Abstract
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 high-radius 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 μM and sensitivity is 3.234 μA μM−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/cm2 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.
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