第23卷第2期2023年2月过程工程学报TheChineseJournalofProcessEngineeringVol.23No.2Feb.2023PhotocatalyticozonationofceftriaxonesodiumbyCu2O/TiO2undervisiblelightGuanhuaMENG1,2*,LinsenZHANG1,BaoheLIU1,2,YuWANG1,ZhenghuiLI1,WenLI1,YongbinJIANG1,21.SchoolofEnergyandEnvironment,AnhuiUniversityofTechnology,Ma'anshan,Anhui243002,China2.MinistryofEducationBiofilmProcessWaterPurificationandUtilizationTechnologyEngineeringResearchCenter,Ma'anshan,Anhui243032,ChinaAbstract:Antibioticsarecommonlyuseddrugsforthetreatmentofvariousinfectiousdiseasesinhumansandanimals,buttheresidualantibioticsreleasedintotheaquaticenvironmentwillthreatentheecologicalsystem.Therefore,itisimportanttoexploreefficientmethodstoremoveantibioticsfromthewaterenvironment.Photocatalyticozonationtechnologyhasreceivedextensiveattentionforitseffectivedegradationandmineralizationofpersistentorganicpollutantsfromthewatermatrix.Inthiswork,Cu2O/TiO2compositewaspreparedbytheimpregnation-chemicalreductionmethodandwasusedasacatalystforphotocatalyticozonationofceftriaxonesodium(CRO)undervisiblelightirradiation.Themorphology,structure,andopticalpropertieswereinvestigatedbyX-raydiffraction(XRD),Fouriertransformsinfraredspectroscopy(FT-IR),scanningelectronmicroscope(SEM),transmissionelectronmicroscopy(TEM),nitrogenadsorption-desorptionisotherms(BET)andultraviolet-visiblediffusereflection(UV-VisDRS).TheeffectsofCu2O/TiO2ratio,Cu2O/TiO2dosage,ozoneconcentration,initialconcentrationofceftriaxonesodium,andinitialpHvalueofthesolutiononvisible-light-inducedphotocatalyticozonationofceftriaxonesodiumwerecomprehensivelyinvestigated.TheresultsshowedthatthedopingofCu2OonTiO2increasedthespecificsurfaceareaandporevolume,reducedtheenergygap,andimprovedthecatalyticperformanceundervisiblelight.Thephotocatalyticozonationprocesshadachievedamuchhigherremovalrateofceftriaxonesodiumfromanaqueoussolutionthanthephotocatalysisandozonationprocesses.WhenthemolarratioofCu2O:TiO2was0.2:1,thevisiblelightirradiationtimewas120min,theinitialpHvalueofthe...
