Ultrasensitive electrochemical determination of tyrosine based on the α-Fe2O3@Co3O4-NRGO modified electrode

Schematic preparation of α-Fe2O3@Co3O4-NRGO/GCE and tyrosine detection The scheme depicts the preparation of cubic α-Fe2O3 nanoparticles via hydrothermal method and composition with Co3O4-NRGO to obtain α-Fe2O3@Co3O4-NRGO ternary nanocomposites. Then, the ternary composite suspension was cast on a glassy carbon electrode (GCE), and the resulting α-Fe2O3@Co3O4-NRGO/GCE was successfully employed to ultrasensitive trace tyrosine detection in nanomolarity.