碳納米管一維填充材料的合成與性質(zhì)研究.pdf

1、●本論文以超臨界流體為介質(zhì)，并通過(guò)超臨界反應(yīng)，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(xiàn)光電子能譜對(duì)所合成的填充材料的性質(zhì)進(jìn)行表征和研究，獲得的主要結(jié)果如下：1、利用超臨界流體及超臨界反應(yīng)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(dá)到99％以上，解決了在碳納米管填充實(shí)驗(yàn)中填充率較低的問(wèn)題。2、首次將超臨界反應(yīng)應(yīng)用到碳納米管填充中，擴(kuò)大了填充物質(zhì)的選擇

2、范圍，克服了填充物質(zhì)受到局限的缺點(diǎn)。3、通過(guò)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(zhì)有著密切的關(guān)系。4、通過(guò)對(duì)富勒烯填充碳納米管和金屬填充碳納米管的拉曼光譜對(duì)比分析，可以看出它們具有相反的拉曼位移，說(shuō)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(zhì)有密切的關(guān)系，因此選擇具有特殊性質(zhì)的物質(zhì)對(duì)碳納米管進(jìn)行填充，可以改變碳納米管的性質(zhì)，合成出具有優(yōu)異特性的

3、納米材料。關(guān)鍵詞：碳納米管，填充，超臨界流體，超臨界反應(yīng)，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