Degradation of Gaseous Formaldehyde by Visible Light-Responsive Titania Photocatalyst Filter

Table 1

List of the experimental parameters.

Fabrication of TiO2-deposited film by EPD
Concentration of TiO2 (wt.%)	1.0
Concentration of alginate (wt.%)	0.2, 0.4 and 0.6
Working current (mA)	3, 5, 7 and 9
Sintered temperature (°C)	300, 400, 500, 600 and 700
Concentration of LiNO3 for modification (M)	0.1
Photocatalytic degradation for gaseous formaldehyde
Light source/power (W)	UVA and visible light (fluorescent lamps) × 5/8
Filter type	Original TiO2 filter (P-25) × 6 (background 1) Modified TiO2 filter (P-25 + LiNO3) × 6 (background 2)
Ambient temperature (°C)	22 and 26
Volume of test pollutant (μL)	0.5 (35% formaldehyde aqueous solution)
Heating temperature for test pollutant (°C)	40