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.
(a) The free energy diagrams of the Fe-N4 model in catalytic process. (b) Absorbance-time curve of TMB chromogenic reaction catalyzed by Fe-Nx SANs and the corresponding magnified initial linear portion. (c) Specific activities of Fe-Nx SANs.
