Eutectic solvent-mediated synthesis of manganese molybdate nanosheets: Rapid and real-time electrochemical detection of p-methylaminophenol sulfate(metol)

The present study explores the design of MnMoO4 modified sensing platform for the electrochemical detection of metol. The green synthesis of MnMoO4 nanosheets was accomplished by a low-temperature deep eutectic solvents (DES) assisted hydrothermal protocol. According to structural and electrochemical studies, the large surface area and pore volume of the MnMoO4-based working electrode assembly provided a conduit for the anchoring of the target analytes. Under optimized electrochemical conditions, the modified sensor demonstrated an exceptionally low detection limit (LOD = 0.98 nM) with a sensitivity of 88.8 μA μM−1 cm−2 within a substantial linear working range from 0.01 to 375.6 μM by differential pulse voltammetric (DPV) technique. Benefiting from the significantly improved stability, sensitivity, and reproducibility, the proposed MnMoO4 electrocatalyst showed amplified current responses of metol. The possibility of metol detection without any foreign interference and % recovery between ±99.20–99.90 % opens up new prospects for the efficacious on-site detection of metol.