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Detection of azo dyes using carbon dots from olive mill wastes

2022-11-16Journal article Open access
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dc.contributor.authorSousa, Diogo A.
dc.contributor.authorBerberan-Santos, Mario
dc.contributor.authorPrata, José Virgílio
dc.date.accessioned2023-05-26T08:55:49Z
dc.date.available2023-05-26T08:55:49Z
dc.date.issued2022-11-16
dc.description.abstractAzo dyes are widely spread in our day life, being heavily used in cosmetics, healthcare products, textile industries, and as artificial food colorants. This intense industrial activity, which inherently includes their own production, inexorably leads to uncontrolled release of dyes into the environment. As emerging pollutants, their detection, particularly in water systems, is a priority. Herein, a fluorescence-based method was employed for the sensitive and selective detection of anionic and neutral azo dyes. Carbon dots (CDs) synthesized from wet pomace (WP), an abundant semi-solid waste of olive mills, were used as probes. An outstanding capability for detection of azo dyes methyl orange (MO) and methyl red (MR) in aqueous solutions was disclosed, which reached a limit of detection (LOD) of 151 ppb for MO. The selectivity of WP-CDs for the anionic azo dye (MO) was established through competitive experiments with other dyes, either anionic (indigo carmine) or cationic (fuchsin, methylene blue, and rhodamine 6G); perchlorate salts of transition metal cations (Cu(II), Co(II), Fe(II), Fe(III), Hg(II), and Pb(II)); and sodium salts of common anions (NO3-, CO32-, Cl-, and SO42-). Evidence has been collected that supports static quenching as the main transduction event underlying the observed quenching of the probe's fluorescence, combined with a dynamic resonance energy transfer (RET) mechanism at high MO concentrations.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSOUSA, Diogo A.; BERBERAN-SANTOS, Mário; PRATA, José Virgílio – Detection of azo dyes using carbon dots from olive mill wastes. Chemosensors. eISSN 2227-9040. Vol. 10, N.º 11 (2022), pp. 1-14.pt_PT
dc.identifier.doi10.3390/chemosensors10110487pt_PT
dc.identifier.eissn2227-9040
dc.identifier.urihttp://hdl.handle.net/10400.21/16144
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationUIDB/00616/2022 - FCT/MCTESpt_PT
dc.relationUIDP/00616/2022 - FCT/MCTESpt_PT
dc.relationInstitute for Bioengineering and Biosciences
dc.relationInstitute for Bioengineering and Biosciences
dc.relation.publisherversionhttps://www.mdpi.com/2227-9040/10/11/487pt_PT
dc.subjectAzo dyespt_PT
dc.subjectCarbon dotspt_PT
dc.subjectOlive mill wastept_PT
dc.subjectSensorpt_PT
dc.subjectFluorescencept_PT
dc.subjectPollutants detectionpt_PT
dc.titleDetection of azo dyes using carbon dots from olive mill wastespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleInstitute for Bioengineering and Biosciences
oaire.awardTitleInstitute for Bioengineering and Biosciences
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04565%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04565%2F2020/PT
oaire.citation.endPage14pt_PT
oaire.citation.issue11pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleChemosensorspt_PT
oaire.citation.volume10pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameBerberan-Santos
person.familyNamePrata
person.givenNameMario
person.givenNameJosé Virgílio
person.identifier191765
person.identifier.ciencia-id3010-007D-E2FC
person.identifier.ciencia-idC11A-9130-8981
person.identifier.orcid0000-0002-2946-1498
person.identifier.orcid0000-0002-9068-2847
person.identifier.ridB-3810-2008
person.identifier.ridB-7214-2008
person.identifier.scopus-author-id7004298586
person.identifier.scopus-author-id9276778400
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication15e229f3-a619-4931-87eb-799091dc1601
relation.isAuthorOfPublication.latestForDiscovery15e229f3-a619-4931-87eb-799091dc1601
relation.isProjectOfPublicationfe3796fa-a276-4372-b49e-6de2dabc40cf
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