退火处理对氧化锌纳米棒形貌及气敏性能的影响-论文.pdf

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1、Availableonlineatwww．sciencedirect．c0mTransaetionsof：ScienceDirectNonferrousMetalsSocietyofChinaPressTrans．NonferrousMet．Soc．China24(2014)736_742www．tnmsc．cnEffectofannealingtreatmentonmorphologiesandgassensingpropertiesofZnOnanorodsJian-jiaoZHANG~Er-junGUO，Li—pi

2、ng、vANG’Hong—yanYUE，Guo-jianCAO，LiangSONGCollegeofMaterialsScienceandEngineering，Ha~inUniversityofScienceandTechnology,Harbin150040，ChinaReceived3February2013；accepted5July2013Abstract：Thehigh．temperaturestabilizationofZnOnanorodssynthesizedbyhydrothermaltreatmen

3、twasinvestigated．ThestructureandmorphologiesofZnOnanorodswerecharacterizedbvXRDandSEM．respectively．ThethermalstabilityofZnOnanorodswasalsodetectedbvthermalgravityanalyzing．ThermalannealingtreatmentresultsindicatethatZnOnanorodsarefundamentallystablewhenannealingt

4、emperatureislowerthan600。C．Ⅵenannealingtemperatureisbeyond600。C，thediametersofZnOnanorodsobviouslydecreaseandtheaggravatingtendencyofnanorodsbetweeneachotheralsoincrease．AnnealingtreatmentcangreatlyinfluencethegassensingpropertiesofZnOnanorods．ComparingwithZnOnan

5、orodswithoutannealingtreatment．thegassensingpropertyofZn0nanorodstoH，withconcentrationof2．5×10canincreasefrom2．22to3．56．ZnOnanorodsannealedat400。CexhibitoptimumgassesingpropertytoH，gas．Keywords：ZnOnanorods；anealingtreatment：gassensingpropertyoxygenvacancyconcentr

6、ation，deepleveldefectsand1Intr0ducti0nsurfacedefectrecombination『15]．SeveralstudieshavebeenreportedabouttheNowadays，one-dimensiona1ZnOnanomaterialsannealingprocessofZn0nanorodsunderdifferenthavebecomeahotspotofresearchersduetotheirspecia1ambientatmospheresandthei

7、reriectsonZnOproperties．properties，suchasabsorptionofUVlight，resistancetoForinstance，ⅥNGeta1『161studiedtheeffectofradiation，luminescencecharacteristicsandpiezoelectricanealingtemperaturesonthemagneticpropertiesofproperties[1]．Amongtheirdiversemorphologies，ZnOas．s

8、ynthesizedZnhMnxOnanorods．Theresultindicatednanorodsholdanexcellentpotentialinlotsofthatthecoercivityandsaturationmagnetizationoptoelectronicfields，involvingUV