UV-Vis spectroscopy monitored the Photocatalysis of FLU using ZIF-8 (Figure ) and ZnO@N-doped C (Figure ). ZnO@N-doped C shows high photocatalysis for FLU compared to ZIF-8 (Figure ). The performance can be increased with the increase of the catalyst loading (Figure ). ZnO@N-doped C successfully removes the dye using adsorption and photocatalysis (Figure ). The catalytic performance is still high with the increase of the dye loading (Figure ). The photocatalysis without and with ZIF-8 and ZnO@N-doped C using pseudo-first-order reaction and fitting plot of FLU degradation was compared as shown in Figure . Data fitting shows the rate of 9×10 -4 , 43×10 -4 , and 20.6×10 -3 for no catalyst, ZIF-8, and ZnO@N-doped C, respectively (Figure ). ZnO@N-doped C exhibits a five times higher rate compared to ZIF-8 (Figure ). The increase of the rate constant reveals the increase of degradation, indicating that the degradation efficiency of FLU can be ordered as ZnO@N-doped C > ZIF-8 > no catalyst. The concentrations of MeB decreased from 7.5% after adsorption and 4 h UV exposure to 1.1%, 0.7% and < 0.1% in the presence of 50 mg/L, 100 mg/L and 200 mg/L, respectively. Figure shows the percentages of dye removal after adsorption and UV photodegradation. The removal of MeB dye after adsorption and catalysis was approximately 98.9%, 99.3% and < 99.9% on 50 mg/L, 100 mg/L and 200 mg/L, respectively (Figure ). The concentrations of FLU after adsorption and degradation were 31.3%, 16.7%, and 3.9% in the presence of 50 mg/L, 100 mg/L, and 200 mg/L of ZnO@N-doped C, respectively. The FLU removal efficiencies after adsorption and degradation on 50 mg/L, 100 mg/L and 200 mg/L of ZnO@N-doped C were 68.3%, 83.3%, and 96.1%, respectively (Figure ).