Photoelectrocatalytic Degradation of Methylene Blue Using BixTiOy-TiO2 Complex Films Electrode Supported Graphite Rod
The film electrode of BixTiOy-TiO2 composite loaded on high temperature graphite rod was prepared by solvothermal reaction and dipping and sintering method.The particles and electrode were characterized by X-ray diffraction (XRD),ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis),scanning electron microscopy (SEM) and energy disperses spectroscopy(EDS) method.Methylene blue as the target,photoelectric catalysis activity of electrode for methylene blue was studied.The influence of impressed voltage and number of coating layers on the removal efficiency of methylene blue were investigated.The experimental results showed the content of Bi12TiO20 in materials and absorptive capacity in visible area were increased due to added urea.The photoelectrocatalytic removal efficiency of 10 mg/L methylene blue can reach 83.63％ under 250 W haloid lamp irradiation for 120 min,and using graphite rod supported 3 coating layers N-doped BixTiOy-TiO2 thin film as working electrode,0.5 mol/L Na2SO4 as supporting electrolyte with 2 V impressed voltage.
BixTiOy-TiO2 complex filmphotoelectrocatalysisdegradationmethylene blue
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