| Autor: |
Maria Luz Rodriguez-Mendez, Ana Isabel Ruiz-Carmuega, Angela Sastre, Javier Ortiz, Celia Garcia-Hernandez, Cristina Garcia-Cabezon |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Proceedings, Vol 1, Iss 4, p 413 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
2504-3900 |
| DOI: |
10.3390/proceedings1040413 |
| Popis: |
Voltammetric sensors chemically modified with combinations of two electrocatalytic materials: tetraoctylammonium bromide capped gold nanoparticles (AuNPNBr) and a sulphur containing zinc phthalocyanine derivative (ZnPcRS) are reported. The electrocatalytic effects in the detection of catechol have been analyzed in sensors obtained by direct mixing (AuNPNBr/ZnPcRS) and in sensors modified with an adduct where both components are linked covalently (AuNPNBr-S-ZnPcR). Results demonstrate that the nature of the interaction between both components modifies the electrocatalytic properties. The AuNPNBr/ZnPcRS mixture improves the electron transfer rate of the catechol reduction, with limits of detection of 10−6 M. The covalent adduct AuNPNBr-S-ZnPcR enhances the response rate of the oxidation of the catechol with limits of detection of 10−7 M. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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