Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/24815
DC FieldValueLanguage
dc.contributor.authorSilva, M.-
dc.contributor.authorCalvete, M. J. F.-
dc.contributor.authorGonçalves, N. P. F.-
dc.contributor.authorBurrows, H. D.-
dc.contributor.authorSarakha, M.-
dc.contributor.authorFernandes, A.-
dc.contributor.authorRibeiro, M. F.-
dc.contributor.authorAzenha, M. E-
dc.contributor.authorPereira, M. M.-
dc.date.accessioned2013-12-27T16:37:41Z-
dc.date.available2013-12-27T16:37:41Z-
dc.date.issued2012-09-
dc.identifier.citationSILVA, M. [et al.] - Zinc(II) phthalocyanines immobilized in mesoporous silica Al-MCM-41 and their applications in photocatalytic degradation of pesticides. "Journal of Hazardous Materials". ISSN 0304-3894. Vol. 233–234 (2012) p. 79-88por
dc.identifier.issn0304-3894-
dc.identifier.urihttp://hdl.handle.net/10316/24815-
dc.description.abstractIn the present study the authors investigated a set of three new zinc(II) phthalocyanines (zinc(II) tetranitrophthalocyanine (ZnTNPc), zinc(II) tetra(phenyloxy)phthalocyanine (ZnTPhOPc) and the tetraiodide salt of zinc(II)tetra(N,N,N-trimethylaminoethyloxy) phthalocyaninate (ZnTTMAEOPcI)) immobilized into Al-MCM-41 prepared via ship-in-a-bottle methodology. The samples were fully characterized by diffuse reflectance-UV–vis spectroscopy (DRS-UV–vis), luminescence, thermogravimetric analysis (TG/DSC), N2 adsorption techniques and elemental analysis. A comparative study was made on the photocatalytic performance upon irradiation within the wavelength range 320–460 nm of these three systems in the degradation of pesticides fenamiphos and pentachlorophenol. ZnTNPc@Al-MCM-41 and ZnTTMAEOPcI@Al-MCM-41 were found to be the most active systems, with the best performance observed with the immobilized cationic phthalocyanine, ZnTTMAEOPcI@Al-MCM-41. This system showed high activity even after three photocatalytic cycles. LC–MS product characterization and mechanistic studies indicate that singlet oxygen (1O2), produced by excitation of these immobilized photosensitizers, is a key intermediate in the photocatalytic degradation of both pesticides.por
dc.language.isoengpor
dc.publisherElsevierpor
dc.rightsopenAccesspor
dc.subjectZinc(II) phthalocyaninespor
dc.subjectAl-MCM-41por
dc.subjectPhotocatalysispor
dc.subjectPesticidepor
dc.subjectSinglet oxygenpor
dc.titleZinc(II) phthalocyanines immobilized in mesoporous silica Al-MCM-41 and their applications in photocatalytic degradation of pesticidespor
dc.typearticlepor
degois.publication.firstPage79por
degois.publication.lastPage88por
degois.publication.titleJournal of Hazardous Materialspor
dc.relation.publisherversionhttp://www.journals.elsevier.com/journal-of-hazardous-materialspor
dc.peerreviewedYespor
dc.identifier.doi10.1016/j.jhazmat.2012.06.059-
degois.publication.volume233-234por
uc.controloAutoridadeSim-
item.grantfulltextopen-
item.languageiso639-1en-
item.fulltextCom Texto completo-
crisitem.author.deptFaculdade de Ciências e Tecnologia, Universidade de Coimbra-
crisitem.author.deptFaculdade de Ciências e Tecnologia, Universidade de Coimbra-
crisitem.author.deptFaculdade de Ciências e Tecnologia, Universidade de Coimbra-
crisitem.author.parentdeptUniversidade de Coimbra-
crisitem.author.parentdeptUniversidade de Coimbra-
crisitem.author.parentdeptUniversidade de Coimbra-
crisitem.author.researchunitCoimbra Chemistry Center-
crisitem.author.researchunitCoimbra Chemistry Center-
crisitem.author.researchunitCoimbra Chemistry Center-
crisitem.author.parentresearchunitFaculdade de Ciências e Tecnologia, Universidade de Coimbra-
crisitem.author.parentresearchunitFaculdade de Ciências e Tecnologia, Universidade de Coimbra-
crisitem.author.parentresearchunitFaculdade de Ciências e Tecnologia, Universidade de Coimbra-
crisitem.author.orcid0000-0003-2094-4781-
crisitem.author.orcid0000-0003-3127-2298-
crisitem.author.orcid0000-0002-9495-2592-
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais
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