Figure 11.
SEM images of (a) Undoped, 10 mol.% (b) Yb, (c) Y, (d) Sm and (e) La–doped CeO2 synthesized using the hydrothermal process at 200 °C for 24 h and followed by calcination in air at 500 °C for 2 h.
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.