Ag-Au/Cu2O nanocomposites have been first and successfully synthesized.
Ag-Au/Cu2O nanocomposites exhibited an excellent performance toward electrochemical oxidation of H2O2.
Ag-Au alloys on the surface of Cu2O plays a key role in the sensing properties enhancement.
The possible mechanisms for the enhanced electrochemical activity of Ag-Au/Cu2O have been proposed.