0000000000026363

AUTHOR

Patricia Batista-grau

showing 5 related works from this author

Formation of ZnO nanowires by anodization under hydrodynamic conditions for photoelectrochemical water splitting

2020

[EN] The present work studies the influence of hydrodynamic conditions (from 0 to 5000 rpm) during Zn anodization process on the morphology, structure and photoelectrocatalytic behavior of ZnO nanostructures. For this purpose, analysis with Confocal Laser-Raman Spectroscopy, Field Emission Scanning Electron Microscope (FE-SEM) and photoelectrochemical water splitting tests were performed. This investigation reveals that hydrodynamic conditions during anodization promoted the formation of ordered ZnO nanowires along the surface that greatly enhance its stability and increases the photocurrent density response for water splitting in a 159% at the 5000 rpm electrode rotation speed.

NanostructureMaterials scienceMorphology (linguistics)Photoelectrocatalyst02 engineering and technology010402 general chemistry01 natural sciencesINGENIERIA QUIMICAZinc oxideMaterials ChemistryWater splittingSpectroscopyPhotocurrentAnodizingHidrodinàmicaSurfaces and InterfacesGeneral Chemistry021001 nanoscience & nanotechnologyCondensed Matter Physics0104 chemical sciencesSurfaces Coatings and FilmsField emission microscopyElectroquímicaHydrodynamic conditionsBicarbonate07.- Asegurar el acceso a energías asequibles fiables sostenibles y modernas para todosChemical engineeringElectrodeWater splittingAnodization0210 nano-technology
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Investigación en el aula: evaluación de la metodología de aprendizaje basado en problemas en la asignatura de Corrosión

2020

[ES] La metodología de Aprendizaje Basado en Problemas (ABP) se introdujo por primera vez en un curso de Corrosión del Master de Ingeniería Química de la Universitat Politècnica de València, durante el curso 2018-2019. Se diseñaron y presentaron diferentes problemas relacionados con todos estos conceptos como metodología de aprendizaje basado en problemas. Para evaluar el empleo de este tipo de metodología activa se plantea la elaboración de una encuesta a los estudiantes de manera anónima e individual y la realización de una matriz de escenarios presentes y futuros para la asignatura de forma grupal. Es importante señalar que a pesar de que para muchos de los estudiantes (67%) esta era la …

CoevaluaciónAprendizaje basado en problemasInnovación educativaActive learningProblem-based learningAprendizaje cooperativoEducational innovationsCooperative learningAprendizaje activoIngeniería QuímicaHigher level educationEducación superiorComputingMilieux_COMPUTERSANDEDUCATIONEnseñanza superiorTecnologías y educaciónTechnologies and education
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Evaluación de las actividades realizadas mediante la metodología de Aprendizaje Basado en Problemas

2020

[ES] La metodología de Aprendizaje Basado en Problemas (ABP) requiere un enfoque de evaluación en el que se evalúen una serie de competencias específicas y transversales. Esta evaluación debe de tener un carácter formativo que permita a los estudiantes identificar y corregir los errores a tiempo. Por lo tanto, es necesario disponer de herramientas para poder evaluar apropiadamente los resultados de aprendizaje y las competencias establecidas. En la asignatura de Corrosión de segundo de Máster de Ingeniería Química, el ABP se ha evaluado a través de un informe a entregar tras cada sesión de ABP, en donde se recogen las principales conclusiones tras la resolución cooperativa del problema plan…

Aprendizaje basado en problemasInnovación educativaCoevaluaciónProblem-based learningSelf-assessment toolsCo-assessmentRubricsRubric based evaluationHerramientas de autoevaluaciónEducación superiorRúbricasProblem-based learning (PBL) methodologyEnseñanza superiorTecnologías y educación
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ZnO nanostructures: synthesis by anodization and applications in photoelectrocatalysis

2021

Abstract Solar energy is a clean and abundant energy source. In a photoelectrochemical cell, energy from sunlight is captured and converted into electric power, chemical fuels such as hydrogen is employed to degrade organic pollutants. ZnO is a promising material for photoelectrocatalysis due to its remarkable properties. The aim of this review is to perform an exhaustive revision of nanostructured ZnO synthesis by electrochemical anodization in order to control surface characteristics of this material through anodization parameters such as electrolyte type and concentration, potential, time, temperature, stirring, and post treatment. Finally, application of ZnO nanostructures is overviewed…

Materials scienceNanostructureAnodizingGeneral Chemical EngineeringNanotechnology02 engineering and technology010402 general chemistry021001 nanoscience & nanotechnology0210 nano-technology01 natural sciences0104 chemical sciencesReviews in Chemical Engineering
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Control on the morphology and photoelectrocatalytic properties of ZnO nanostructures by simple anodization varying electrolyte composition

2021

Abstract Zinc oxide nanostructured electrodes were successfully synthesized by a simple method of anodization in different aqueous bicarbonate electrolytes. The influence of the anodization electrolyte composition (by adding ethanol or glycerol) on the morphology and the photoelectrocatalytic properties of the zinc oxide electrodes was studied, as well as the combined effect of anodizing under controlled hydrodynamic conditions. Field Emission Scanning Electron Microscope (FE-SEM) images of the ZnO electrodes showed that the addition of ethanol or glycerol to the anodization electrolyte resulted in changes in size and morphology of the nanostructures. Thus, ZnO nanowires, nanotubes, nanospo…

PhotocurrentAqueous solutionAnodizingGeneral Chemical Engineeringchemistry.chemical_element02 engineering and technologyZincElectrolyte010402 general chemistry021001 nanoscience & nanotechnology01 natural sciences0104 chemical sciencesAnalytical ChemistryField emission microscopychemistryChemical engineeringElectrodeElectrochemistryWater splitting0210 nano-technologyJournal of Electroanalytical Chemistry
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