碳納米管一維填充材料的合成與性質研究.pdf

1、●本論文以超臨界流體為介質，并通過超臨界反應，制備了富勒烯填充的碳納米管材料和金屬填充的碳納米管材料。并利用透射電鏡、拉曼光譜、X射線光電子能譜對所合成的填充材料的性質進行表征和研究，獲得的主要結果如下：1、利用超臨界流體及超臨界反應成功的制備出富勒烯填充的碳納米管一維材料和金屬填充的碳納米管一維材料，而且填充率可以達到99％以上，解決了在碳納米管填充實驗中填充率較低的問題。2、首次將超臨界反應應用到碳納米管填充中，擴大了填充物質的選擇

2、范圍，克服了填充物質受到局限的缺點。3、通過拉曼光譜表征發(fā)現(xiàn)內(nèi)嵌在碳納米管中的富勒烯與碳納米管存在以范德華作用力為主的相互作用，其大小與富勒烯的大小和電子性質有著密切的關系。4、通過對富勒烯填充碳納米管和金屬填充碳納米管的拉曼光譜對比分析，可以看出它們具有相反的拉曼位移，說明碳納米管填充材料的客體和主體之間的相互作用力與填充材料的性質有密切的關系，因此選擇具有特殊性質的物質對碳納米管進行填充，可以改變碳納米管的性質，合成出具有優(yōu)異特性的

3、納米材料。關鍵詞：碳納米管，填充，超臨界流體，超臨界反應，一維材料◆ThepropertiesofthehybridproductsbasedOil1DmorphologycavityofnanotubesmayexhibitdifferentlyfromthepristinenanotubesandthemacroscopicstateoftheinsertedmaterialsSofarvariouskindsofmaterials

4、suchasfullerenes，organicmolecules，halides，oxides，metalseta1hadbeeninsertedintothenanocavityHoweverextensiveapplicationofthefilledSWNTsWaslimitedduetothesyntheticapproachestothenanotubcchannelsInthisworkwedevelopedanovel，

5、fastandefficientmethodtosynthesizeonedimensionalnanotube—basedmaterialsviasupercriticalreactionandsupercriticalfluidThepropertiesofasgeneratedmaterialswerecharacterizedbyTEM，RamanandXPS功emainresultsareasfollows1Different

6、kindsofmetals@i，CuA曲andfullerenes(C∞，C70，CTs，Cu，Gd@C82，Er@Cs2，Ho@Cs2，Y@cu)weresuccessfullyinsertedintothenanotubesbythetechnique、航mvarioussupercriticalfluidsandsupercriticalreactionThefillingrateswereprovedtobemorethan99

7、％2Forthefirsttime，weprovedthatorganicsupereriticalfluidsweregoodmediatosynthesizeSWNTsb∞edonedimensionalnanomaterials，notonlyassolventbutalsoasreactionagentThistechniquecanbeappliedtoconstructnewtypesofnanomaterialsifwec

8、hoosetheappropriatesupereriticalreactionandfluidintheCNTsThesupercriticaltechniquebyusingorganicsolventsextendedtherangeandapplicationsofencapsalatednanostructures3TheinteractionbetweenSWNTsandvariouskindsoffullerenes(C6

9、0，C70，C7s，Cs4)andmetallofullerenes(Gd@C82，Er@Cs2，Ho@C82，Y@C82)hasbeenfurtherinvestigatedTheslightblueshiftofGbandinRamanspectrawitllrespecttopristineSWNTsWasattributedtothechargetransferfromSWNTstofullerenescageTheobviou