Electrochemically Exfoliated Graphene for Nanosensor Applications

• Published in: Journal of nanoscience and nanotechnology Vol. 19; no. 11; p. 7097
• Main Authors: Sivasankar, V, Senthilkumar, E, Vivekananth, R, Kalaivani, R A, Sivakumar, T
• Format: Journal Article
• Language: English
• Published: United States 01.11.2019
• ISSN: 1533-4899
• DOI: 10.1166/jnn.2019.16638

Water dispersible graphene layer are the excellent nano materials used for wide range of electronic applications. High quality graphene was synthesized by an eco-friendly, easy and cost effective electrochemical exfoliation method. In this work, graphite rod was used both as an anode and cathode for the production of graphene. Potassium sulphate (K₂SO₄) was used as an intercalating agent. Electrochemically exfoliated graphene (EEG) was coated on glassy carbon electrode (GCE) and evaluated towards the electrochemical oxidation of vanillin and L-phenylalanine. The fabricated electrode was able to detect vanillin and L-Phenylalanine as low as 0.2 M with signal to noise ratio of 3. A significant increase in the current was observed for the graphene coated electrode for both vanillin and L-phenylalanine when compared to bare Glassy electrode. The finding clearly demonstrated the higher detection capability, selectivity and reproducibility of EEG.