Single-atom iodine anchored layered graphitic carbon nitride: Dual functional Electrocatalyst for acetaminophen detection and oxygen evolution reaction

Developing highly effective bifunctional electrocatalysts for acetaminophen (ACP) detection and oxygen evolution reaction (OER) is significant and challenging. Thermal decomposition methods were used to create a highradius and high electronegative iodine doped porous graphitic carbon nitride (IO-gCN) bifunctional electrocatalyst in here. The synergistic effect of pores nature, active sites and nanosheet-like structure, IO-gCN exhibit better ACP detection and OER activity. Under optimized conditions, IO-gCN detection limits (LOD) for ACP is 4.6 nM with a linear range of 0.2-80 mu M and sensitivity is 3.234 mu A mu M -1 cm -2 . The proposed nanosheets decorated disposable screen-printed carbon electrode (SPCE) also applied real samples (tap water and human urine sample) to obtained better recovery results. The electrochemical linear sweep voltammetry (LSV) exhibited a lower over potential (270 mV) and small Tafel slope value (144 mV/dec) at 10 mA/cm 2 for IO -2 (2 wt% doped gCN) nanosheets under alkaline medium (1 M KOH). Additionally, the chronoamperometry (CA) test and the cyclic voltammetry 3000th cycle test both produced results for long-term stability and hybrid stability. This study offers a straightforward and esoteric method for creating bifunctional electrocatalysts that are free of metal.