Chiral Silver–Platinum Hollow Nanostructures: Seedless Synthetic Strategy and Electrochemical Enantioselective Detection

-formed Ag-rich nanoparticles and nanowires act as sacrificial templates for subsequent Pt growth, leading to hollow nanostructures with Ag-rich inner and Pt-rich chiral surfaces. The growth mechanism can be extended to guide the synthesis of similar chiral Ag-Ir hollow nanostructures. The chiral Ag-Pt hollow nanostructures, especially nanotubes, are fully functional for electrochemical enantioselective detection of tryptophan enantiomers. Our work provides a feasible strategy for fabricating catalytically active noble metals with hierarchical chiral nanostructures.