Enhanced Photocatalytic Activity for Degradation of Methyl Orange over Silica-Titania

Table 3

The kinetics constants and regression coefficients of methyl orange photocatalysis on Rx-SMT treated by H₂SO₄ solution.

Photocatalyst	Kinetic constant (min^−1)	r ^2	Ratio of K to 𝐾P25
Rx = 0, acid	0.0094	0.9627	0.4947
Rx = 0.05, acid	0.0295	0.9763	1.5526
Rx = 0.1, acid	0.0405	0.9876	2.0558
Rx = 0.2, acid	0.0194	0.9873	1.0210