Structural, optical and photocatalytic properties of mesoporous CuO nanoparticles with tunable size and different morphologies
Mohamed I. Said, A.A. Othman, Esraa M. Abd elhakeem
Abstract
) determined using Tauc's equation for the direct transition is increased from 2.2 to 2.65 eV when water is totally replaced by ethanol. The feasibility of both CuO samples as photocatalysts for the degradation of Congo red was tested. CuO prepared in pure water showed remarkably high efficiency during the first 25 min of illumination. Both samples showed complete dye removal after 35 min. Ultimately, this work presents a simple and green approach for the preparation of CuO NPs with tunable particle size, varied morphological shapes, high surface area, and different structural and optical properties merely through controlling the ethanol content in water.
Topics & Concepts
Particle sizeNanoparticleMaterials scienceAqueous solutionNanomaterialsMonoclinic crystal systemChemical engineeringPrecipitationRietveld refinementBand gapParticle (ecology)Morphology (biology)NanotechnologyAnalytical Chemistry (journal)ChemistryCrystallographyCrystal structureChromatographyPhysical chemistryOptoelectronicsMeteorologyGeneticsPhysicsOceanographyBiologyEngineeringGeologyCopper-based nanomaterials and applicationsZnO doping and propertiesCatalytic Processes in Materials Science