孔状Co3O4纳米片和纳米棒的选择性合成和表征.pdf

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1、第26卷第8期无机化学学报Vo1．26No．82010年8月CHINESEJOURNALOFINORGANICCHEMISTRY1394—1398孔状Co304纳米片和纳米棒的选择性合成和表征黄庆利陈虎2张永才卫(扬州大学测试中心，扬州225009)(扬州大学化学化工学院，扬州225002)摘要：利用两步实验选择性合成孔状Co0纳米片和纳米棒：首先，以Co(NOs)·6HzO，NaOH和不同量的NH．F为原料在120oC水热6h的条件下合成了Co(OH)：．CoO纳米片(S1)和Co(OH)F．Co3O纳米棒(S2)；然后将所得纳米片和纳米棒在400

2、℃时加热2h即得到多孔的Co30纳米片和纳米棒。所得产物用X射线衍射(XRD)、场发射扫描电子显微镜(FE—SEM)和透射电子显微镜(TIM)进行了表征。此外电化学测试表明Co0纳米棒的电容量比Co0纳米片的更大。关键词：半导体；纳米材料；电化学性质中图分类号：0614．81'2文献标识码：A文章编号：1001-4861(2010)08—1394—05SelectiveSynthesisandCharacterizationofPorousCosO4NanoplatesandNanorodsHUANGQing—LiCHENHuZHANGYong-Ca

3、i(’TestingCenter,YangzhouUniversity,Yangzhou,Jian~u225009)(CollegeofChemistryandChemicalEngineerin~YangzhouUniversity,Yangzhou,Jiangsu225002)Abstract：Atwo—stepmethodhasbeenproposedfortheselectivesynthesisofporousCo304nanoplatesandnanorods：firstly，Co(OH)2一Co3O4nanoplates(SI)andC

4、o(OH)F—Co3O4nanorods(S2)weresynthesizedviathehydrothermalreactionofCo(N03)2·6H20，NaOHanddifferentamountsofNH4Fat120oCfor6h；secondly，porousCo3O4nanoplatesandnanorodswereobtainedbythermaldecompositionoftheS1andS2precursorsinairat400℃for2h，respectively．Theobtainedproductswerechara

5、cterizedbyX—raydiffraction，fieldemissionscanningelectronmicroscopy，andtransmissionelectronmicroscopy．Besides，theelectrochemicaltestsshowedthattheas-preparedCo304nanorodshavelargerspecificcapacitancesthantheas—preparedCo3O4nanoplates．Keywords：semiconductors；nanomaterials；electri

6、calpropertiesCo304isanimportanttransitionmetaloxideduetosynthesismethodsandsynthesisconditionst．Conse。itsapplicationsascatalyst，gassensor，magneticquently，specialattentionhasbeenpaidtothesynthesismaterial，electrodeforlithium-ionbatteries，electro-0fCo3O4nanomaterialswithdifferent

7、characteristics，chromicandelectrochemicalsubassemblies．etc．．_1-5]．Itaimingatexploitingtheirpotentials．hasbeenreportedthatthepropertiesandpracticalByfar，variousCo304nanostructuresincludingperformancesofCo3O4arerelatedtotheirphase，nanorods[．nanoplates131,nanocubest~l,hollowsphere

8、sI5】morphology，size，etc．，whichinturndependontheirandSO