Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/47478
Registo completo
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Pereira, Luciana | por |
dc.contributor.author | Dias, Patrícia Sofia Sousa | por |
dc.contributor.author | Soares, O. S. G. P. | por |
dc.contributor.author | Ramalho, P. S. F. | por |
dc.contributor.author | Pereira, M. F. R. | por |
dc.contributor.author | Alves, M. M. | por |
dc.date.accessioned | 2017-11-16T23:06:42Z | - |
dc.date.available | 2017-11-16T23:06:42Z | - |
dc.date.issued | 2017-09-05 | - |
dc.identifier.citation | Pereira, Luciana; Dias, Patrícia; Soares, O. S. G. P.; Ramalho, P. S. F.; Pereira, M. F. R.; Alves, M. Madalena, Synthesis, characterization and application of magnetic carbon materials as electron shuttles for the biological and chemical reduction of the azo dye Acid Orange 10. Applied Catalysis B: Environmental, 212, 175-184, 2017 | por |
dc.identifier.issn | 1873-3883 | por |
dc.identifier.uri | https://hdl.handle.net/1822/47478 | - |
dc.description | Supplementary data associated with this article can be found,in the online version, at http://dx.doi.org/10.1016/j.apcatb.2017.04.060. | por |
dc.description.abstract | A set of core(ferrite, FeO)-shell(carbon, C) composites, C@FeO, C@MnFeO, C@CoFeO, and carbon nanotubes (CNT) impregnated with 2% of Fe (CNT@2%Fe) were prepared. The different composites were tested as redox mediators (RM) in the biological reduction of the azo dye Acid Orange 10 (AO10). Materials were tested at different concentrations from 0.1 to 1.0 g L1. In the absence of RM, the AO10 decolourisation after 24 h of reaction was only 30% at a rate of 0.2 d1. In the presence of the core-shell composites, better results were obtained with C@FeO materials at the amount of 1.0 g L1. The extent of AO10 decolourisation was above 90% and rate improved circa 29-fold. With CNT@2%Fe, the best efficiency (98 ± 3%) was achieved with 0.5 g L1 leading to a 79-fold rate increase. In abiotic controls, though at lower extent, the reduction of the dyes also occurred likely due to the electron transfer from Fe2+ to carbon and then to the dye. To prove this, assays combining single CNT and FeO materials were performed, and FeO had effect in the reaction only when combined with CNT. In the biological assay, the rate was the double and the percentage of decolourisation increased from (88 ± 6)% to (97 ± 1)%, when both materials were present in solution as compared with results in the presence of CNT alone. Under abiotic conditions, decolourisation occurred only in the presence of both materials, with a final percentage of (54 ± 2)%. Owing to their magnetic character, materials were removed from the media and successfully applied in successive cycles. | por |
dc.description.sponsorship | This work was supported by the exploratory EXPL/AAG-TEC/0898/2013 financed by the Portuguese Foundation for Scienceand Technology (FCT). Acknowledges also to FCT under thescope of the strategic funding of UID/BIO/04469/2013 unit andCOMPETE 2020 (POCI-01-0145-FEDER-006684) and BioTecNorteoperation (NORTE-01-0145-FEDER-000004) funded by EuropeanRegional Development Fund under the scope of Norte2020 –Programa Operacional Regional do Norte; to the project “AIProc-Mat@N2020 – Advanced Industrial Processes and Materials fora Sustainable Northern Region of Portugal 2020”, with thereference NORTE-01-0145-FEDER-000006, supported by NortePortugal Regional Operational Programme (NORTE 2020), underthe Portugal 2020 Partnership Agreement, through the EuropeanRegional Development Fund (ERDF) and to Project POCI-01-0145-FEDER-006984–Associate Laboratory LSRE-LCM funded by ERDF through COMPETE2020 – Programa Operacional Competitividadee Internacionalizac¸ ão (POCI) – and by national funds through FCT -Fundação para a Ciência e a Tecnologia.Luciana Pereira a post-doc fellowship (SFRH/BPD/110235/2015) from FCT. | por |
dc.language.iso | eng | por |
dc.publisher | Elsevier 1 | por |
dc.relation | info:eu-repo/grantAgreement/FCT/5876-PPCDTI/133922/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/COMPETE/133922/PT | por |
dc.relation | info:eu-repo/grantAgreement/FCT/5876/147337/PT | por |
dc.relation | SFRH/BPD/110235/2015 | por |
dc.rights | openAccess | por |
dc.subject | Azo dye reduction | por |
dc.subject | Core-shell composites | por |
dc.subject | Electron shuttle | por |
dc.subject | Magnetic carbon materials | por |
dc.subject | Redox mediators | por |
dc.title | Synthesis, characterization and application of magnetic carbon materials as electron shuttles for the biological and chemical reduction of the azo dye Acid Orange 10 | por |
dc.type | article | - |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | http://www.elsevier.com/locate/issn/09263373 | por |
dc.comments | CEB46767 | por |
oaire.citationStartPage | 175 | por |
oaire.citationEndPage | 184 | por |
oaire.citationConferencePlace | Netherlands | - |
oaire.citationVolume | 212 | por |
dc.date.updated | 2017-08-03T11:19:37Z | - |
dc.identifier.eissn | 0926-3373 | por |
dc.identifier.doi | 10.1016/j.apcatb.2017.04.060 | por |
dc.description.publicationversion | info:eu-repo/semantics/publishedVersion | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Applied Catalysis. B: Environmental | por |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
document_46767_1.pdf | 1,89 MB | Adobe PDF | Ver/Abrir |