Fig. 1

Schematic illustration of gold/silver core/shell formation and inhibition of core/shell formation by H2O2 using AuNPs in the (A) absence of iron(III) edta, and (B) presence of iron(III) edta.
Schematic illustration of gold/silver core/shell formation and inhibition of core/shell formation by H2O2 using AuNPs in the (A) absence of iron(III) edta, and (B) presence of iron(III) edta.