Shift the Photocatalytic Activity of P25 TiO₂ Nanoparticles toward the Visible Region upon Surface Modification with Organic Hybrid of Phosphotungstate

Table 2

Comparison of photodegradation of dyes by using TiO₂-PTA-HMT-MB and reported P25 TiO₂-POMs.

Catalysts	Light	(mg/L)	Catalyst dosage (g/L)	Time (min)	Decolorization (%)	Ref.
TiW11Ti/TiO2	UV	Brilliant dye X-3B (40)	0.59	20	97.4	[22]
HP62W18O62/TiO2/β-zeolite	UV	MO (16)	1.4	180	65^a	[23]
Fe-PTA/P25	Simulated sunlight	MB (20)	H2O2^b	12	47^a	[24]
P25-PEI-P2Mo15V3	Simulated sunlight	MB (40)	0.25	115	75^a	[25]
P25 TiO2-PTA-HMT-MB	Sunlight	RhB (15)	0.1	180	75.3	This work
P25 TiO2-PTA-HMT-MB	Vis.	MB (30)	1.0	180	69.3	This work

^aValue was estimated from original figure of the reference; ^bvolume of solution is unknown. Note: PEI: polyethyleneimine; MO: methyl orange.