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.
Sol-Gel-derived ceria gas sensor of O2: (a) SEM image of ceria, and (b) dynamic response of ceria (x = 0) and xZrO2-ceria (x = 10, 20) to different concentrations. Reprinted/adapted with permission from Ref. [63]. 2019, Elsevier. Ceria as NO2 sensor: (c) SEM image of ceria particles, and (d) gas response of ceria, NiO, and their composite to 25 ppm of NO2 at different operating temperatures. Reprinted/adapted with permission from Ref. [64]. 2022, Elsevier.
