Paracetamol sensing with a flexible graphene paper electrode modified with <scp>MnCo<sub>2</sub>O<sub>4</sub></scp>
Murad Shafiyev, Elif Erçarıkcı, Kader Dağcı Kıranşan, Ezgi Topç̧u
Abstract
Abstract BACKGROUND The design of new‐generation flexible sensors for medical applications has gained considerable interest in the research community in recent past years. Herein, a free‐standing flexible electrode was developed for the electrochemical determination of Paracetamol (PC). This graphene‐based paper electrode was prepared using graphene and MnCo 2 O 4 dispersion with a mold‐casting method followed by chemical reduction. The morphology and structure of our flexible paper electrode (MnCo 2 O 4 /GP) were characterized by scanning electron microscopy, energy‐dispersive, X‐ray diffraction, X‐ray photoelectron, and Raman spectroscopy. RESULTS The as‐prepared flexible MnCo 2 O 4 /GP showed outstanding sensing performance for PC, as compared to GP, due to the excellent electrochemical properties of MnCo 2 O 4 . The proposed sensor exhibited a wide linear range of 4.64–1000 μM for electrochemical determination of PC with a low detection limit of 1.39 μM. Furthermore, MnCo 2 O 4 /GP was successfully applied for PC syrup and tablets with good accuracy results. CONCLUSIONS For the first time, the present study demonstrated the fabrication and utilization of MnCo 2 O 4 ‐modified graphene paper to develop a flexible and sensitive electrode for monitoring PC. © 2024 The Author(s). Journal of Chemical Technology and Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry (SCI).