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氧化石墨烯石墨状氮化碳的制备及其光催化性能研究.docx

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氧化石墨烯石墨状氮化碳的制备及其光催化性能研究 Title:PreparationandPhotocatalyticPerformanceofGrapheneOxide-basedGraphite-likeNitrogen-DopedCarbon Abstract: Grapheneoxide-basedgraphite-likenitrogen-dopedcarbon(GO-GNC)isanovelandpromisingmaterialwithexcellentphotocatalyticproperties,whichhasattractedconsiderableattentioninrecentyears.ThispaperaimstoreviewthecurrentprogressinthepreparationandphotocatalyticperformanceofGO-GNC. Introduction: Inrecentyears,thedevelopmentofefficientandsustainableenergyconversionsystemshasbecomeaglobalconcern.Photocatalysis,aprocessthatutilizeslightenergytodrivechemicalreactions,hasemergedasapromisingtechnologyduetoitspotentialtoconvertsolarenergyintochemicalenergy.Grapheneoxide(GO)andnitrogen-dopedcarbonmaterialshaveshowngreatpotentialasphotocatalystsduetotheiruniquephysicochemicalproperties.Inthisstudy,wefocusonthesynthesisofGO-GNCandinvestigateitsphotocatalyticperformance. SynthesisofGO-GNC: ThefabricationofGO-GNCinvolvesseveralsteps,includingthepreparationofGOandthesubsequentthermaltreatmentfornitrogendopingandcarbonization.ThesynthesisofGOtypicallyinvolvestheoxidationofgraphiteusingstrongoxidantssuchaspotassiumpermanganateorsodiumnitrate.TheresultingGOsheetspossessoxygen-containingfunctionalgroups,includinghydroxyl,carboxyl,andepoxygroups,whichprovidehighreactivityanddispersibility.ThenitrogendopingandcarbonizationofGO-GNCaretypicallyachievedbyannealingtheGOprecursorinthepresenceofnitrogen-containinggases,suchasammoniaornitrogenatmosphere,athightemperatures.Thethermaltreatmentleadstotheremovalofoxygenfunctionalgroupsandthesimultaneousincorporationofnitrogenatoms,resultinginnitrogen-dopedcarbonmaterialswithagraphite-likestructure. PhotocatalyticPerformanceofGO-GNC: ThephotocatalyticperformanceofGO-GNCismainlyattributedtothesynergisticeffectsofgrapheneoxideandnitrogen-dopedcarbon.Theuniquestructuralfeaturesandthepresenceofoxygen-containingfunctionalgroupsinGOprovideahighsurfaceareaandabundantactivesitesforphotocatalyticreactions.Thenitrogen-dopedcarbon,ontheo