Table 3

Experimental parameters		Experimental results			Pseudo-first order model			Experimental results			Pseudo-first order model
		CR						BP4B
		ADS / %	PCD /%	k_app /min^-1		t_1/2 /min	R²/%	ADS/%	PCD/%	k_app/min^-1		t_1/2/min	R² /%
Initial dye concentration Dye/mg/L	20	10.50	95.02	0.041		16.906	88.1	3.89	97.24	0.026		26.456	95.6
	30	20.93	47.87	0.009		77.016	91.0	11.25	72.85	0.022		31.651	82.6
	40	15.26	34.10	0.006		115.525	91.0	2.12	68.87	0.015		45.904	98.2
	50	1.95	20.15	0.003		231.049	95.0	1.18	74.24	0.020		34.485	81.9
	60	3.86	14.25	0.002		346.574	86.00	33.11	51.71	0.011		62.446	95.9

R²: Regression coefficient, ADS: Adsorption and PCD: Photo catalytic degradation

Table 3: Kinetic parameters of photo catalytic degradation of dyes in aqueous solution as a function of initial dye concentrations.([ZnO]=0.5g/L (for CR) and 1g/L (for BP4B), pH =8, [CR]=[BP4B]=20-60mg/L, PH =8 T=298K, λ_max=365 nm and I=90j/cm²).