Theoretical and experimental study of the photocatalytic activity of ZnO coated tubular reactor

dc.creatorEDNA IRIS RIOS VALDOVINOS
dc.creatorWILBER ANTUNEZ FLORES
dc.creatorJOSE FRANCISCO POLA ALBORES
dc.creatorPEDRO PIZA RUIZ
dc.creatorMARIO MIKI YOSHIDA
dc.date2013
dc.date.accessioned2023-07-21T15:30:07Z
dc.date.available2023-07-21T15:30:07Z
dc.identifierhttp://cimav.repositorioinstitucional.mx/jspui/handle/1004/1093
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7727084
dc.descriptionZnO thin films were deposited inside of fused silica tubing by aerosol assisted chemical vapor deposition technique. The films were transparent, uniform, highly adherent and non-light scattering. Photocatalytic activity of internally ZnO coated tubing was evaluated by discoloration of a methyl orange aqueous solution in a batch reactor. Tubing was externally irradiated with UV-A at room temperature. A one dimensional model was proposed to calculate the spatial distribution of the carrier density and the films’ surface charge carrier concentration. This model can explain the influence of the films thickness on the photocatalytic activity. Results showed that the photocatalytic activity largely depends on the film thickness. For external irradiation of the films the optimum thickness was around 60–70 nm, for which the photocatalytic activity was maximum. The photonic efficiency of internally ZnO coated tubular reactors was evaluated as a function of initial colorant concentration, irradiation time and intensity. Furthermore, due to the high activity of the ZnO films, the films were repeatedly exposed to UV-A irradiation cycles, followed by activity measurement.
dc.formatapplication/pdf
dc.languageeng
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttp://creativecommons.org/about/cc0/
dc.subjectinfo:eu-repo/classification/ZnO/AACVD
dc.subjectinfo:eu-repo/classification/Photocatalytic properties/Coated tubing
dc.subjectinfo:eu-repo/classification/Photonic efficiency/Carrier distribution model
dc.subjectinfo:eu-repo/classification/cti/1
dc.subjectinfo:eu-repo/classification/cti/22
dc.subjectinfo:eu-repo/classification/cti/2299
dc.subjectinfo:eu-repo/classification/cti/229999
dc.subjectinfo:eu-repo/classification/cti/229999
dc.titleTheoretical and experimental study of the photocatalytic activity of ZnO coated tubular reactor
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/submittedVersion


Este ítem pertenece a la siguiente institución