金屬氧化物納米晶的制備、性質(zhì)及應(yīng)用研究.pdf

1、南京理工大學(xué)博士學(xué)位論文金屬氧化物納米晶的制備、性質(zhì)及應(yīng)用研究姓名：熊綱申請(qǐng)學(xué)位級(jí)別：博士專(zhuān)業(yè)：材料學(xué)指導(dǎo)教師：汪信陸路德19980701Il摘要1998年”，jjAbstract7Fhepreparation，physicochemicalpropertiesandapplicationsofnanocrystallinemetaloxidewereinvestigatedinthedissertationTheresearchwer

2、ecarriedoutwiththesepurpose：togettheproductsofnewkindswithgreatquantity，controllablesizeandclearsurface；ThestructureandspectrapropertiesoftheproductswerestudiedandcomparedwimthebulkmaterialsItvcasexpectedthattheresearchw

3、ouldgetsomevaluableresultsfortheestablishingofthetheorysystemofnanomaterialsscienceThecontentsofthisdissertationareasfollows：1Nanocrystalsofhexagonalcrystalsystemfrrite，spinel—typefemte(MFe204，M=Fe2，Zn2，Co“，Ni2，M92，Mn2)，

4、spineltypechromate(MCr204，M=Zn2，M92，C02，Ba2，Mn2，Cu2，Ni2)，spineltypealuminate(MAl204，M=Mn2，C02，Cr2，Zn2，Ba2，sr2，M92)，perovsikite—typerareearthcompositemetaloxides(LaB03，B=Fe”，Co”)，Y203，La203，F(xiàn)e304，Ti02andTi02一A1203，whichsu

5、mmedupto40kinds，werepreparedbythestearicacidgelmethodthepolyethylenemethodandthesurfaetantcoprecil：Iitationmethod2Theconditionsandprocessingofpreparationweremonitoredbythethermo—gravimetricanalysisanddifferentialthermala

6、nalysis(T(卜D1A)Thestructure，particlesize，morphology，surfacecompositionandthespec仃apropertiesoftheproductswerecharacterizedbytheXraypowdersdiffractometer(XRD)，Transmissionelectronmicroscopy(TEM)，X—rayphotoelectronspectros

7、copy(XPS)，BETspecificsurfaceareaabsorptionmetor，RamanspectraandInffedspectra3Thesplittingandshiftingoftheinfraredabsorptionpeaksofthesamplesattributedtothesurfaceeffectofthenano—particleswerediscovered4Themagneticpropert

8、iesofhexagonalcrystalsystemferriteweremeasaredusingVibratingsamplemagnetometer(VSM)Thespecificsaturationmagnetization，coerciveforceandtherelativesaturationremanenceareinfluencedbyheattreatmenttemperatureandparticlesize5T