Experimental parameters
 
Experimental results Pseudo-first order model
Adsorption efficiency
(%)
Photocatalytic degradation efficiency (%) Kapp (min-1) t1/2 (min) R2 (%)
 
 Band gap of
semiconductors (eV)
Zn O (3.2eV) 10.510 95.018 0.044 15.753 94.4
Ti O2 (3.3eV) 13.479 93.342 0.045 15.403 98.5
Ce O2(2.6eV) 8.000 14.928 0.003 231.049 49.0
Al2O3 (5.6eV) 4.207 7.905 0.001 693.147 88.7
Fe2O3(3.7eV) 5.151 4.723 0.001 693.147 34.0
Table 3: Kinetic parameters of photocatalytic degradation of CR as a function of band gap of semiconductors ([CR]= 20mg/L, [Catalyst]= 0.5g/L, pH=8, T=298K, λmax=365 nm and I=90 J /cm2).