Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Direct Laser Writing of Poly(furfuryl Alcohol)/Graphene Oxide Electrodes for Electrochemical Determination of Ascorbic Acid
Ist Teil von
ChemElectroChem, 2022-09, Vol.9 (17), p.n/a
Ort / Verlag
Weinheim: John Wiley & Sons, Inc
Erscheinungsjahr
2022
Link zum Volltext
Quelle
Wiley Online Library Journals Frontfile Complete
Beschreibungen/Notizen
Due to the considerable importance of preventing and treating diseases, efficient detection methods are required to monitor levels of ascorbic acid (AA) in beverages, foods, dietary supplements, and biological fluids. In this work, an efficient, easy handling, low cost, and simple fabrication process for non‐enzymatic electrochemical sensors was fabricated through the carbonization of a graphene oxide filled biomass‐derived polymer poly(furfuryl alcohol) (PFA/GO), as sustainable alternative, using a high throughput CO2 laser‐scribing process. The laser power was found to determine the physicochemical properties of the resulting graphene‐like electrodes. As an electrochemical sensor, devices presented a detection limit of 1.0 μmol cm2 L−1 with good reproducibility towards AA oxidation. For real sample measurements, recovery rates between 97 and 113 % were found in commercial vitamin‐C tablet. Analysis of AA in synthetic sweat presented good intra‐electrode reproducibility and limit of detection of 1.3 μmol cm2 L−1.
Direct laser writing of graphene oxide‐biomass‐derived poly(furfuryl alcohol) (PFA/GO) electrode allowed the preparation of a non‐enzymatic electrochemical sensor. The PFA/GO‐3.88 W sensor showed good figures of merit, such as low detection limit, sensitivity, stability and anti‐interference performance. It exhibited good ability to detect ascorbic acid in vitamin C tablets and synthetic sweat.