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

Table 1

Properties of metal-doped TiO₂ photocatalysts under various conditions.

Type of metal dopant	(Metal dopant/TiO2) molar ratio	Preparation of doped TiO2	Starting material of TiO2	Starting material of metal dopants	Crystallite size (nm)	Phase	BET surface area (m^2/g)	Reference
Fe	0.090	Hydrothermal	TTB	FeCl3, FeCl2	11.40	Anatase	101.40	[50]
	0.100	Hydrothermal	(Ti(OC4H9-n)4	Fe(NO3)3•9H2O	14.50	Anatase	102.00	[53]
	1.200	Hydrothermal	TiCl3	FeCl3•6H2O	23.70	Anatase	55.50	[55]
	0.007	Sol gel	TTIP	Fe(NO3)3	—	Anatase	175.00	[54]
	0.700	Sol gel/microemulsion	TTIP	Fe(NO3)3	12.70	Anatase	83.00	[52]
	0.980	Sol gel	Ti(OPr^i)4	Fe(NO3)3•9H2O	9.00	Anatase	126.10	[49]
Pt	0.800	Impregnation	TiO2 Degussa P25	PtCl2	22.28	Anatase	29.17	[57]
	1.000	Impregnation/Photodeposition	TiO2 Degussa P25	H2PtCl6	20.00	Anatase	107.00	[64]
	1.500	Impregnation	TTIP	H2PtCl6	31.00	Anatase	19.10	[61]
	0.500	Photochemical deposition	TBOT	H2PtCl6•6H2O	9.15	Anatase	116.10	[60]
	1.500	Photochemical reduction	TNBT	H2PtCl6•6H2O	—	Anatase	118.70	[58]
Ce	0.100	Sol gel	TiCl4	H2PtCl6•6H2O	14.00	Anatase	68.00	[59]
	0.010	Hydrothermal	Ti(SO4)2	Ce(NO3)4	—	Anatase	454.00	[63]
	4.000	Reflux	Ti(OBu)4	Ce(NO3)4	8.30	Anatase	—	[65]
V	1.000	Sol gel	Ti(OBu)4	VO(OPr)3	12.00	Anatase	107.00	[62]