Progress of Metal Oxide (Sulfide)-Based Photocatalytic Materials for Reducing Nitrogen to Ammonia

Table 1

Redox potentials of reducing N₂ to NH₃ [10–12]].

No.	Reaction	E^0 (V)
1		1.33^b
2		−0.42^a
3		−4.16^b
4		−3.2^b
5		0.55^b

^aE⁰ vs. NHE at pH 7; ^bE⁰ vs. NHE at pH 0.