国际会议口头报告ppt演讲内容准备模板.doc
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TheDraftofAcademicPresentation
国际会议的口头报告模板,每页ppt你需要讲什么东西需要分页详细写,尽量口语化,如下是本人参加比利时会议的模板,供大家参考。
P1
开场白:
Iamsohonoredtobewithyoutocommunicateacademicquestionsandideas.
Thetileofmyacademicpresentationis“Thepreparationandcatalyticperformanceofporoussilicananotubefunctionedwithheteroatoms”
Ishallonlytaketenminutesofyourtime.
Iwilltalkaboutthetopiconthepreparationofporousmaterials.
P2
Firstofall,iwannaintroducemyself.Icomefromnanjinguniversityoftechnology,nanjingcity,china.
P3
Thecontentislistedasfollows.
P4
Allourresearchesareconductedbytheacademicthoughts.Generallyspeaking,wearecommittedtoporousmaterials.Inordertoexplorehigh-performancefunctionalizedmaterialsforPilot experimentsandscale-up production;wetunethestructure,suchascompositionandmorphologystepbystepandoptimizethemfurther.What’smore,thepossiblesynthesismechanismsarealsoinvestigated.Today,thepresentationisbasedontheright-handbranch.
P5
Itisknownthatmesoporoussilicahaveexcellentcharactersasthecatalystcarrier,suchas……..
Butduetolackofactivesites,wehavetointroduceorganicorinorganicspeciesasactivesites.Andthecatalyticperformanceneedtobefurtherimproved.
P6
Asweknow,thethreefactorsincludingactivity,scaleanddiffusionfactorplaydecisiveroleinthecatalysis,affectingtheyield,selectivity,stabilitystrongly.Inourpresentation,wemainlyfocusontheinfluenceofscalefactoronthecatalysis.
P7
Duetolackofactivesitesformesoporoussilica,twomainmethods(surfaceloading,modifiedframework)arewidelyreported,bywhichvariousorganicorinorganicactivesitescanbeimmobilizedonthesurfaceorincorporatedintotheframeworkofmesopooussilica.
P8
Thoughvariousmorphologiesofmesoporossilicawerewidelysynthesized,thesynthesisofthemesoporossilica,withthreesimultaneouscharacteristicsincludingdopedmetal,mesoporousstructureandspecificmorphology,isalwaysachallenge,whichisrarelyreported.
Inotherwords,forourcaseexploringapropercondition,atwhichthesiliconandmetalsourcescansimultaneouslyhydrolyze,canensureadesiredmaterial.
P9
Next,let’slookatthesyntheticsteps.Firstly,….Then,….Afterthat,….Atlast,weobtainedtheproducts.
P10
Inthiswork,bychangingthesynthesisconditions,suchas…,andsoon,thepuremesoporoussilicawithdifferentmorphologiesweresynthesized,includingnanosphere,nanorod,helix,capsuleandnanotube.Wewillfocusonthepreparationandcatalyticapplicationofmesoporoussilicawithnanotubemorphology.
P11
theSEMimagesofsamples:
A1,A2,A3areshowninthefigure.Itcanbeseenthatsamplea1isnanowire-likewithlengthofabout2μmanddiameterofabout100nm.Whentheamountof...is0.04g,themorphologyofsampleA2becametobeshortandthickrodsandthesizeisabout1μminlengthand400nmindiameter,respectively.Withfurtherincreasingtheamountof...,thesampleA3andA4turnedtobesphericalmorphology.ItalsocanbeseenthatthediametersofsamplesA3andA4aresubstantiallythesameabout450nm.However,thesphericalmorphologyofA4ismoreregularthanthatofA3.
TheXRDpatternsshowedfourreflectionpeaksattributedto(100),(110),(200)and(210),respectively,duetothehexagonalsructure.
P12
Then,wekeepthesameamountof...,increasingtheamountof....
Wefoundthatthelengthincreasedgradually.TheXRDpatternsalsoshowedthehexagonalsructureofsamplesB1,B2,B3,B4.
