Emerging insights into dysprosium vanadate wrapped graphene oxide nanocomposites for electrochemical detection of carbendazim in water and food samples

Carbendazim (CBM) is a pesticide commonly used as a fungicide to reduce infections and higher yield. However, CBM residues pose a significant environmental and health hazard, which requires the development of efficient detection methods. This study presents the synthesis of dysprosium vanadate wrapped graphene oxide (DyVO₄@GO) nanocomposite for CBM sensing and the prepared DyVO₄@GO was confirmed by XRD, XPS, FE-SEM, TEM, and EDX techniques. Obtained electrochemical results confirm that DyVO₄@GO-modified glassy carbon electrode (GCE) shows enhanced electron transfer, higher active surface area, and improved electrooxidation response towards CBM than the unmodified electrodes. Further, the Differential pulse voltammetry (DPV) study reveals a wide linear detection range of 0.01–248.5 μM, with a limit of detection of 1.46 nM. The sensor also exhibited admirable selectivity, reproducibility, and storage stability. Finally, the CBM sensing in water and fruit samples using DyVO₄@GO showed excellent recovery, proving its potential for environmental monitoring and food safety.