Displacement preparation-induced effects on structure of Ag-Pd nanobrushes for catalyzing oxygen reduction

► Displacement-induced effects on structure of Ag-Pd nanobrushes are studied. ► The structures of these nanobrushes are dependent on the displacement time. ► Ag-Pd nanobrushes with Ag-rich content and a Pd shell are prepared. ► Ag-Pd nanobrushes with a Pd shell are highly active for oxygen reduction.