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. 2019 Sep 27;10:4421. doi: 10.1038/s41467-019-12385-1

Table 1.

Photocatalytic activities and oxygen vacancy concentrations of different N-doped TiO2

Entry NH3 treatment temperature (oC) Surface oxygen vacancy (×)1016 counts mol−1 Nitrogen concentration (wt%) Hydrogen evolution rate (μmol g−1 h−1) (270 °C)
1 550 1.86 0.53 1980 ± 95
2 600 8.74 1.41 2945 ± 93
3 620 13.33 4.60 3525 ± 122