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基于硫醇类有机物降解的磁性碳纳米管复合光催化剂的制备及光催化性能和机理研究 Title:Preparation,PhotocatalyticPerformance,andMechanismStudyofMagneticCarbonNanotubeCompositePhotocatalystsfortheDegradationofThiolOrganicCompounds Abstract: Inrecentyears,thedegradationofthiolorganiccompoundshasbecomeasignificantenvironmentalconcernduetotheirhightoxicityandpersistence.Inthisstudy,anovelmagneticcarbonnanotubecompositephotocatalystwaspreparedanditsphotocatalyticperformanceandmechanismforthedegradationofthiolorganiccompoundswereinvestigated.Themagneticcarbonnanotubecompositephotocatalystwassynthesizedthroughasimplehydrothermalmethod,followedbythedepositionofmagneticnanoparticlesontocarbonnanotubes.Theas-preparedcompositephotocatalystexhibitedexcellentphotocatalyticactivity,stability,andreusabilityforthedegradationofthiolorganiccompounds.Themechanisminvolvedthegenerationofreactiveoxygenspeciesundervisiblelightirradiation,whichpromotedthedegradationofthiolorganiccompounds. 1.Introduction Thiolorganiccompounds,includingsulfur-containingorganicpollutants,arewidelyusedinvariousindustriessuchaspetroleum,chemical,andpharmaceuticalindustries.However,thesecompoundsarehighlytoxicandpersistent,posingagreatthreattotheenvironmentandhumanhealth.Therefore,thedevelopmentofefficientandsustainablemethodsfortheirdegradationisofgreatimportance. 2.MaterialsandMethods Carbonnanotubesweresynthesizedusingachemicalvapordepositionmethod,andmagneticnanoparticleswerepreparedviaacoprecipitationmethod.Theas-synthesizedmagneticcarbonnanotubecompositephotocatalystwascharacterizedusingscanningelectronmicroscopy,transmissionelectronmicroscopy,X-raydiffraction,andvibratingsamplemagnetometry.Thephotocatalyticperformanceofthecompositewasevaluatedbyexaminingthedegradationofthiolorganiccompoundsundervisiblelightirradiation. 3.ResultsandDiscussion Thecharacterizationresultsconfirmedthesuccessfulsynthesisofthemagneticcarbonnanotubecompositephotocatalyst,whichpossessedahighsurfacearea,goodmagneticproperties,anduniformdispersionofmagneticnanoparticles.The