Monitoring organic pollutants in aquatic systems is crucial to safeguarding environmental safety and protecting public health. In this study, we synthesized an Ag2WO4-decorated graphitic carbon nitride (Ag2WO4/g-CN (1 : 1)) composite and employed it as an effective electrocatalyst for the highly efficient electrochemical detection of metol (MTL). Structural and compositional characterization studies confirmed the effective integration of Ag2WO4 with g-CN, resulting in enhanced electrical conductivity, an increased surface area, and greater availability of active sites. The Ag2WO4/g-CN (1 : 1)-modified screen-printed carbon electrode (SPCE) demonstrated an extensive linear detection range (0.005-1060 μM) and a low detection limit of 5.6 nM by differential pulse voltammetry (DPV) analysis. The sensor exhibited remarkable selectivity, reproducibility, and long-term stability, yielding reliable and satisfactory results in both river and tap water samples. These results indicate that the Ag2WO4/g-CN (1 : 1) composite is a promising electrochemical platform for the rapid and accurate detection of organic pollutants in environmental water systems.
Elaiyappillai et al. (Thu,) studied this question.