Figure 2.
HAADF-STEM images of (A, B) the 2Pt/ZrO2 catalyst calcined at 550 °C (2Pt/ZrO2-550) and (C) the same material after reduction at 250 °C (2Pt/ZrO2-550-R250). In image (A), the arrows point to the single atom Pt species.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.