Synergistic formation of samarium oxide/graphene nanocomposite: A functional electrocatalyst for carbendazim detection.

Herein, an electrochemical sensor based on samarium oxide anchored, reduced graphene oxide (SmO/RGO) nanocomposite was developed for the rapid detection of carbendazim (CBZ). Different characterization methods were infused to deeply examine the morphology, composition, and elemental state of SmO/RGO nanocomposite. The SmO/RGO modified electrode exhibits an excellent electro-catalytic performance toward CBZ detection with a peak potential of +1.04 V in phosphate buffer solution (pH 3.0), which is superior to the RGO-, SmO- and bare- electrodes. This remarkable activity can be credited to the synergetic effect generated by the robust interaction between SmO and RGO, resulting in a well-enhanced electrochemical sensing ability. Impressively, the fabricated sensor shows improved electrochemical performance in terms of the wide working range, detection limit, and strong sensitivity. On a peculiar note, the electrochemical sensing performances of CBZ detection based on SmO/RGO nanocomposite demonstrate an extraordinary behavior compared to the prior documented electro-catalyst. In addition, the fabricated SmO/RGO sensor also displays good operational stability, reproducibility, and repeatability towards the detection of CBZ. Furthermore, it was successfully applied to the CBZ detection in food and environmental water samples with satisfactory recovery. In accordance with our research findings, the SmO/RGO nanocomposite could be used as an electro-active material for effectual electrochemical sensing of food and environmental pollutants.