Exploration of the initial photocatalytic activity parameters of ?Fe2O3–rutile for methylene blue discoloration in water through the OFAT process

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dc.article.number114495
dc.catalogadorjlo
dc.contributor.authorRetamoso Llamas, Claudia Patricia
dc.contributor.authorEscalona Burgos, Néstor Guillermo
dc.contributor.authorGonzález Hormazábal, Marcelo Andrés
dc.contributor.authorBarrientos Poblete, Lorena Julieta
dc.date.accessioned2024-07-19T16:30:10Z
dc.date.available2024-07-19T16:30:10Z
dc.date.issued2023
dc.description.abstractThe photocatalyst response is related to experimental conditions that improve effectiveness in removing contaminants. A parameter analysis of ?Fe2O3–rutile and water contaminated with methylene blue (MB) was carried out to obtain initial factors that impact reaction conditions. Moreover, the following factors were tested: the ?Fe2O3–rutile load, the initial MB concentration, and the initial pH solution. These one-factor-at-a-time variations were made to explore the conditions of each variable with the other two fixed. Above all, a significant change was identified in the initial discoloration rate from 5.2 to 35.56 10?9 mol g?1 s?1, with 34 and 91 % removal effectiveness, respectively. These results were achieved with an ?Fe2O3–rutile load of 1.0 g L?1, an initial MB concentration of 8.0 10?6 mol L?1, and a pH of 8.8, after 540 min of irradiation. This high discoloration effectiveness with ?Fe2O3–rutile had not been previously reported. The parameter that most influenced the photocatalytic activity was the initial pH solution due to the interaction of the point of zero charge of ?Fe2O3–rutile and the contaminated water; the pH of the solution exceeds the isoelectric point, it causes electrostatic forces and hydrogen bonds with MB to increase its effectiveness. The combination of ?Fe2O3–rutile and the removal of methylene blue in water improves adsorption on the surface of the ?Fe2O3–rutile, providing the highest discoloration rate.
dc.description.funderVRI
dc.description.funderUniversidad Pontificia Bolivariana
dc.description.funderPontificia Universidad Católica de Chile
dc.format.extent10 páginas
dc.identifier.doi10.1016/j.jphotochem.2022.114495
dc.identifier.issn1010-6030
dc.identifier.scopusidSCOPUS_ID:85145843808
dc.identifier.urihttp://www.elsevier.com/locate/jphotochem
dc.identifier.urihttps://doi.org/10.1016/j.jphotochem.2022.114495
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/87175
dc.information.autorucEscuela de Ingeniería; Retamoso Llamas, Claudia Patricia; 0000-0001-8182-2329; 1031028
dc.information.autorucEscuela de Ingeniería; Escalona Burgos, Néstor Guillermo; 0000-0002-2628-4609; 1021533
dc.information.autorucEscuela de Ingeniería; González Hormazábal, Marcelo Andrés; S/I; 143922
dc.information.autorucEscuela de Química; Barrientos Poblete, Lorena Julieta; 0000-0002-9641-6507; 1025341
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final10
dc.pagina.inicio1
dc.revistaJournal of Photochemistry and Photobiology A: Chemistry
dc.rightsacceso restringido
dc.subjectAcid-basic sites
dc.subjectIEPS
dc.subjectOFAT
dc.subjectPhotocatalysis
dc.subjectPZC
dc.subjectRutile
dc.subject.ddc620
dc.subject.deweyIngenieríaes_ES
dc.titleExploration of the initial photocatalytic activity parameters of ?Fe2O3–rutile for methylene blue discoloration in water through the OFAT process
dc.typeartículo
dc.volumen438
sipa.codpersvinculados1031028
sipa.codpersvinculados1021533
sipa.codpersvinculados143922
sipa.codpersvinculados1025341
sipa.trazabilidadSCOPUS;02-03-2023
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