An Overview on the Photocatalytic Activity of Nano-Doped-TiO_𝟐 in the Degradation of Organic Pollutants

Table 8

Effect of photocatalyst dosage on the photocatalytic activity of nano-doped-TiO₂ in the photocatalytic degradation of various organic pollutants.

Type of dopant	Doped TiO2 preparation method	Range of photocatalyst dosage (g/L)	Optimum photocatalyst loading (g/L)	Organic pollutant	Initial pollutant concentration (mg/L)	Light source	Irradiation time (h)	Degradation efficiency (%)	Reference
Sn	Sol gel/dip coating	5–15	12.5	Orange-G	50	UV	1	99.1	[122]
Zr	Sol gel	100–500	2.0	4-chlorophenol	250	UV	—	—	[121]
Ba	Sol gel	100–500	2.0	4-chlorophenol	250	UV	—	—	[10]
Fe	Hydrothermal	0.25–1.25	1.0	Azo fuchsine	10	Ultrasonic	1	60	[123]
	Sol gel	0.5–2.0	1.5	Reactive Blue 4	70	Ultrasonic	1	90	[110]
Ag	Photo reduction	326–2608	3.0	Direct Red 23	326	UV	2.5	55	[124]
C	Sol gel	0.5–4.0	1.0	Methylene blue	10	Solar lgiht	1.67	100	[116]
P	Sol gel	0.2–1.2	0.4	Rhodamine B	12	Sunlight	4	93	[119]
Pr	Sol gel	0.0–1.2	1.0	Phenol	50	UV	2	96.5	[111]
	Sol gel	0.5–6.0	3.0	Methyl orange	20	UV	0.5	90.5	[58]