Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/24815
DC Field | Value | Language |
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dc.contributor.author | Silva, M. | - |
dc.contributor.author | Calvete, M. J. F. | - |
dc.contributor.author | Gonçalves, N. P. F. | - |
dc.contributor.author | Burrows, H. D. | - |
dc.contributor.author | Sarakha, M. | - |
dc.contributor.author | Fernandes, A. | - |
dc.contributor.author | Ribeiro, M. F. | - |
dc.contributor.author | Azenha, M. E | - |
dc.contributor.author | Pereira, M. M. | - |
dc.date.accessioned | 2013-12-27T16:37:41Z | - |
dc.date.available | 2013-12-27T16:37:41Z | - |
dc.date.issued | 2012-09 | - |
dc.identifier.citation | SILVA, 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. 79-88 | por |
dc.identifier.issn | 0304-3894 | - |
dc.identifier.uri | https://hdl.handle.net/10316/24815 | - |
dc.description.abstract | In 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.iso | eng | por |
dc.publisher | Elsevier | por |
dc.rights | openAccess | por |
dc.subject | Zinc(II) phthalocyanines | por |
dc.subject | Al-MCM-41 | por |
dc.subject | Photocatalysis | por |
dc.subject | Pesticide | por |
dc.subject | Singlet oxygen | por |
dc.title | Zinc(II) phthalocyanines immobilized in mesoporous silica Al-MCM-41 and their applications in photocatalytic degradation of pesticides | por |
dc.type | article | por |
degois.publication.firstPage | 79 | por |
degois.publication.lastPage | 88 | por |
degois.publication.title | Journal of Hazardous Materials | por |
dc.relation.publisherversion | http://www.journals.elsevier.com/journal-of-hazardous-materials | por |
dc.peerreviewed | Yes | por |
dc.identifier.doi | 10.1016/j.jhazmat.2012.06.059 | - |
degois.publication.volume | 233-234 | por |
uc.controloAutoridade | Sim | - |
item.fulltext | Com Texto completo | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
crisitem.author.dept | Faculty of Sciences and Technology | - |
crisitem.author.parentdept | University of Coimbra | - |
crisitem.author.researchunit | CQC - Coimbra Chemistry Centre | - |
crisitem.author.researchunit | CQC - Coimbra Chemistry Centre | - |
crisitem.author.researchunit | CQC - Coimbra Chemistry Centre | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.orcid | 0000-0003-2094-4781 | - |
crisitem.author.orcid | 0000-0003-3127-2298 | - |
crisitem.author.orcid | 0000-0002-8787-7854 | - |
crisitem.author.orcid | 0000-0002-9495-2592 | - |
Appears in Collections: | FCTUC Química - Artigos em Revistas Internacionais |
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File | Description | Size | Format | |
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Zinc(II) phthalocyanines immobilized in mesoporous silica.pdf | 510.08 kB | Adobe PDF | View/Open |
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