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1、-130mgL的催化剂存在下10min内几乎完全催化还原4-硝基酚。这为工业上芳香族硝基化合物的溶液相还原提供了新的催化剂选择。关键词：微/纳米材料；水热法；性能研究AbstractSpinelmicro/nanomaterialshavestimulatedextensiveresearchinterest,duetotheirgreatpotentialapplicationsinmagneticrecording,photoelectricconversion,energyconversiona
2、ndstorage,sensorandcatalyst,etc.Atpresent,therearemanysynthesismethodstoobtainspinelmicro/nanomaterials,includinghydrothermal/solvothermalmethod,microwavemethod,sol-gelmethod,coprecipitationmethod,etc.Inthisdissertation,weaimedtoobtainspinelcobaltatemic
3、ro/nanomaterialsbyhydrothermalmethod,includingNiCo2O4,MnCo2O4andCuCo2O4.Simultaneously,thepotentialpropertyandapplicationinsupercapacitorsandcatalystoftheas-preparedproductswereexplored.Themaincontentsaresummarizedasfollows:1.Shape-controlledsynthesisof
4、porousNiCo2O4throughafacilehydrothermalmethodandsubsequentcalcinationprocesswasreported.EmployingCoSO4,NiSO4andureaasthestartingreactants,flower-likeNiCo2O4wereobtainedat100°Cfor5hwithouttheassistanceofanyadditiveandsubsequentcalcinationat300°Cfor2h;dum
5、bbell-likeNiCo2O4werepreparedat150°Cfor5hinthepresenceoftrisodiumcitrate(Na3C6H5O7)andsubsequentcalcinationat300°Cfor2h.Itwasfoundthatbothflower-likeanddumbbell-likeNiCo2O4couldbeusedaselectrodematerialsforsupercapacitors,andexhibitedexcellentelectroche
6、micalperformances,suchashighspecificcapacitance(553F-1-1-1gand890Fgat1Ag),goodratecapability(72.3%and78.7%-1capacityretentionevenat10Ag),andexcellentlong-termcyclestability(14.5%and6.4%lossafter5000cycles),indicatingthattheas-preparedproductsarepromisin
7、gelectrodematerialsforsupercapacitors.2.SphericalMnCo2O4superstructureshavebeensuccessfullysynthesizedviaasimplehydrothermalroutewithsequentialthermaltreatment,employingCoSO4,MnSO4andureaastheoriginalreactantswithouttheassistanceofanyadditive.Theas-prep
8、aredproductswerecharacterizedbyX-raypowderdiffraction(XRD),energydispersiveX-rayspectrometry(EDS),fieldemissionscanningelectronmicroscopy(FESEM),(highresolution)transmissionelectronmicroscopy(HRTEM/TEM),andBrunauer-Emmett-Teller(
