Publicación:
Blue LED light-driven photoelectrocatalytic removal of naproxen from water: Kinetics and primary by-products

Página de artículo simple
dc.contributor.author Changanaqui, Katherina es_PE
dc.contributor.author Alarcon, Hugo es_PE
dc.contributor.author Brillas, Enric es_PE
dc.contributor.author Sires, Ignasi es_PE
dc.date.accessioned 2024-05-30T23:13:38Z
dc.date.available 2024-05-30T23:13:38Z
dc.date.issued 2020
dc.description.abstract Here, we demonstrate the viability of a ZnO/TiO2/Ag2Se thin-film composite synthesized on FTO to degrade the drug naproxen in aqueous solutions by visible-light photoelectrocatalysis (PEC). The experiments were made with 100 mL of solutions containing 5 mg L-1 drug and 50 mM Na2SO4 at natural pH, using a cell equipped with a Pt wire as cathode and the composite as photoanode exposed to a 36 W blue LED lamp. Total degradation was achieved after 210 min of electrolysis at anodic potential of +1.0 V/Ag vertical bar AgCl. This resulted from the oxidative action of hydroxyl radicals formed via direct anodic water discharge and through mediated water oxidation by photogenerated holes. The degradation rate decreased at higher naproxen concentration, but the treatment efficiency became higher due the deceleration of the parasitic reactions involving hydroxyl radicals. In chloride medium, the photoanode showed a large ability to produce active chlorine, which contributed to the oxidation of the target molecule. LC-QToF-MS analysis of treated solutions revealed the generation of four primary naphthalenic by-products, from which the initial degradation route of naproxen is proposed. (C) 2020 Elsevier B.V. All rights reserved.
dc.description.sponsorship Fondo Nacional de Desarrollo Científico y Tecnológico - Fondecyt
dc.identifier.doi https://doi.org/10.1016/j.jelechem.2020.114192
dc.identifier.uri https://hdl.handle.net/20.500.12390/2883
dc.language.iso eng
dc.publisher Elsevier BV
dc.relation.ispartof JOURNAL OF ELECTROANALYTICAL CHEMISTRY
dc.rights info:eu-repo/semantics/openAccess
dc.subject General Chemical Engineering
dc.subject Electrochemistry es_PE
dc.subject Analytical Chemistry es_PE
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#2.04.01
dc.title Blue LED light-driven photoelectrocatalytic removal of naproxen from water: Kinetics and primary by-products
dc.type info:eu-repo/semantics/article
dspace.entity.type Publication
oairecerif.author.affiliation #PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation #PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation #PLACEHOLDER_PARENT_METADATA_VALUE#
oairecerif.author.affiliation #PLACEHOLDER_PARENT_METADATA_VALUE#
Archivos
Colecciones
1.1 Eventos institucionales
 2.1 Estudios de doctorado y postdoctorado