Polypyrrole-carbon black/BiPO4 composites as efficient electrocatalysts for sensitive detection of furazolidone: A cost-effective approach for environmental monitoring

Designing a more efficient electrocatalyst remains essential for developing a new sensor probe to detect environmental toxicity efficiently. This study employs the polypyrrole‑carbon black/bismuth phosphate (PPy-CB/BiPO4) composites approach to tune the electrocatalytic performance for sensitive and selective monitoring of hazardous furazolidone (FZD). The prepared PPy-CB/BiPO4 composites have been well-characterized using various material analysis and electro-analytical techniques. The prepared PPy-CB/BiPO4 composites were coated on a flat, polished glassy carbon electrode (GCE) as an active sensing substrate to achieve a dynamic detection range. As a result, the fabricated working electrode for electrochemical monitoring of FZD has reliable detection parameters, including a wide linear range (0.01–1010.6 µM), excellent selectivity and sensitivity (0.245μA μM−1 cm−2), and low detection limit (LOD, 6.0 *10−9 M). This novel sensor was applied to FZD-contaminated real-samples as a proof-efficient electrode platform and realized a satisfactory outcome. This study provides insights and a new pathway for exploring 5% PPy-CB/BiPO4 composites to produce a simple and cost-effective FZD monitoring.