Solvothermal Synthesis of TiO₂ Photocatalysts in Ketone Solvents with Low Boiling Points

Table 3

Removal efficiency of MB in aqueous solution for different solvents.

Sample	Removal efficiency (adsorption) of MB solution in the dark for 60 min, %	Removal efficiency (photodegradation) of MB solution in visible light irradiation for 120 min, %	Overall removal efficiency of 180 min, %
Water (W)	Max at 100°C: 85.9	Max at 100°C: 72.7	Max at 100°C: 96.1
	Min at 500°C: 21.1	Min at 500°C: 13.5	Min at 500°C: 31.7
Acetone (Ac)	Max at 100°C: 38.7	Max at 100°C: 16.1	Max at 100°C: 48.6
	Min at 500°C: 21.1	Min at 500°C: 11.0	Min at 500°C: 29.9
Methyl ethyl ketone (MEK)	Max at 100°C: 85.0	Max at 100°C: 77.3	Max at 100°C: 96.6
	Min at 500°C: 18.2	Min at 500°C: 10.5	Min at 500°C: 26.8
Acetone : MEK (AMEK)	Max at 100°C: 42.6	Max at 200°C: 24.4	Max at 100°C: 55.9
	Min at 500°C: 16.6	Min at 500°C: 8.4	Min at 500°C: 23.6
TiO2 precursor	12.9	11.6	23.0