Effect of metal precursor on the growth and electrochemical sensing properties of Pt–Ag nanoboxes

Pt-Ag nanoboxes prepared using a Pt(4+) versus Pt(2+) precursor show not only stoichiometric, but also catalytic effects on the nanobox growth, resulting in metal content and surface morphology differences. Electrochemical studies on these nanoboxes reveal the combined importance of composition and hollow, rough-walled nanostructure for improved detection of electroactive molecules.