Table 4.

Decolorization rates of all the TiO₂ nanocatalysts (Tma, Tmb, Tmc, Tmd and Tme) for five consecutive cycles under UV light irradiation.

Cycle	Tma	Tmb	Tmc	Tmd	Tme
I	71.4	74.2	78.6	83.3	85.9
II	70.1	72.7	76.9	80.6	84.8
III	69.0	71.4	74.3	78.5	83.4
IV	67.8	70.4	72.7	76.8	82.1
V	66.7	68.9	71.4	74.4	80.5