Preparation and performance analysis of Bi2WO6-N-TiO2 nanotube electrodes
Bi2WO6-N-TiO2 nanotube electrodes were prepared by hydrothermal method and low temperature plasma method,which were characterized by SEM,EDS,XRD,UV-Vis-DRS,CV and I-t,and applied to the degradation of ciprofloxacin antibiotic wastewater.The results showed that Bi2WO6 nanosheets were successful-ly loaded onto the surface of TiO2 nanotube electrode,and the co-modification of Bi2WO6 and N significantly en-hanced the absorption of visible light by TiO2.Electrochemical analysis results showed that the modified TiO2 nanotube electrode had excellent photoelectric conversion performance,and the photocurrent density was about 5-9 times that of the modified TiO2 nanotube electrode.The degradation of ciprofloxacin by Bi2WO6-N-TiO2 nanotube electrode followed the first-order kinetic reaction equation,in which 0.8 mmol Bi2WO6-N-TiO2 nano-tube electrode had the highest degradation rate,reaching 0.00683 min-1.
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