Synthesis of nanoparticles in an atmospheric pressure glow discharge.pdf

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1、JournalofNanoparticleResearch(2006)8:511–517ÓSpringer2006DOI10.1007/s11051-005-9013-1Synthesisofnanoparticlesinanatmosphericpressureglowdischarge121,M.D.Barankin,Y.CreyghtonandA.Schmidt-Ott*1DelftUniversityofTechnology,TNW,ParticleTechnology,Julianalaan136,Delft,TheNetherlands;2TNO,PML

2、Laboratory,Delft,TheNetherlands;*Authorforcorrespondence(Tel.:+015-2783577;E-mail:A.Schmidt-Ott@TNW.TUDelft.nl)Received22November2004;acceptedinrevisedform20July2005Keywords:nanoparticleproduction,glowdischarge,atmosphericpressureplasma,non-equilibriumplasma,ironnanoparticlesAbstractNa

3、nopowdersareproducedinalowtemperature,non-equilibriumplasmajet(APPJ),whichproducesaglowdischargeatatmosphericpressure,forthefirsttime.AmorphouscarbonandironnanoparticleshavebeensynthesizedfromAcetyleneandFerrocene/H2,respectively.Highgenerationratesareachievedfromtheglowdischargeatnear-

4、ambienttemperature(40–80°C),andrisewithincreasingplasmapowerandprecursorconcentration.Fairlynarrowparticlesizedistributionsaremeasuredwithadifferentialmobilityanalyzer(DMA)andanaerosolelectrometer(AEM),andarecenteredaround30–35nmforcarbonand20–25nmforiron.Particlecharacteristicsanalyzed

5、byTEMandEDXrevealamorphouscarbonandironnanoparticles.TheFeparticlesarehighlyoxidizedonexposuretoair.Comparisonofthemobilityandmicrographdiametersrevealthattheparticlesarehardlyagglomeratedorunagglomerated.Thisisascribedtotheunipolarchargeonparticlesintheplasma.Thegeneratedparticledistr

6、ibutionsareexaminedasafunctionofprocessparameters.Introductionthinfilms(Sudaetal.,2002).Alargebodyofinformationexistsaboutarcplasmasandnano-Carbonnanoparticles,ofvariousforms,haveaparticleformation(mostlymetals);butthesepro-myriadofindustrialapplications.Carbonblack,cessesaregenerallyop

7、eratedatveryhighindispensabletotherubber,paint,andchemicaltemperaturesand/orlowpressuressuchastheindustries,isalsocommonlyusedininks(Pocsikhydrogen-plasma-metalreaction(HPMR)(Sakkaetal.,2002).Ironnanoparticleshavemanyuses,etal.,2002;Lietal.,2003;Shaoetal.,2003)fromenhancingcatalysisw