碳量子点(CQDs)的合成.ppt

TheSynthesisofCarbonQuantumDots(CQDs),speaker：叶江林,组员：汪冬冬叶江林王长来章小同杜娟高峰魏绍娟郭亚丽潘世友刘克潘祺,材料合成化学2015-1-5,1、Introduction,2、Syntheticapproaches,2.1Arcdischargemethod2.2Chemicalablation2.3Electrochemicalcarbonization2.4Laserablation2.5Microwaveirradiation2.6Hydrothermal/solvothermal2.7Template,Content,3、Futuretarget,1.Introduction,Carbonquantumdots(CQDs)areanewclassofquantumdotsmaterials,Advantage:1)Lowtoxicity,2)Biocompatibility,3)Lowcost,4)Chemicalinertness,5)Fluorescenceproperties.,Ref.1YoufuWang,AiguoHu.J.Mater.Chem.C,2014,2,692169392ShiYingLim,WeiShenandZhiqiangGao,Chem.Soc.Rew.,2015,362-281,Inorganicquantumdots,Carbonquantumdots,Greatpotentialapplications,2.Syntheticmethods,ManymethodshavebeenproposedtoprepareCQDsduringthelastdecade,whichcanberoughlyclassifiedinto“Top-down”and“Bottom-up”approaches.,Ref.YoufuWang,AiguoHu.J.Mater.Chem.C,2014,2,69216939,Ref.XuXY，RayR，GuYL，etalJAmChemSoc，2004，126(40):12736-12737.,oxidative,gelelectrophoresismethod,extraction,Arcprocessing,2.1Arcdischargemethod,carbonaceousmaterials,carbonsource,2.2Chemicalablation,H2SO4,HNO3,Ref.1L.Shen,L.Zhang,M.Chen,X.ChenandJ.Wang,Carbon,2013,55,343.2H.PengandJ.Travas-Sejdic,Chem.Mater.,2009,21,5563,Electrochemicalcarbonization,CQDs,Experimentalconfiguration,Laser,Acidtreated,Ref.SunYP.etal.JAmChemSoc.2006,128(24):7756-7757.,2.4Laserablation,2.5Microwaveirradiation,color:transparent(l)brown(l)dark-brown(s),(indicatingtheformationofC-dots),transferredtovacuumovenandheated,adddistilledwatertoformaqueoussolution,purifiedinacentrifuge,Ref.ZhuH,WangX,LiY,etal.Chem.Commun.,2009(34):5118-5120.,2.6Hydrothermal/Solveothermal,Ref.S.Sahu,B.Behera,T.K.MaitiandS.Mohapatra,Chem.Commun.,2012,48,8835.,saccharose,citricacid,Ref.ZhuS,MengQ,WangL,etal.AngewandteChemie,2013,125(14):4045-4049.,fluorescencequench,2.7Template,Chooseasuitabletemplate,synthesisCQDs,Acidetchingtemplate,CQDs,Ref.RuiliLiuet.alAngew.Chem.Int.Ed.2009(48):45984601,TEMimagesofCQDs: