N-TiO_𝟐: Chemical Synthesis and Photocatalysis

Table 2

Surface % at/at for Ti, O, C, and N determined by XPS. Samples are prepared from precursors with different N : Ti molar ratios, fired at 250°C, 3 h, and 500°C 1 min. Ramp: 10°C/min.

Sample	Titanium%	Oxygen%	Carbon%	Nitrogen%	N/Ti × 100%
TiO2 N : Ti, 0	24	63	11	1.7	7.0
N-TiO2 N : Ti, 4 : 1	24	62	10	4.0	17
N-TiO2 N : Ti, 8 : 1	22	59	15	3.9	18