Facile fabrication of bismuth oxide anchored graphene oxide for the effective electrochemical sensing of diuron

Background: Diuron (DU), a weed controller widely used in the agricultural industry, prolonged conception of this agrochemical residue contaminated with environmental water bodies and soil sources could cause an acute impact on the human health system. This work utilized the electrochemical determination technique due to their rapid detection, outstanding sensitivity, and economical purpose. Methods: The electrochemical behavior of DU at the gamma-Bi2O3 microplates interconnected with sheet-like graphene oxide (GO) as a surface-modified electrode was scrutinized by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The surface-modified gamma-Bi2O3/GO/GCE elucidates superior electrocatalytic performance towards the irreversible oxidation response of diuron than the other surface-modified electrode in the phosphate buffer solution of 0.1 M. Significant findings: The gamma-Bi2O3/GO/GCE electrode displayed an extensive detection range of 0.1-631 mu M with a 0.751 mu M lower detection limit furthermore, noticeable 0.0280 mu A mu M-1 cm-2 sensitivity for diuron determination. In addition, the DPV experiment exposed that the gamma-Bi2O3/GO/GCE electrode achieves stupendous selectivity, durability, and acceptable feasibility of the real-time samples.