Metal-Free Electrochemical Dopamine Sensing Using a g-C₃N₄/Polymethyl Thymol Blue Nanohybrid.

ABSTRACT: We report a highly sensitive and interference-free electrochemical sensor for dopamine (DA) detection in the presence of uric acid (UA) and ascorbic acid (AA), based on an in situ deposited graphitic carbon nitride (g-C₃N₄) and polymethyl thymol blue (PMTB) nanohybrid modified screen-printed carbon electrode (SPCE). The as-fabricated g-C₃N₄/PMTB/SPCE was thoroughly characterized using various physicochemical techniques. The electrochemical behavior of the modified electrode was systematically investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The g-C₃N₄/PMTB/SPCE exhibited excellent electrocatalytic activity toward the selective oxidation of DA under optimized experimental conditions, including

SUBMITTER: Sekar S 

PROVIDER: S-EPMC12937753 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature