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纳米洋葱状富勒烯的研究现状及前景(英文).docx

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纳米洋葱状富勒烯的研究现状及前景(英文) ResearchStatusandProspectofNanoOnion-shapedFullerene Asatypeofspecialcarbonmaterial,fullerenehasattractedmuchattentionsinceitwasdiscoveredin1985.Afterdecadesofdevelopment,ithasbecomeanimportantresearchfieldinthefieldofmaterialsscienceandnanotechnology.Amongthem,nanoonion-shapedfullerene,alsoknownascarbonnano-onions(CNOs),havealsoemergedasanewtypeoffullerene.Inthispaper,wewilldiscusstheresearchstatusandprospectofthisnewmaterial. Nanoonion-shapedfullereneisakindofsphericalcarbonnanoparticleswithadiameterof2-6nm,whichiscomposedofmultipleconcentricgrapheneshells.ThemorphologyofCNOsissimilartoanonion,hencethename.Theuniquestructureandexcellentphysicalandchemicalpropertiesmakeitapromisingmaterialformanyapplications,suchasenergystorage,catalysis,biosensors,drugdelivery,andsoon.Unlikeotherfullerenes,CNOshavemanydistinctadvantagesthatmakethemanattractiveresearcharea. Firstly,CNOshaveoutstandingstabilityandhighchemicalinertness.Themultiplegrapheneshellscanactasaperfectbarriertoisolatethemfromexternalenvironmentalfactors.Therefore,CNOscanmaintaintheiroriginalstructureandexcellentpropertiesundervariousharshconditions,suchashightemperature,highpressure,corrosive,andoxidativeenvironments. Secondly,CNOshaveuniqueoptical,electrical,andmagneticproperties.Duetotheirsmallsizeandmultishellstructure,theyhaveahighsurface-to-volumeratio,whichcanenhancetheinteractionbetweenCNOsandexternalstimuli.Forexample,theultraviolet-visible-near-infrared(UV-Vis-NIR)spectraofCNOsshowhighabsorptioninthevisiblerange,whichcanbeutilizedforphotodynamictherapy. Thirdly,CNOshaveexcellentbiocompatibilityandlowtoxicity.Asapromisingnanomaterialforbiomedicalapplications,itiscrucialtoevaluateitstoxicityandbiocompatibility.TheresultsofseveralstudieshaveshownthatCNOshavenosignificantcytotoxicityandcanbeusedasadrugdeliverycarrier. Currently,theresearchonCNOsisstillinitsinfancy,buttherearealreadymanyexcitingresearchresults.Oneofthemostpromisingapplicationsisenergystorage.CNOshavemanyactivesitesont