Nb-Doped TiO₂ Photocatalysts Used to Reduction of CO₂ to Methanol

Table 3

Methanol concentrations obtained, quantified by GC-FID.

Photocatalytic powder (% Nb (w/w))	Methanol yield (µmol/g-cat·h)	Photocatalytic powder (% Nb (w/w))	Methanol yield (µmol/g-cat·h)
Blank (photolysis)	0	P25	1.83
Nb–TiO2 0.0%	0	Nb–TiO2 0.0% SPT	0
Nb–TiO2 0.5%	0.54	Nb–TiO2 0.5% SPT	<0.01
Nb–TiO2 1.0%	0.76	Nb–TiO2 1.0% SPT	0.16
Nb–TiO2 2.5%	1.00	Nb–TiO2 2.5% SPT	0.40