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Table 2 Specific surface area (SSA), bandgap, phase composition, and results from the photocatalytic tests using MO and RhB as model pollutants under UV and natural sunlight using TNT powders and reference TiO₂ powder

From: Titania nanotubes prepared by rapid breakdown anodization for photocatalytic decolorization of organic dyes under UV and natural solar light

				Methyl orange, MO								Rhodamine B, RhB
				UV				Sunlight				UV				Sunlight
Cat	Ph	SSA	Bandgap	R _eff	C _(end)	Reaction kinetics		R _eff	C _(end)	Reaction kinetics		R _eff	C _(end)	Reaction kinetics		R _eff	C _(end)	Reaction kinetics
		m² g⁻¹	eV	%	mg L⁻¹	κ ₁ h⁻¹	R ²	%	mg L⁻¹	κ ₁ h⁻¹	R ²	%	mg L⁻¹	κ ₁ h⁻¹	R ²	%	mg L⁻¹	κ ₁ h⁻¹	R ²
TNT	A	179.2	3.04	13.9	6.6	0.04	0.50	80.3	1.1	0.82	0.97	35.7	5.5	0.15	0.98	93.2	0.7	1.29	0.93
250	A + B	123.3	3.03	35.6	6.7	0.15	0.99	91.1	1.0	0.89	0.97	14.2	8.4	0.06	0.94	84.6	1.4	0.63	0.99
350	A	86.5	3.07	47.2	5.6	0.24	0.98	76.2	2.6	0.46	0.87	28.6	6.2	0.13	0.94	57.7	4.3	0.31	0.94
450	A + B	70.4	3.14	38.3	7.4	0.15	0.96	87.0^a	1.7	1.05	0.97	42.9	5.6	0.18	0.98	91.1	1.0	0.80	0.98
550	A + R	35.4	2.88	7.1	9.6	0.03	0.97	15.7	9.7	0.07	0.85	21.0	7.5	0.07	0.92	75.5	2.3	0.48	0.99
TiO₂	A	10.2	3.18	97.5	0.3^*	2.78	0.89	95.1^b	0.4^*	3.02	0.98	96.1	0.2	1.05	0.99	97.9	0.2	1.22	0.89

Cat catalyst, Ph phase, R_eff removal efficiency, A anatase, R rutile, B brookite, TiO₂ reference powder
^aAfter 2 h
^bAfter 1 h
^*Below the detection limit

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