Detection of azo dyes using carbon dots from olive mill wastes
Main Author: | |
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Publication Date: | 2022 |
Other Authors: | , |
Format: | Article |
Language: | eng |
Source: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Download full: | http://hdl.handle.net/10400.21/16144 |
Summary: | Azo 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. |
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Detection of azo dyes using carbon dots from olive mill wastesAzo dyesCarbon dotsOlive mill wasteSensorFluorescencePollutants detectionAzo 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.MDPIRCIPLSousa, Diogo A.Berberan-Santos, MarioPrata, José Virgílio2023-05-26T08:55:49Z2022-11-162022-11-16T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/16144engSOUSA, 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. 1-14.10.3390/chemosensors101104872227-9040info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-03T10:14:30Zoai:repositorio.ipl.pt:10400.21/16144Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:23:44.147207Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Detection of azo dyes using carbon dots from olive mill wastes |
title |
Detection of azo dyes using carbon dots from olive mill wastes |
spellingShingle |
Detection of azo dyes using carbon dots from olive mill wastes Sousa, Diogo A. Azo dyes Carbon dots Olive mill waste Sensor Fluorescence Pollutants detection |
title_short |
Detection of azo dyes using carbon dots from olive mill wastes |
title_full |
Detection of azo dyes using carbon dots from olive mill wastes |
title_fullStr |
Detection of azo dyes using carbon dots from olive mill wastes |
title_full_unstemmed |
Detection of azo dyes using carbon dots from olive mill wastes |
title_sort |
Detection of azo dyes using carbon dots from olive mill wastes |
author |
Sousa, Diogo A. |
author_facet |
Sousa, Diogo A. Berberan-Santos, Mario Prata, José Virgílio |
author_role |
author |
author2 |
Berberan-Santos, Mario Prata, José Virgílio |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
RCIPL |
dc.contributor.author.fl_str_mv |
Sousa, Diogo A. Berberan-Santos, Mario Prata, José Virgílio |
dc.subject.por.fl_str_mv |
Azo dyes Carbon dots Olive mill waste Sensor Fluorescence Pollutants detection |
topic |
Azo dyes Carbon dots Olive mill waste Sensor Fluorescence Pollutants detection |
description |
Azo 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. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-11-16 2022-11-16T00:00:00Z 2023-05-26T08:55:49Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.21/16144 |
url |
http://hdl.handle.net/10400.21/16144 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
SOUSA, 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. 10.3390/chemosensors10110487 2227-9040 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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MDPI |
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MDPI |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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