Synthesis of C-N-S-Tridoped TiO₂ from Vietnam Ilmenite Ore and Its Visible Light-Driven-Photocatalytic Activity for Tetracyline Degradation

Table 2

Comparison of rate constant of the present catalyst with published papers.

Catalyst	Conditions	(%)	Rate constant (min^-1)	Ref.
N-TiO2	(1) Light source: white led, 46 W·m^2; (2) C^oTC: 5 mg·L^-1; (3) mcatalyst: 0.3 g·L^-1; (4) Time for dark adsorption: 45 min; (5) Time for photocatalytic degradation: 200 min	74.0	0.012	[49]
N-TiO2/rGO	(1) Light source: Xenon lamp, 300 W (); (2) C^oTC: 10 mg·L^-1; (3) mcatalyst: 1 g·L^-1; (4) Time for dark adsorption: 30 min; (5) Time for photocatalytic degradation: 60 min	98.0	0.057	[50]
Cu-TiO2	(1) Light source: Xenon lamp, 1000 W (); (2) C^oTC: 20 mg·L^-1; (3) mcatalyst: 0.02 g·L^-1; (4) Time for dark adsorption: 30 min; (5) Time for photocatalytic degradation: 240 min	90.0	0.010	[51]
(Mo, C)-TiO2/FTO	(1) Light source: Xenon lamp, 500 W (); (2) C^oTC: 20 mg·L^-1; (3) Time for dark adsorption: 60 min; (4) Time for photocatalytic degradation: 100 min	89.5	0.022	[52]
Ti0.9Zr0.05Sn0.05 O2	(1) Light source: mercury low pressure lamp, 36 W; (2) C^oTC: 30 mg·L^-1; (3) mcatalyst: 0.8 g·L^-1; (4) Time for dark adsorption: 30 min; (5) Time for photocatalytic degradation: 180 min	93.0	0.025	[53]
BiOCl/TiO2/spinel	(1) Light source: Xenon lamp, (); (2) C^oTC: 50 mg·L^-1; (3) mcatalyst: 0.6 g·L^-1; (4) Time for dark adsorption: 60 min; (5) Time for photocatalytic degradation: 180 min	92.0	0.004	[54]
TH-TiO2	(1) Light source: Xenon lamp, 45 W (); (2) C^oTC: 30 mg·L^-1; (3) mcatalyst: 0.6 g·L^-1; (4) Time for dark adsorption: 30 min; (5) Time for photocatalytic degradation: 150 min	100	0.023	The present work

where C_o and C_e is the initial and final concentration.