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dc.contributor.author | Gomis Vicens, Juan | es_ES |
dc.contributor.author | Arques Sanz, Antonio | es_ES |
dc.contributor.author | Amat Payá, Ana María | es_ES |
dc.contributor.author | Marín García, Mª Luisa | es_ES |
dc.contributor.author | Miranda Alonso, Miguel Ángel | es_ES |
dc.date.accessioned | 2014-05-16T17:39:32Z | |
dc.date.issued | 2012-07-23 | |
dc.identifier.issn | 0926-3373 | |
dc.identifier.uri | http://hdl.handle.net/10251/37530 | |
dc.description.abstract | Photodegradation of dimethoate, alachlor, and pyrimethanil using a thiapyrilium salt (TPTP+) as photocatalyst was performed under simulated sunlight. The photocatalyst removes preferentially pyrimethanil (45% after 60 min of irradiation), followed by dimethoate (20%) and alachlor (13%). In the three cases, an important to moderate decrease of the fluorescence intensity upon addition of the pollutants was observed. The active participation of the singlet excited state in the photodegradation of the pollutants was demonstrated; the corresponding dynamic quenching rate constants were found to be 1.9 x 10(10) M-1 s(-1) (pyrimethanil), 6.7 x 10(9) M-1 s(-1) (dimethoate) and 9.1 x 10(9) M-1 s(-1) Moreover, a decrease in the signal corresponding to the triplet excited state was observed immediately after the laser pulse; again a good correlation was observed between the missing fraction of triplets and the photodegradation rates under solar light. Detection of TPT+, the reduced species derived from the photocatalyst, as well as Rehm-Weller calculations on the free energy changes, strongly support an electron transfer mechanism occurring from the singlet excited state. (C) 2012 Published by Elsevier B.V. | es_ES |
dc.description.sponsorship | Financial support from the Spanish Government (CTQ200913699, CTQ2009-13459-C05-03/PPQ and RIRAAF RETICS), and the Generalitat Valenciana (Prometeo Program and ACOM/2011/173) is gratefully acknowledged. | en_EN |
dc.format.extent | 6 | es_ES |
dc.language | Inglés | es_ES |
dc.publisher | Elsevier | es_ES |
dc.relation.ispartof | Applied Catalysis B: Environmental | es_ES |
dc.rights | Reserva de todos los derechos | es_ES |
dc.subject | Pesticides | es_ES |
dc.subject | Fluorescence | es_ES |
dc.subject | Laser flash photolysis | es_ES |
dc.subject | Quenching | es_ES |
dc.subject | Singlet excited state | es_ES |
dc.subject | Triplet | es_ES |
dc.subject.classification | INGENIERIA TEXTIL Y PAPELERA | es_ES |
dc.subject.classification | QUIMICA ANALITICA | es_ES |
dc.subject.classification | QUIMICA FISICA | es_ES |
dc.subject.classification | QUIMICA ORGANICA | es_ES |
dc.title | A mechanistic study on photocatalysis by thiapyrylium salts. Photodegradationof dimethoate, alachlor and pyrimethanil under simulated sunlight | es_ES |
dc.type | Artículo | es_ES |
dc.embargo.lift | 10000-01-01 | |
dc.embargo.terms | forever | es_ES |
dc.identifier.doi | 10.1016/j.apcatb.2012.04.025 | |
dc.relation.projectID | info:eu-repo/grantAgreement/MICINN//CTQ2009-13459-C05-03/ES/Integración de procesos de fotocatálisis solar en la depuración biológica de aguas residuales para la eliminación de contaminantes emergentes (EDARSOL)/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/MINECO//RD12%2F0013%2F0009/ES/REACCIONES ADVERSAS A ALÉRGENOS Y FÁRMACOS/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/GVA//ACOMP%2F2011%2F173/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/MICINN//CTQ2009-13699/ES/MECANISMOS FOTOQUIMICOS DEL DAÑO AL ADN Y SU REPARACION. FOTOSENSIBILIZACION FRENTE A FOTOPROTECCION/ | es_ES |
dc.rights.accessRights | Cerrado | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Departamento de Ingeniería Textil y Papelera - Departament d'Enginyeria Tèxtil i Paperera | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Departamento de Química - Departament de Química | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Grupo de Procesos de Oxidación Avanzada | es_ES |
dc.description.bibliographicCitation | Gomis Vicens, J.; Arques Sanz, A.; Amat Payá, AM.; Marín García, ML.; Miranda Alonso, MÁ. (2012). A mechanistic study on photocatalysis by thiapyrylium salts. Photodegradationof dimethoate, alachlor and pyrimethanil under simulated sunlight. Applied Catalysis B: Environmental. 123-124:208-213. https://doi.org/10.1016/j.apcatb.2012.04.025 | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | http://dx.doi.org/10.1016/j.apcatb.2012.04.025 | es_ES |
dc.description.upvformatpinicio | 208 | es_ES |
dc.description.upvformatpfin | 213 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 123-124 | es_ES |
dc.relation.senia | 232434 | |
dc.contributor.funder | Ministerio de Ciencia e Innovación | es_ES |
dc.contributor.funder | Ministerio de Economía y Competitividad | es_ES |
dc.contributor.funder | Generalitat Valenciana | es_ES |