多级微纳米结构含铁化合物的控制合成及其性能研究

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1、AbstractInrecentyears，hierarcNcalmicro·／nanostructures谢mpeculiarmorphologiesandstructures，constructedbytheself-assemblyoftheselow—dimensionalbuildingblocks，havereceivedmoreandmoreattention．Thesehierarchicalmicro一／nanostructuresnotonlyshowthepropertiesofllano--structuredunit,butalsosh

2、owthepropertiesgenerat—edbythecouplingeffectsandsynergieseffects．Asaresult，theyexhibitdistinguisha-bleelectric，magnetic，optical，thenrmody’namicandmechanicalproperties．Thesynth—esisandself-organizationofmicro—andnanoscaleinorganicmaterialswimspecialmot-phology,size，andhierarchybecomet

3、hefoundamentalfordesignandinvestigationno-velnanodevices．Varioussyntheticmethodshavebeendevotedtothecontrolledsynthesisofhierar-cmcalmicro一／nanostructureswithspecificsizesandmorphologies．Amongthem，solution—phasesyntheticmethodshavemanyadvantages，includingrelativelylowreactiontern-per

4、atures，convenienceinhandling，inexpensivereactioninstruments，andeaseinproc—eduralcontrol，makingthemverypromisingforthelargescalesynthesisofmaterials．Inthisthesis，severalfacile，cost-efficientandenvironmentally—friendlyaqueoussolutionroutesweredevelopedforthesynthesisofflower-likehierar

5、chicalmicro-·／nanostructure·-s．undermildconditions．Themaincontentsareasfollows：1．Inthisarticle，flower-like11iemrcllicalferrihydritemicrostructureswerepreparedbythesimpleoxidationandhydrolysisofferricsulphateheptahydrate(FeS04’7H20)inthepresenceofthecitrateionasashape—directing／cappin

6、gagentatrooITltemperature．Owingtothelessexpensiveandnontoxicrawreactionmaterials，especiallywaterasthesolvent，Ourmethodrepresentsaneconomicandgreenapproachforthecontrolle—dsynthesisofflower-likehierarchicalferrihydrite．Flower-likehierarchicalferrihydritemicrostructuresexhibitenhancedp

7、hotocatalyticactivity,duetoitsnovelhierarchicalP-orousstructure，highersurfaceareaandcitratemodification，possessbetteradsorptionandphotocatalyticabilities．2。13-FeOOHmicrostructures、Ⅳi也flower-likemorphologiesweresuccessfullysyn-thesizedbyafacile5-sulfosalicylicaciddihydrate(SSA)·assist

8、edhydrotherm