P13
Moreover,anadditionalproofofthehexagonalsymmetrystructureisgivenbyTEMandtheFTpattern.TheN2adsorption-desorptionisothermsofthesamplesB1,B2,B3,B4exhibitatypicaltype-IVisotherm.
Accordingtothetableofstructuralparameters,wecanfindthatthespecificsurfaceareaandtotalporevolumeincreasegradually,thethicknessofwalldecreaseandthereisnoobviouschangeindiameter.
P14
Furthermore,thepossiblesynthesismechanismofthemesoporoussilicananotubeindualtemplatessystemwasproposed.Wesuggestthatduetoelectrostaticrepulsionbetweenpositivelychargedammoniumionsfromhydratedammoniamoleculesandhydrophilicgroupsof...,especiallyinammonia(NH3,25wt.%)solution,thehighconcentratedammoniumionsprovideacrowdedandrepulsivespacetopreventtheconjunctionof...molecules,leadingtotheformationoftherod-likemicellesastemplatetoformporestructureinsteadofsphere-likeones.Theroleofco-template...issuggestedtotunethelengthofrod-likemicellesbyarrangingitselfalongtheaxisofchannelwithPEOandPPOpartimmersedinthehydrophilicandthehydrophobicgroupofCTA+respectively.Asaresult,themesoporousnanotubewithdifferentlengthwillbesynthesized.However,thenon-polar...micellesarenotaffectedbypositivelychargedammonium.Whentheamountofco-templateincreasedfurther,thenon-polar...micellestendtocontrolthemorphologyofmicelleswhicharesequentiallyfromnanotube,shortrodtosphere-likeones.Itmybethereasonthatthenon-polar...micelleswouldprovidestrongerattractiveforcethantheelectrostaticrepulsionderivedfromthePEOblock,ammoniumionsandheadgroupof...,respectively.
P15
Inordertoinvestigatetheinfluenceofthemorphologyandstructureofmesoporoussilicaoncatalyticperformance,thesampleswithcopperincorporatedweresynthesized.
P16
ThefigureshowstheSEMandTEMimagesofsamplesa1,a2,a3,fromwhichwecanseetheyrepresentincrementallengthintherangeofabout0.5,1.0and1.5μm,andinsignificantchangeindiameteraround100nm.InXRDpatterns,therearealsofourreflectionpeaksforthesampleswithcopperincorprated,respectively,whichindicatestheincorporationoftheinorganiccoppersalthasnoobviouseffectonthehexagonalsructureandtheordereddegreeofporestructure.Moreover,thetrendsinlengthandthediameterofnanotubeareillustrated.
P17
TheN2adsorption-desorptionisothermsofthesamplesa1,a2,a3exhibitatypicaltype-IVisothermaccordingtotheIUPACclassificationandnohysteresisloopattherelativepressurerangeof0.2≤p/p0≤0.4,implyingthesamplesnotonlyhaveorderedmesoporousstructurebutalsotheuniformporesize.Moreover,theporediametersdidnotchangesignificantlyatdifferentweightratioof.../....Themostprobableporesizesofsamplesa1,a2,a3aredeterminedtobe2.71,2.50,2.44nm,respectively.Thestructuralparametersarelistedinfollowingtable.
P18
Thistablesummarizedthecatalyticactivityofcopper-modifiedporoussilicananotubeinthedirecthydroxylationofbenzenewithH2O2asoxidant.Thecatalystsshowedhighcatalyticactivity,anddirectproportionalrelationshipbetweenthebenzeneconversionandthelengthofthesilicananotube.ConsideringthesimilarcoppercontentdeterminedbyICP,thevariationsofcatalyticactivitieswereprobablycausedbydifferentretentiontimeofreagentinthenanotubewithdifferentlengths.
P19
ItisSummaryandFutureResearch
Thispartofresearchcanbesummedupfromthefollowingthreeaspects.
Mophologycontrol,CatalyticactivityandFutureresearch
看thisslide.
P20
thanks