Effects of Ar or O2 Gas Bubbling for Shape, Size, and Composition Changes in Silver-Gold Alloy Nanoparticles Prepared from Galvanic Replacement Reaction
Figure 3
Typical TEM images of (a) polygonal Ag seeds and ((b)–(d)) Ag-Au bimetallic products after heating Ag seeds/HAuCl4/PVP/EG solution for 10–60 min under O2 gas bubbling. Scale bars of TEM images (a) and (b) are the same as those of (c) and (d), respectively.