Research On The Efficiency And Mechanism Of The Degradation Of Ofloxacin Based On UVA-LED/TiO₂ Anode Photocatalytic Fuel Cell

At the 21 st century,the rapid development of industry,agriculture,animal husbandry antibiotics is finding wider and wider application in all fields.Wastewater treatment process,natural purification,and biodegradation cannot effectively remove antibiotics from water environment,A substantial accumulation of surface water and underground water pollution.In this paper,through optimizing the preparation conditions of TiO₂ doped with nitrogen,fluorine,construct a kind of photocatalytic TiO₂-Pt fuel cells to study the influential factors and mechanism of degradation of ofloxacin and implement part of the energy recovery.Summarized as the following points:（1）Doping nitrogen,fluorine,which was prepared by anodic oxidation,Oxidation voltage,oxidation time,calcination temperature was studied the influence of optical parameters such as the anode.By scanning electron microscope（SEM）,X-ray diffraction（XRD）,X-ray photoelectron spectroscopy（XPS）characterization analysis and the optimal conditions for preparation of oxidation time for 60 min、oxidation voltage 25 v、calcination temperature is 500 ℃.（2）Tectonic TiO₂-Pt photocatalytic fuel cell,with ofloxacin as the substrate degradation effect research.In 0.1 mg/L to 1 mg/L concentration range,between the initial concentration,the greater the ofloxacin degradation efficiency has been increased.The degradation of ofloxacin efficiency is proportional to the light intensity.In the partial neutral and in bisexual better efficiency,under the condition of the solution pH of 7,ofloxacin degradation effect is best.he higher the dissolved oxygen,degradation rate is higher,the faster the reaction rate.（3）Choose tert-butyl alcohol,isopropyl alcohol,respectively to benzoquinone as hydroxyl radicals,hole,the super oxygen free radical inhibitor.When sufficient oxygen UVA-LED/TiO₂ NTs photocatalytic degradation of ofloxacin fuel cells play a major role in the process of active substances for holes（h +）and super oxide free radical（O₂-）,hydroxyl radicals（HO）,is not the main active substances of the degradation process.（4）Adopted the fill factor（FF）characterization of the performance of the battery and energy recovery.Substrate initial concentration,electrolyte concentration,pH and aeration on TiO₂-Pt photocatalytic effect the performance of fuel cell.The concentration of the electrolyte in a certain range can improve the performance of the battery,the influence of the substrate concentration was small.In neutral or alkaline conditions,performance is superior to the acidic conditions.Battery under the condition of oxygen optimal performance,the air next time,under the condition of nitrogen is the worst.