Microwave-assisted rapid synthesis of GO/SnTe nanocomposite for electrochemical quantification of caffeine and pharmaceutical formulations

• Published in: Journal of materials science. Materials in electronics Vol. 35; no. 26; p. 1749
• Main Authors: Kumar, Kalpana, Munusamy, S., Paramasivam, Sugumar, Murugan, Eagambaram, Dhamodharan, A.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.09.2024; Springer Nature B.V
• Subjects: Caffeine; Characterization and Evaluation of Materials; Chemical sensors; Chemical synthesis; Chemistry and Materials Science; Electrodes; Graphene; Materials Science; Nanocomposites; Optical and Electronic Materials; Oxidation; Real time; Synergistic effect; Tin tellurides
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-024-13505-4

In this investigation, a rapid microwave-assisted method was employed for the first time to synthesize the GO/SnTe nanocomposite. This approach lowers the energy barrier and accelerates the reaction, significantly impacting the shape and activity of the GO/SnTe nanocomposite. Tin telluride is a desirable electroactive component because of its low bandgap and high theoretical capacity. Additionally, the high surface area and defective structure of GO promote enhanced current flow across the electrode. The integration of these two materials generates a synergistic effect, enhancing electrocatalytic activity for the efficient oxidation of caffeine. Furthermore, the fabricated GO/SnTe-GC electrode outperformed reported electrodes for caffeine oxidation, exhibiting a broad linear range of 4.1–255 µM and a detection limit of 1.56 μM. On the other hand, the findings from real sample analysis and anti-interference studies indicate that this innovative material holds promise for developing novel electrochemical sensors. Particularly, graphene oxide modified with tin chalcogenides act as a real-time sensor with specific applications to real samples such as human milk and drug formulations.