Sb-SnO2包覆硅藻土多孔导电材料制备及表征

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1、网络出版时间：2011-09-2215:11网络出版地址：http://www.cnki.net/kcms/detail/31.1363.TQ.20110922.1511.004.html第26卷第10期无机材料学报Vol.26No.102011年10月JournalofInorganicMaterialsOct.,2011文章编号:1000-324X(2011)10-1031-06DOI:10.3724/SP.J.1077.2011.01031Sb-SnO2包覆硅藻土多孔导电材料制备及表征11112杜玉成,颜晶,孟琪,李扬,戴洪兴(北京工业大学1.新型功能材料

2、教育部重点实验室;2.环境与能源学院化学化工系,北京100124)摘要:以硅藻土为基核采用共沉淀法,制备Sb-SnO2包覆前驱体,通过焙烧制备了多孔结构导电复合材料.Sb-SnO2包覆率影响产物导电性、焙烧温度影响Sb-SnO2晶胞参数和晶粒大小,进而影响产物导阻率.采用XRD、SEM、TEM、EDS、BET、FT-IR对样品进行了表征,采用四探针仪测试样品导电性能.当n(Sn)/n(Sb)=8/1、包覆率为25.8%、700℃焙烧样品电阻率最低为22Ω⋅cm,并具有介孔结构,孔径为6nm.关键词:硅藻土;多孔结构;Sb-SnO2包覆;导电性;电阻率中图分类号:

3、TB34文献标识码:AFabricationandCharacterizationofAntimony-dopedTinOxideCoatingDiatomiteConductiveMaterialwithMicroporousStructure11112DUYu-Cheng,YANJing,MENGQi,LIYang,DAIHong-Xing(1.KeyLabofAdvancedFunctionalMaterials,MinistryofEducationofChina,CollegeofMaterialsScienceandEngineering,Beiji

4、ngUniversityofTechnology,Beijing100124,China;2.DepartmentofChemistryandChemicalEngineering,CollegeofEnvironmentalandEnergyEngineering,BeijingUniversityofTechnology,Beijing100124,China)Abstract:PorousandconductivediatomitecompositematerialswerepreparedviathecalcinationoftheSb-SnO2-coa

5、teddiatomiteprecursorderivedfromtheco-precipitationroutewithdiatomiteasthesubstrate.Con-ductivityofthesampleswasinfluencedbytheSb-SnO2coatingratio.Calcinationtemperaturehadanimpactonthecrystallatticeparametersandgrainsizes,hencealteringtheconductivityandresistivityofthecompositemater

6、ials.ThesampleswerecharacterizedbymeansofX-raydiffraction(XRD),scanningelectronmicroscope(SEM),trans-missionelectronmicrocope(TEM),energy-dispersiveX-rayspectrometry(EDS),N2adsorption-desorptionmeas-urement(BET),andFouriertransforminfraredspectrometry(FT-IR).Theconductiveperformanceo

7、fthesampleswasdeterminedusingaFour-PointProbeMeterapparatus.Itisshownthatthemesoporous(porediameter=6nm)samplewithn(Sn)/n(Sb)=8/1andaSb-SnO2coatingratioof25.8wt%derivedfromcalcinationat700℃exhibitedthelowestresistivityof22Ω·cm.Keywords:diatomite;porousstructure;Sb-SnO2coating;conduct

8、ivity;resist