碳量子点(CQDs)的合成.pptVIP

TheSynthesisof

CarbonQuantumDots(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

Content1、Introduction2、Syntheticapproaches2.1Arcdischargemethod2.2Chemicalablation2.3Electrochemicalcarbonization2.4Laserablation2.5Microwaveirradiation2.6Hydrothermal/solvothermal2.7Template3、Futuretarget

1.IntroductionCarbonquantumdots(CQDs)areanewclassofquantumdotsmaterialsAdvantage:1)Lowtoxicity,2)Biocompatibility,3)Lowcost,4)Chemicalinertness,5)Fluorescenceproperties.……Ref.1YoufuWang,AiguoHu.J.Mater.Chem.C,2014,2,6921–69392ShiYingLim,WeiShenandZhiqiangGao,Chem.Soc.Rew.,2015,362-281InorganicquantumdotsCarbonquantumdots

Greatpotentialapplications

2.SyntheticmethodsManymethodshavebeenproposedtoprepareCQDsduringthelastdecade,whichcanberoughlyclassifiedinto“Top-down”and“Bottom-up”approaches.Ref.YoufuWang,AiguoHu.J.Mater.Chem.C,2014,2,6921–6939

ArcdischargesootintroducecarboxylfunctionalgroupssuspensionCQDsRef.XuXY，RayR，GuYL，etal．JAmChemSoc，2004，126(40):12736-12737.oxidativegelelectrophoresismethodextractionArcprocessing2.1Arcdischargemethod

carbonaceousmaterialscarbonsource2.2ChemicalablationH2SO4HNO3Ref.1L.Shen,L.Zhang,M.Chen,X.ChenandJ.Wang,Carbon,2013,55,343.2H.PengandJ.Travas-Sejdic,Chem.Mater.,2009,21,5563

ElectrochemicalcarbonizationCQDssolutionadegassedacetonitrilesolutionwithTBAPCycledappliedpotentialPurificationprocessevaporatingtheacetonitrilefromsolutiondissolvingtheremainingsolidinwaterdialyzingtheaqueoussolutionwithacelluloseestermembranebagThreeelectrodes2.3ElectrochemicalRef:[1]ZhengL,ChiY,DongY,etal.JAmChemSoc,2009,131(13):4564-4565..[2]WangYF,HuAJ.J.Mater.Chem.C,2014,2,6921CQDs

Experimentalconfiguration

2.4LaserablationgraphitepowdercementcarbontargetCarbonprecursorLa