Development of Visible Light-Responsive Sensitized Photocatalysts

Table 2

The photodegradation effects of target contaminants by sensitized photocatalysts under visible light irradiation.

No.	Catalyst	Reaction conditions	The light source	Target contaminants	Degradation rate	References
(1)	Ru-complex-sensitized TiO2	Catalyst: [TiO2] = 0.5 g/L, Ru-complex = 3 μM; pH = 3; 2-propanol as sacrifice electron donors; [CCl4] = 1 mM, N2-saturated	A 450 W Xe-arc lamp with an UV cut-off filter (𝜆>420 nm)	CCl4	Dechlorination quantum yield, ΦCl^−=10^−3	[46]
(2)	Ru-complex-sensitized 0.2 wt% Pt/TiO2	Catalyst: [TiO2] = 0.5 g/L, Ru-complex = 10 μM; pH = 3; 0.1 M isopropyl alcohol as sacrifice electron donors; [CCl4] = 1 mM, initially N2-saturated	A 450 W Xe-arc lamp with an UV cut-off filter (𝜆>420 nm)	CCl4	Initial dechlorination rates is 4.7 μM/min	[38]
(3)	Ru-complex-sensitized TiO2	Catalyst: 0.3 g; 150 mL of CCl4 saturated aqueous solution (pH 7), containing 5.0 mM of KI as sacrifice electron donors	A 100 W tungsten lamp (𝜆>450 nm)	CCl4	Rate constant is 0.446 μm min^−1g-catalyst^−1	[37]
(4)	Ru-complex-sensitized TiO2	Catalyst: 0.3 g; 150 mL of CCl4 saturated aqueous solution (pH 6.5–7.0), containing 5.0 mM of KI as sacrifice electron donors, initially N2-saturated	A 100 W tungsten lamp (𝜆>450 nm)	CCl4	Rate constant is 0.585 μM min^−1 g-catalyst^−1	[40]
(5)	Polyaniline-sensitized TiO2	Catalyst: 100 mg; 50 mL H2O without sacrifice electron donors, [MB] = 10 mg/L	Natural light irradiation for 90 min between 11.00 a.m. and 1.00 p.m.	Methylene blue (MB)	Decolorization efficiency is 80%	[2]
(6)	CuPc sensitized-TiO2	Catalyst: 0.7 wt% CuPc/TiO2; the ratio of TiO2/CuPc to PS is 2.0 wt % in the composite film	Three 8 W fluorescent lamps (310 nm <𝜆< 750 nm)	Plastic (PS)	6.9% weight loss for composite film after 250 h	[45]
(7)	Ru-complex-sensitized TiO2	Catalyst: [TiO2] = 1 g/L, c (sensitizer) = 1×10^−5 mol/L; [terbutryne] = 2×10^−5 mol/L; pH = 3	A 500 W high-pressure xenon lamp with a cut-off filter (𝜆>420 nm)	Herbicide terbutryne	100% after 4 h	[44]
(8)	1 wt% poly(fluorene-co-thiophene) (PFT)-sensitized TiO2	Catalyst: 50 mg; 50 mL aqueous phenol solution with an initial concentration of 10 mg/L	A 250 W GaI3 lamp with a cut-off filter (400 nm < λ < 700 nm)	Phenol	74.3% after 10 h	[51]