简单的溶剂热法制备分层的碲化铋微米结构.pdf

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1、第28卷第10期无机化学学报Vol_28No．102012年10月CHINESEJOURNALOFINORGANICCHEMISTRY2241—2247简单的溶剂热法制备分层的碲化铋微米结构谭乃迪张延林2陈峰3陈哲，1(吉林化工学院，吉林132022)(东北电力大学，吉林132012)(3吉林石化公司有机合成厂，吉林132021)摘要：采用简单的溶剂热法制备出高纯度的由纳米片自组装而形成的碲化铋微米结构。在碲化铋的形成中．乙二醇不仅作为溶剂，而且还作为还原剂。研究发现，聚乙烯吡咯烷酮(PVP)和硝酸在碲化铋的形成中

2、起到了很重要的作用。通过x一射线衍射(XRD)、X一射线光电子能谱(XPS)、扫描电镜(SEM)、透射电镜frEM)、高分辨透射~ESJ~(HRTEM)、选区电子衍射(SAED)对其进行表征及研究。最后，利用时间演化实验对碲化铋的形成机理进行了探讨。关键词：碲化铋；分层微米结构；聚乙烯吡咯烷酮；硝酸中图分类号：0612．5文献标识码：A文章编号：1001—4861(2012)10．2241—07One-StepSolvothermalSynthesisofHierarchicalBi2Te3Microstructu

3、resTANNai—DiZHANGYan—LinCHENFeng3CHENZhe，(JilinInstituteofChemicalTechnology,Jilin,Jilin132022,China)(2DepartmentofChemicalEngineering,NortheastDianliUniversity,in,Jilin132012,China)(3jinlinPetrochemicalCompanyOrganicSyntheticPlants，Jinlin,fllin132021，China)Ab

4、stract：High—qualityhierarchicalmicrostructuresofBi2Te3self-assembledbynanoplateswerepreparedviaasimplewetchemicalmethodundersolvothermalconditions．Ethyleneglycolwasusednotonlyasasolvent，butalsoasareducingagent．Thepoly(vinylpyrrolidone)(PVP)andnitricacidplayeda

5、nimportantroleintheconstructionofthehierarchicallyserf-assembledmicrostructures．TheproductswerecharacterizedbyX·raydiffraction(XRD)，X—rayphotoelectronspectra(XPS)，scanningelectronmicroscopy(SEM)，transmissionelectronmicroscopy(TEM)，high-resolutiontransmissionel

6、ectronmicroscopy(HRTEM)，andselectedareaelectrondiffraction(SAED)．Aformationmechanismwasalsoproposedbasedontheresultoftime—dependentmicrostructures．Keywords：Bi~Te3；hierarchicalmicrostmctures；poly(vinylpyrrolidone)(PVP)；nitricacidInthepastfewdecades，synthesisofm

7、icro—andanintensiveandhotresearchtopicbecauseoftheirnano—scaleinorganicmaterialshaveattractedeffortstouniquephysicalandchemicalpropertiesandpotentialdevelopthematerialsbecauseoftheiroutstandingapplicationsinoptics，electronics，medicine，ceramics，propertiesandpot

8、entialapplicationscorrelatedwiththecatalysis，andenergy／chemicalconversions，andtheirmorphologyofthenanomaterials【⋯．Specifically．importantrolesinthesystematicresearchofstructure—hier