Synthesis of Cu2O on AlOOH/reduced graphene oxide for non-enzymatic amperometric glucose sensing

Abstract

Cu₂O/AlOOH/rGO nanocomposites were synthesized by employing AlOOH/rGO as the support for Cu₂O catalysts and then the nanocomposites were used for fabricating nonenzymatic glucose sensors. The morphology and composition of the nanocomposites were characterized by transmission electron microscopy and X-ray diffraction spectroscopy. Electrochemical investigations indicate that the nanocomposites possess an excellent performance toward glucose with a wide linear range of 5.0 μM to 14.77 mM, a sensitivity of 155.1 μA mM⁻¹ cm⁻² and a low detection limit of 2.6 μM. These results indicated that the Cu₂O/AlOOH/rGO modified electrode can act as a promising non-enzymatic sensor for glucose detection.