Fig. 2
From: Direct observation of the nanoscale Kirkendall effect during galvanic replacement reactions
Chemical and structural characterization of Ag/Au nanostructures synthesized ex situ. a Scanning TEM annular dark field image and corresponding energy dispersive X-ray spectroscopy (EDX) chemical maps of nanostructures synthesized ex situ at 23 °C. b Nanostructures synthesized at 100 °C after adding 0.3, 1.5, and 4.0 mL of 0.1 mM HAuCl4. c EDX spectra for samples synthesized at 23 and 100 °C (with 1.5 mL of 0.1 mM HAuCl4 added) showing the Cl K and Ag L lines. d Selected area electron diffraction from a single nanostructure in both samples (with 1.5 mL of 0.1 mM HAuCl4 added), where diffraction spots for AgCl44 are frequently found in the 23 °C sample because of lower solubility of AgCl at 23 °C than at 100 °C
