Photoetching of Immobilized TiO₂-ENR₅₀-PVC Composite for Improved Photocatalytic Activity

Table 1

(a) Pseudo-first-order rate constants for the adsorption and photocatalytic degradation of 12 mg L⁻¹ MB in aqueous solution by TiO₂-5 g ENR₅₀-PVC formulations with different amount of PVC and (b) TiO₂-ENR₅₀-0.8 g PVC with different amount of ENR₅₀ as well as their respective relative adhesion strength upon the glass plates. TiO₂ powder was maintained at 12 g.

PVC (g)	ENR sol. (g)	Pseudo-first-order rate constants (min^−1)		Relative strength (%)
		Adsorption	Photocatalysis
(a)
0.0	5	0.0049	0.0180	0.00
0.1	5	0.0047	0.0165	—
0.2	5	0.0048	0.0176	5.97
0.3	5	0.0050	0.0180	—
0.4	5	0.0054	0.0184	12.62
0.5	5	0.0055	0.0186	—
0.6	5	0.0056	0.0189	15.75
0.7	5	0.0064	0.0198	—
0.8	5	0.0068	0.0205	29.86
0.9	5	0.0034	0.0172	—
1.0	5	0.0028	0.0094	20.50
(b)
0.8	0.0	0.0045	0.0207	0.00
0.8	1.0	0.0048	0.0208	15.21
0.8	2.0	0.0049	0.0276	18.21
0.8	3.0	0.0045	0.0189	22.54
0.8	4.0	0.0052	0.0185	25.26
0.8	5.0	0.0068	0.0205	29.86