Facile preparation of a Pt-ERGO composite modified screen-printed electrode for the sensitive determination of phenolic compounds
The mass production of screen-printed electrochemical devices with integrated electrodes has facilitated the widespread adoption of electroanalytical methods. The SPEs (screen-printed electrodes) overcome some obstacles associated with the use of conventional electrochemical cells, making them acces...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844023097293 |
| _version_ | 1797383981169115136 |
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| author | Luís Lema Raquel Oliveira Isilda Amorim Ana Paula Bettencourt Fátima Bento |
| author_facet | Luís Lema Raquel Oliveira Isilda Amorim Ana Paula Bettencourt Fátima Bento |
| author_sort | Luís Lema |
| collection | DOAJ |
| description | The mass production of screen-printed electrochemical devices with integrated electrodes has facilitated the widespread adoption of electroanalytical methods. The SPEs (screen-printed electrodes) overcome some obstacles associated with the use of conventional electrochemical cells, making them accessible to untrained operators. Despite their advantages, SPEs require activation/modification of the working electrode (WE) to enhance sensitivity. Nanomaterials, with metal nanoparticles (NPs) dispersed in polymers and/or carbon NPs has gaining popularity for this purpose. In this study, we describe a modification of carbon SPEs (SPCEs) using Pt NPs and reduced graphene oxide (ERGO). The Pt-ERGO@SPCE is prepared by galvanostatic reduction of drop-casted precursors directly onto the WE surface, eliminating complex synthetic steps and high temperatures. After optimizing Pt amount and reduction extent, the modified SPCEs were tested for detecting hydroquinone (HQ) and bisphenol A (BPA). DPV results show significantly increased sensitivity for the quantification of both compounds. The modified SPCEs demonstrates promising performance: precision (5 % HQ, 8 % BPA), detection limits (1.4 μM HQ, 4.6 μM BPA), sensitivity (1688 μA mM−1 HQ, 441 μA mM−1 BPA), and recoveries (98–113 % HQ, 98–104 % BPA). This simple electrode modification holds great potential, allowing the preparation of the sensor by personnel who may lack access to well-equipped laboratories, particularly in developing countries. |
| first_indexed | 2024-03-08T21:28:51Z |
| format | Article |
| id | doaj.art-186f2b098d3b46e48702ba5b5cb5c07f |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-03-08T21:28:51Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-186f2b098d3b46e48702ba5b5cb5c07f2023-12-21T07:33:43ZengElsevierHeliyon2405-84402023-12-01912e22521Facile preparation of a Pt-ERGO composite modified screen-printed electrode for the sensitive determination of phenolic compoundsLuís Lema0Raquel Oliveira1Isilda Amorim2Ana Paula Bettencourt3Fátima Bento4Department of Chemistry, Centre of Chemistry, Campus Gualtar, University of Minho, 4710-057, Braga, Portugal; Higher Institute of Educational Sciences of Uíge, Uíge, AngolaDepartment of Chemistry, Centre of Chemistry, Campus Gualtar, University of Minho, 4710-057, Braga, PortugalDepartment of Chemistry, Centre of Chemistry, Campus Gualtar, University of Minho, 4710-057, Braga, Portugal; Clean Energy Cluster, International Iberian Nanotechnology Laboratory (INL), Avenida Mestre Jose Veiga, 4715-330, Braga, PortugalDepartment of Chemistry, Centre of Chemistry, Campus Gualtar, University of Minho, 4710-057, Braga, PortugalDepartment of Chemistry, Centre of Chemistry, Campus Gualtar, University of Minho, 4710-057, Braga, Portugal; Corresponding author.The mass production of screen-printed electrochemical devices with integrated electrodes has facilitated the widespread adoption of electroanalytical methods. The SPEs (screen-printed electrodes) overcome some obstacles associated with the use of conventional electrochemical cells, making them accessible to untrained operators. Despite their advantages, SPEs require activation/modification of the working electrode (WE) to enhance sensitivity. Nanomaterials, with metal nanoparticles (NPs) dispersed in polymers and/or carbon NPs has gaining popularity for this purpose. In this study, we describe a modification of carbon SPEs (SPCEs) using Pt NPs and reduced graphene oxide (ERGO). The Pt-ERGO@SPCE is prepared by galvanostatic reduction of drop-casted precursors directly onto the WE surface, eliminating complex synthetic steps and high temperatures. After optimizing Pt amount and reduction extent, the modified SPCEs were tested for detecting hydroquinone (HQ) and bisphenol A (BPA). DPV results show significantly increased sensitivity for the quantification of both compounds. The modified SPCEs demonstrates promising performance: precision (5 % HQ, 8 % BPA), detection limits (1.4 μM HQ, 4.6 μM BPA), sensitivity (1688 μA mM−1 HQ, 441 μA mM−1 BPA), and recoveries (98–113 % HQ, 98–104 % BPA). This simple electrode modification holds great potential, allowing the preparation of the sensor by personnel who may lack access to well-equipped laboratories, particularly in developing countries.http://www.sciencedirect.com/science/article/pii/S2405844023097293Screen-printed electrodesSensitive detectionPt nanoparticlesReduced graphene oxidePhenolic compoundsElectrochemical sensor |
| spellingShingle | Luís Lema Raquel Oliveira Isilda Amorim Ana Paula Bettencourt Fátima Bento Facile preparation of a Pt-ERGO composite modified screen-printed electrode for the sensitive determination of phenolic compounds Heliyon Screen-printed electrodes Sensitive detection Pt nanoparticles Reduced graphene oxide Phenolic compounds Electrochemical sensor |
| title | Facile preparation of a Pt-ERGO composite modified screen-printed electrode for the sensitive determination of phenolic compounds |
| title_full | Facile preparation of a Pt-ERGO composite modified screen-printed electrode for the sensitive determination of phenolic compounds |
| title_fullStr | Facile preparation of a Pt-ERGO composite modified screen-printed electrode for the sensitive determination of phenolic compounds |
| title_full_unstemmed | Facile preparation of a Pt-ERGO composite modified screen-printed electrode for the sensitive determination of phenolic compounds |
| title_short | Facile preparation of a Pt-ERGO composite modified screen-printed electrode for the sensitive determination of phenolic compounds |
| title_sort | facile preparation of a pt ergo composite modified screen printed electrode for the sensitive determination of phenolic compounds |
| topic | Screen-printed electrodes Sensitive detection Pt nanoparticles Reduced graphene oxide Phenolic compounds Electrochemical sensor |
| url | http://www.sciencedirect.com/science/article/pii/S2405844023097293 |
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