Graphene-based materials show promise for electrochemical sensors, but developing a straightforward synthesis method and understanding how their structure influences performance remains a challenge. Eco-friendly, the synthesis of graphene material like graphite nitrite (g-C3N4) immobilized with organic compounds like ferulic acid (FA) is recent research due to its stability, sensitivity, and selectivity. We proposed g-C3N4-FA (carbon nitride embedded ferulic acid) for electrochemical analysis. Ferulic acid is a phytochemical with polyphenolic functional groups utilized extensively as an anti-oxidant, anti-cancer, and anti-aging cosmetic agent. Only in organic media has FA recognized as a stable redox-active system; in aqueous solutions, it is irreversibly oxidized with linked chemical processes exhibiting vague redox peaks. It�s interesting to note that when FA-tethered g-C3N4 was electrooxidized, a distinct pair of redox peaks with surface-confined properties were visible at = 0.20 V versus Ag/AgCl, which corresponded to the ortho-quinone moiety of oxidized FA in pH 7 phosphate buffer solution (PBS). Cyclic voltammetry (CV) was used to analyze the GCE@g-C3N4-FA. FTIR, SEM, and Raman spectroscopy were used to characterize the physicochemical properties of g-C3N4-FA. The GCE@g-C3N4-FA showed excellent electrocatalytic activity toward dopamine oxidation. The mechanism and kinetics of the catalytic reaction were investigated by CV and amperometric i-t for highly selective sensing of dopamine without any interference from other biochemicals were validated. © 2025 Elsevier B.V., All rights reserved.