Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/37054
Registo completo
Campo DC | Valor | Idioma |
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dc.contributor.author | Gusmão, Rui | por |
dc.contributor.author | López-Puente, Vanesa | por |
dc.contributor.author | Pastoriza-Santos, Isabel | por |
dc.contributor.author | Pérez-Juste, Jorge | por |
dc.contributor.author | Proença, M. Fernanda R. P. | por |
dc.contributor.author | Bento, M. Fátima | por |
dc.contributor.author | Geraldo, M. Dulce | por |
dc.contributor.author | Paiva, M. C. | por |
dc.contributor.author | González-Romero, Elisa | por |
dc.date.accessioned | 2015-09-10T15:30:11Z | - |
dc.date.available | 2015-09-10T15:30:11Z | - |
dc.date.issued | 2015 | - |
dc.identifier.citation | Gusmão, R., Lopez-Puente, V., Pastoriza-Santos, I., Perez-Juste, J., Proenca, M. F., Bento, F., . . . Gonzalez-Romero, E. (2015). Enhanced electrochemical sensing of polyphenols by an oxygen-mediated surface. Rsc Advances, 5(7), 5024-5031. doi: 10.1039/c4ra12660b | por |
dc.identifier.issn | 2046-2069 | por |
dc.identifier.uri | https://hdl.handle.net/1822/37054 | - |
dc.description.abstract | We report a straightforward heat treatment in air of commercial screen-printed carbon electrodes (SPCE) at different temperatures and times (ht-SPCE) that produces considerable electrocatalytic effects. The active area and the presence of oxygen groups on the ht-SPCE surface increased upon thermal treatment, more than doubling and by 20%, respectively. The increase of oxygen-containing carbon surface groups results in strong interactions and substantial improvement in Faradaic currents, up to a 10 fold increase in the voltammetric response of relevant polyphenols (hydroquinone, catechol, pyrogallol and dopamine). Moreover, ht-SPCE displayed higher selectivity towards the oxidation of polyphenol mixtures than the untreated SPCE. Finally, good linear ranges were obtained by voltammetric determination of dopamine with detection and quantification limits 5 times lower than the values obtained for the untreated SPCE. The versatility of oxidation by air makes this activation procedure very attractive and easy to implement, which can be further used for numerous applications in the (bio)sensor field. | por |
dc.description.sponsorship | Xunta de Galicia/FEDER (GPC2013-006 and R2014/030), MINECO (CTQ 2010-16390, MAT2013-45168-R, CTQ2011-28157 and PRIAIBPT- 2011-1096) and by FCT/CRUP (Est-C/QUI/UI0686/2011; FCOMP-01-0124-FEDER-022716 and E-136/2012) | por |
dc.language.iso | eng | por |
dc.publisher | Royal Society of Chemistry | por |
dc.rights | restrictedAccess | por |
dc.title | Enhanced electrochemical sensing of polyphenols by oxygen-mediated surface | por |
dc.type | article | - |
dc.peerreviewed | yes | por |
sdum.publicationstatus | published | por |
oaire.citationStartPage | 5024 | por |
oaire.citationEndPage | 5031 | por |
oaire.citationIssue | 7 | por |
oaire.citationTitle | RSC advances | por |
oaire.citationVolume | 5 | por |
dc.identifier.doi | 10.1039/C4RA12660B | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | RSC advances | por |
Aparece nas coleções: | CDQuim - Artigos (Papers) IPC - Artigos em revistas científicas internacionais com arbitragem |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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RSC Advances 2014.pdf Acesso restrito! | artigo em pdf | 826,15 kB | Adobe PDF | Ver/Abrir |