Improving electrochemical and photocatalytic performance of C3N4/poly(thiophene)/poly (3,4-ethylene dioxy thiophene) nanocomposite

This study introduces a novel hybrid nanomaterial, C3N4-PTh-PEDOT, synthesized through a chemical oxidative technique. The research addresses the need for materials with enhanced catalytic properties and stability for diverse applications. The C3N4-PTh-PEDOT material exhibits significant improvements in catalytic performance, suitable for applications such as organic binder-free sources, modifications of glassy carbon electrode (GCE) electrodes, and as a reducing agent-free photocatalyst. The material demonstrates rapid electron transfer and excellent electrochemical stability, thanks to its core–shell structures and the interaction between the conjugated polymers PTh and PEDOT with C3N4. This hybrid material achieves 97.47% degradation of methyl blue (MB) in 80 min by minimizing electron–hole recombination, enhancing photocatalytic activity. Additionally, the C3N4-PTh-PEDOT-modified GCE enables sensitive detection of oxyfendazole (OFZ) using differential pulse voltammetry, showing a linear response within the concentration range of 0.32 × 10−7 to 3.7 × 10−8 M, with a sensitivity of 3.156 × 10−8 M µA−1 and a limit of quantification of 10.7787 × 10−8 M µA−1.