Synergistic degradation of chlorophenol pollutants by a photo-enzyme integrated catalyst

Laccase enzyme was immobilized on inert support followed by doping this composite with Cu for a more effective chlorophenol inactivation kinetics in the light and in the dark. To be specific, hollow titanium dioxide (H-TiO 2 ) was prepared by using dendritic mesoporous silica nanoflowers (DMSNs) as hard template. Hollow titanium dioxide (H-TiO 2 ) was used to prepare Cu-H-TiO 2 . The support structure stabilized laccase providing Lac@Cu-H-TiO 2 with higher pH, thermal, and irradiation stability. Lac@Cu-H-TiO 2 degraded 2,4-dichlorophenol (2,4-DCP) under visible light to about 95% within 12 h and was fairly stable up to 10 cycles. The stability data of the innovative compound addressed in this study is documented. The photo-active based enzyme integrated photocatalyst are shown in this pioneering study as promising candidates for phenolic pollutant degradation . This is based on the very high activity of enzymes compared to other chemical reagents.