氨基化碳纳米管

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1、CARBON49(2011)126–132availableatwww.sciencedirect.comjournalhomepage:www.elsevier.com/locate/carbonFabricationofsilicananoparticlesonthesurfaceoffunctionalizedmulti-walledcarbonnanotubesHongfuZhou,ChenZhang,HangquanLi,ZhongjieDu*TheKeyLaboratoryofCarbonFiberandFunctional

2、Polymers,MinistryofEducation,BeijingUniversityofChemicalTechnology,Beijing100029,PRChinaARTICLEINFOABSTRACTArticlehistory:Amethodforthepreparationofahybridmaterialconsistingofvarioussizesilicananopar-Received26May2010ticlesattachedtomulti-walledcarbonnanotubes(MWCNTs)isp

3、roposed.Poly(acrylicacid)Accepted30August2010oligomerwasfirstreactedwithhydroxylgroupsonacid-treatedMWCNTsleadingtoaAvailableonline7September2010graftedencapsulationoftheMWCNTs.Theseweresubsequentlyreactedwith3-aminopro-pyltriethoxysilane(APTES)resultingsub-graftingofAPTE

4、SontheMWCNTs.SuchMWCNTs(siloxane-MWCNTs)werefurtherhydrolyzedtomakeMWCNTsindirectlybearingSi–OHgroups.Finally,abud-likeMWCNT/silicahybridwasobtainedbyforminganumberofsilicananoparticlesfromSi–OHgroupsonthesurfaceofMWCNTsbyintroducingsiloxane-MWCNTsintoasolutionoftetraeth

5、ylorthosilicate,ammonia,andethanol.TheaveragesizeofthesilicananoparticlesonthesurfaceoftheMWCNTscouldbecontrolledbyadjust-ingtheconcentrationofammoniaandthereactiontime.CrownCopyrightÓ2010PublishedbyElsevierLtd.Allrightsreserved.1.IntroductionCNT-silicananoparticlehybrid

6、.SainsburyandFitzmaurice[7]fabricatedMWCNT/silicahybridbytemplateassemblyofCarbonnanotubes(CNTs)areconsideredapromisingmate-thesilicananoparticlesonthesurfaceofAPTESfunctional-rialforassemblingnanodevicesbecauseoftheiruniqueprop-izedMWCNTs.Linetal.[8]synthesizedamagnetic

7、ironoxideerties,includingphysicalstrength,chemicalstability,andsilicaandsingle-walledCNThybridbyreactionsbetweenelectronicconductivity,whichmakethempossiblesubsti-acid-treatedsingle-walledCNTswithtetrachlorosilaneandtutesformanyclassicalmaterialsinthenearfuture[1].Re-mag

8、neticironoxidesilicananoparticles.Allthesemethodscently,hybridmaterialsbasedonCNTsandsilicaexploitedthe