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.
Free energy diagram of the proposed water oxidation cycles C and D involving high oxidation states of {Ru4}. Free energy differences given in eV; ΔGH2O is the free energy change for the reaction 2H2O ⟶ O2 + 2H2 at pH = 0 and room temperature. Reproduced with permission from [56]; copyright 2013 National Academy of Science of the U.S.A.
