Durability of Ag-TiO₂ Photocatalysts Assessed for the Degradation of Dichloroacetic Acid

Table 1

Photonic efficiency values of the employed photocatalysts (e.g., as given in Figures 2 and 3).

		pH 3							pH 10
Photocatalyst		Rate			Intensity	Photonic			Rate			Intensity	Photonic
[0.5 g/L]		[mol/Lh]			[mol/Lh]	Efficiency (%)			[mol/Lh]			[mol/Lh]	Efficiency (%)
		1.00E-04							1.00E-04
		Run 1	Run 2	Run 3		Run 1	Run 2	Run 3	Run 1	Run 2	Run 3		Run 1	Run 2	Run 3
P25		9.58	3.26	2.65	3.39E-02	2.83	0.96	0.78	3.90	2.60	1.70	3.74E-02	1.04	0.70	0.45
P25-Ag%	0.1	6.00	4.30	2.60	3.39E-02	1.77	1.27	0.77	4.86	2.39	1.95	3.74E-02	1.30	0.64	0.52
	0.2	11.42	3.48	3.00	3.39E-02	3.37	1.03	0.89	2.84	1.84	1.24	3.74E-02	0.76	0.49	0.33
	0.35	8.50	6.40	3.00	3.39E-02	2.51	1.89	0.89	2.16	0.95	0.95	3.74E-02	0.58	0.25	0.25
	0.5	7.22	3.88	3.33	3.39E-02	2.13	1.15	1.98	4.20	3.20	2.59	3.74E-02	1.12	0.85	0.69
	1	5.35	3.90	3.53	3.39E-02	1.58	1.15	1.04	5.61	2.78	2.00	3.74E-02	1.50	0.74	0.53
	2	5.26	3.84	3.74	3.39E-02	1.55	1.13	1.10	3.12	2.16	1.48	3.74E-02	0.83	0.58	0.40
	0.35	8.03	5.45	2.35	3.39E-02	2.37	1.61	0.69
	(4 mM Cl)
	0.35	12.50	6.17	8.54	3.39E-02	3.69	1.82	2.52
	Washed
P25		9.32	3.14	0.75	3.39E-02	2.75	0.93	0.22
before 3rd run
(4 mM Cl)
P25		12.30	9.37	9.31	3.39E-02	3.63	2.77	2.75
Washed
TiO2		11.40	9.07	6.73	3.39E-02	3.37	2.68	1.99
colloid
TiO2 colloid		11.20	8.92	6.44	3.39E-02	3.31	2.63	1.90
before 3rd run
(4 mM Cl)