金属氧化物纳米材料的制备、表征及应用

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1、西北师范大学硕士学位论文金属氧化物纳米材料的制备、表征及应用姓名：李生英申请学位级别：硕士专业：分析化学指导教师：高锦章;杨武2003.5.18—L—iS．h．en．g．yi．ng—：—P。re．p．ar．a，ti．on．,．C—ha—r—ac，te—r—iz—at—io—n—a—nd—A—p—p—lic—a—ti—on—o—f—M—e—ta—l—ox—M—e—n—a—no—m—ateriats．．．．——。．——。————AbstractStone，broke，iron：civilizationhasalwaysbeendefinedbyMan’Srelation

2、shipwithmaterials．Nowadays，materialshavebecomeallintegralpartofoursociety,aswellasourdailylife．Muchofthetechnologicalprogressisdirectlyorindirectlydependentontheavailabilityofadvancedmaterials埘thimprovedfunctions．Nanomaterialsisanewclassofmaterialsthathasbeenmakingasilentrevolutioninth

3、elastdecade．Itisthefoundationofthenanoteehnology，andiscausingallextensiveconcelTlofallovertheworld。Thepropertiesofthenanomaterialsshowremarkableimprovementordeviationfromthepropertiesexhibitedbythecoarsergrainedmaterials．Theyexhibituniqueoptical，magnetic，electric，orcatal),ticproperties

4、．Thesepropertiesareattributedtothesignificantincreaseingrainboundaryareaduetothesmallgrainsize，andareneithercorrespondstOthoseofthefreeatomsormoleculesmakinguptheparticlenortOthoseofthebulksolidswithidenticalchemicalcomposition．Areasofapplicationthatcarlbeforeseentobenefitfromthesmalls

5、izeincludequantumelectronics．nonlinearoptics，photonics，chemoselectivesensing，andinformationstorageandprocessing，adsorbents，catalysis，solarcells，magneticrecordingdevices，superplasticceramics，superhardmetals，metastablealloysandSOon．Ingenera／，researchesinnanomaterialsfiremainlyconcernedwi

6、ththedevelopmentofnewsynthesismethods，newwaysofidentilyingandcharacterizingmaterials，andtheapplicationsofthem．Ofcourse，thefirststepisthesynthesisoftherequiredmaterial．Inthelastfewyears,thekeydirectionofnanomaterialslayinthesearchfornewsynthesismethodsofnanomaterialswithdesiredandcontro

7、llableproperties。Atthesametime，thecharacterizationofmaterialsisacriticalingredienttoprogress，becauseitprovidesguidanceforfilrtherresearchefforts．Thisthesisreportsonthestudyofthepreparation，characterization,andapplicationofmetaloxidenanomateriats。w堍邋茧qualityandlowcost，microwaveirradia