Atomic concentration of N atoms (at%) of N–TiO₂, N–H–TiO₂ and H–N–TiO₂.

Sample	Ns@396 eV	Ni@400 eV	Ni@403 eV	Total
N–TiO2	0.08	0.37	0.11	0.56
N–H–TiO2	—	0.61	0.11	0.72
H–N–TiO2	0.09	0.40	0.11	0.6