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化学工程方面有关论文范文数据库,与中国学术期刊全文数据库,学术期刊购买全文相关论文摘要怎么写

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ubstrates.Priortothefilmdeposition,adiscontinuouslayerofAgnano-dotswasdepositedonthesubstrates.TheY123filmsgrownonsuchsurfacesmodifiedwithAgnano-dotswerecharacterizedbyAtomicForceMicroscopy(AFM),X-raydiffraction(XRD),scanningelectronmicroscopy(SEM),ACsusceptibilityandDCmagization.TheeffectsofthedensityofAgnano-dots,whichwascontrolledbythenumbersofPLDshots,onthemicrostructuresandresultantcriticalcurrentdensityJ<,sub>,c<,/sub>,havebeenstudiedsystematically.ResultsshowedthatatfixedphysicaldepositionconditionsJ<,sub>,c<,/sub>,increasedmonotonicallywithnumberofAgshots,n,forfilmsgrownonbothSTOandLAOsubstrates.At77K,theJ<,sub>,c<,/sub>,increasedfrom10<,sup>,6<,/sup>,to3.2×10°A/cm2forLAOandfrom8×10<,sup>,5<,/sup>,to3.5×10<,sup>,6<,/sup>,A/cm2forSTOasnincreasedfrom0to150.At5K,theenhancementofJ<,sub>,c<,/sub>,wasapproximatelyfourtimesatbothlowandhighfields.However,forfilmsgrownonYSZsubstrate,J<,sub>,c<,/sub>,increasedfrom2×10<,sup>,5<,/sup>,to2×10<,sup>,6<,/sup>,A/cm2asAgshotsincreasedfrom0to30,anddecreasedto9×10<,sup>,5<,/sup>,forn≥60.DetailedmicrostructureinvestigationsindicatedthatthecrystallinityandabalignmentgraduallyimprovedasthenumberofAg-nano-dotsincreased.

Source:IEEETransactionsonAppliedSuperconductivity,Jun2005Part3of3,Vol.15Issue2

Measuringmercuryionconcentrationwithacarbonnanotubepasteelect

化学工程方面有关论文范文数据库rodeusingthecyclicvoltammetrymethod.

Keywords:carbonnanotube,mercuryion,pasteelectrode,voltammetry

Source:Asimplypreparedcarbonnanotubepasteelectrode(CNTPE)wasutilizedformonitoringmercuryionconcentrationusingthecyclicvoltammetry(CV)methodandthesquarewaveanodicstrippingvoltammetric(SWASV)method.TheCNTPEwasparedwithvariousconventionalelectrodes.TheCNTPEmethodwasappliedtodeterminetheconcentrationoftracelevelsofHg(II)inseveralwatersamples,whichyieldedarelativeerrorof0.6%withaconcentrationof0.20mgL<,sup>,-1<,/sup>,Hg(II).Itwasdepositedat-0.5V(vsAg/AgCl),whichwassubsequentlyreducedto+0.20VtostripitontheCNTPE.Theoptimalexperimentalconditionsfortheanalysiswerefoundtobeasfollows:pHvalueof4forthemedium,depositionpotentialof-0.5V,depositiontimeof210s,SWfrequencyof40Hz,SWamplitudeof100mV,andsteppotentialof25mV.Giventheseoptimumconditions,alinearrangewasobservedwithintheconcentrationsof1.0-25.0μgL<,sup>,-1<,/sup>,and40.0-200.0μgL<,sup>,-1<,/sup>,.Thedetectionlimitwasfoundtobe0.42μgL<,sup>,-1<,/sup>,.

Source:JournalofAppliedElectrochemistry,Jun2005,Vol.35Issue6

Synthesisandphotocatalyticpropertiesofnanobi-crystallinetitaniaofanataseandbrookitebyhydrolyzingTiOCl<,sub>,2<,/sub>,aqueoussolutionatlowtemperatures.

Keywords:NANOANATASE,BROOKITETITANIA,X-RAYDIFFRACTION,brookitetitania,X-raydiffraction.,Nanoanatase

Abstract:Well-dispersednano-anataseorbi-crystalline(anatase+brookite)titaniapowderswithaaveragecrystalsizebelow10nmhavebeenpreparedfromaqueousTiOCl<,sub>,2<,/sub>,solutionbyadjustingpHvaluesofstartingsolutionandaddingdifferentadditivesatlowtemperatures.Amorphous–anatasetransformationoftitaniacouldproceedinaliquid–solidreactionatlowtemperatures,evenaroundroomtemperature,bycatalyticsupportofH<,sup>,+<,/sup>,ion.ThepresenceofasmallamountofSO<,sup>,2-<,/sup>,<,sub>,4<,/sub>,ionisalsounfavorabletotheformationofbothrutileandbrookite.Bycarefullyadjustingpreparationconditions,nanopureanatasewithhighersurfacearea,goodcrystallinityandaverygoodphotocatalyticactivityforgas-phaseoxidationofbenzenewasobtained.

Source:ResearchonChemicalIntermediates,2005,Vol.31Issue4,

Comparisonofnano-indentationhardnesstomicrohardness.

Keywords:Nano-indentationhardness,Materialmechanicalproperty,Hardness,Indentation

Abstract:Withanano-indenterandamicrohardnesstestingmachine,nano-indentationhardnessandmicrohardnessaremeasuredinawideloadrange(0.1–19600mN)forfivematerials.Evenfusedsilicaandsiliconalmosthaveconstanthardnessduringtheloadrange,thenano-indentationhardnessofcopper,stainlesssteelandnickeltitaniumalloyshowsobviousindentationsizeeffect,namelythatthehardnessdecreaseswiththeincreaseofdepth.Forthemeasuredmaterials,thenano-indentationhardnessisabout10–30%inmagnitudelargerthanthemicrohardness.Themainreasonscanbeexplainedastheanalysisofthenano-indentationhardnessusingtheprojectedcontactareaatpeakloadA<,sub>,c<,/sub>,insteadoftheresidualprojectedareaA<,sub>,r<,/sub>,,aswellasthepurelyelasticcontactassumptiondescribingtheelastic/plasticindentationprocess.TheanalysisbasedonasimplemodelindicatesthatA<,sub>,c&

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化学工程方面有关论文范文数据库,与中国学术期刊全文数据库,学术期刊购买全文相关论文摘要怎么写参考文献资料：