXES SENSITIVE TO UV LIGHT. THE METHOD CONSISTS OF THE SYNTHESIS OF ZINC OXIDE AMORPHOUS FILMS DOPED WITH DIFFERENT CONCENTRATIONS OF COPPER OXIDE FOLLOWED BY ANNEALING AT 600 °C. THE PHOTO-REACTIVITY OF THE SAMPLES WAS EVALUATED BY THE DECREASE OF THE FT-IR SPECTROSCOPY BANDS. THE FILMS WERE ANALYZED BY SCANNING ELECTRON MICROSCOPY (SEM-EDX) AND X-RAY DIFFRACTION (XRD) TO STUDY THEIR MORPHOLOGY AND STRUCTURES, RESPECTIVELY. THE RESULTS SHOW AN AMORPHOUS CHARACTERISTIC IN THE PHOTO-DEPOSITS. THE OPTICAL PROPERTIES SHOW A GRADUAL DECREASE OF BOTH THE OPTICAL BAND GAP AND THE LUMINESCENT EMISSIONS OF THE ZNO PHOTO-DEPOSITS WHEN CUO DOPING INCREASES. BOTH PROPERTIES ALLOW A SHIFT IN ABSORPTION TOWARDS THE VISIBLE AND A DECREASE IN THE RATE OF RECOMBINATION OF CHARGE CARRIERS. THE PHOTOCATALYTIC ACTIVITY WAS ANALYZED USING METHYL ORANGE AND METHYLENE BLUE AS POLLUTANTS UNDER A LAMP THAT EMULATES SOLAR ENERGY. THE RESULTS SHOW THAT THE PHOTOCATALYTIC ACTIVITY IS FAVORED BY THE INSERTION OF CUO; 46.6 AND 93.0% EFFICIENCY IN THE PHOTODEGRADATION OF METHYL ORANGE AND METHYLENE BLUE, RESPECTIVELY, WERE REACHED AT 1.0 MOL % OF CUO WITH RESPECT TO PURE ZNO. THESE DIFFERENCES IN DEGRADATION EFFICIENCY RESPOND TO THE CHEMICAL STABILITY OF THE DYES. FINALLY, THE USE OF APPROPRIATE SCAVENGERS SUGGESTS AN OXIDATIVE ROUTE IN THE DYE DEGRADATION MECHANISM.
dc.formatapplication/pdf
dc.identifier.doi10.1007/s11356-022-22703-8
dc.identifier.issn1614-7499
dc.identifier.issn0944-1344
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/12473
dc.languagespa
dc.publisherENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
dc.relation.uri10.1007/s11356-022-22703-8
dc.rightsPUBLICADA
dc.subjectPHOTOCHEMICAL DEPOSITION
dc.subjectPHOTOCATALYTIC PROPERTIES
dc.subjectMETHYLENE BLUE
dc.subjectMETHYL ORANGE
dc.subjectAMORPHOUS FLMS
dc.titlePRELIMINARY STUDY OF THE PHOTODEGRADATION OF DYES USING AMORPHOUS FILMS OF ZNO-CUO OBTAINED BY PHOTOCHEMICAL DEPOSITION IN SOLID PHASE
dc.title.alternativeESTUDIO PRELIMINAR DE LA FOTODEGRADACIÓN DE COLORANTES MEDIANTE PELÍCULAS AMORFAS DE ZNO-CUO OBTENIDAS POR DEPOSICIÓN FOTOQUÍMICA EN FASE SÓLIDA
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE FISICA
ubb.Otra ReparticionDEPARTAMENTO DE CIENCIAS BASICAS
ubb.SedeCONCEPCIÓN
ubb.SedeCHILLÁN
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