In this study, we created a simple, low-cost material made of g-C3N4 adorned CuZn flower-shaped nanoparticles that was quickly produced in a single step using the hydrothermal process and had a large active surface area. UV-vis, FT-IR, XRD, SEM with EDX and HR-TEM spectral analyses and electrochemical techniques including Cyclic Voltammetry, Differential Pulse Voltammetry (DPV), and amperometry employed for sensor research were used to analyse and characterise g-C3N4 decorated CuZn. The UV-vis spectrum showed an absorption peak indicates the development of g-C3N4@CuZn Nps. The band gap energy of g-C3N4, CuZn bimetallic Nps and g-C3N4@CuZn Nps were 2.7 eV, 3.8 eV and 3.6 eV. FT-IR spectra for g-C3N4 showed sharp peak at 485 cm -1 and broad peak at 3542 cm-1 also gives further evidence to ensure the construction of g-C3N4 in CuZn bimetallic Nps. In XRD analysis of g-C3N4@CuZn Nps displays characteristic peaks located as 27.50 43.30, 50.40 can be indexed as a face centered cubic (fcc) structure. SEM images of pure g-C3N4 was layered structure, CuZn bimetallic Nps was Tremella-like structure, and g-C3N4@CuZn Nps was nano flower like structure.

g-C3N4 decorated CuZn flower like nanoparticle, hydrothermal method, electrochemical sensor, Dopamine, Cyclic Voltammetry, amperometry.