Highly Efficient CeO2–CuCrO2 Composite Nanofibers Used for Electrochemical Detection of Dopamine in Biomedical Applications

Dopamine (DA) plays a crucial role in the functioning of human central nervous system, participating both physiological and psychological processes. It is an important research topic biomedical science. However, we need to constantly monitor concentration dopamine body, sensors required for this usually require good sensitivity order achieve fast accurate measurements. In project, CeO2 CuCrO2 composite nanofiber was prepared electrochemical detection dopamine. Coaxial electrospinning techniques were used prepare CeO2–CuCrO2 nanofibers. The characterization X-ray diffractometer (XRD), Raman, photoelectron spectroscopy (XPS) analyze composite’s crystal structure, vibrational bonds, elemental composition, while SEM TEM surface morphology, microstructure. outer layer found have average thickness 70.96 nm, fiber diameter 192.49 grain size about ~12.5 nm. BET analysis applied obtain specific area (25.03 m2/gm). proposed nanofiber-decorated disposable screen-printed carbon electrode acted as better sensor Moreover, electrocatalyst had limit detection, 36 nM with linear range 10 100 μM, its 6.731 μA μM−1 cm−2. addition, successfully real-time potential applications, namely, urine samples recovery results.