二氧化鈦表面修飾及其催化性能分析.pdf

1、南京師范大學碩士學位論文二氧化鈦表面修飾及其催化性能分析姓名：黃鶴勇申請學位級別：碩士專業(yè)：化學；分析化學指導教師：馮玉英20100526AbstractAbstractComparedwiththetraditionalmethodsinthephoto—degradationoforganicpollutants，nanometerscaletitaniumdioxide(Vi02)，amostpromisingphotocatal

2、ysts，hasattractedcentredattentionduetoitsownphysicalandchemicalcharacteristicsHowever，pureTi02cannotutilizethevisiblelight觸lyandthephotogenerateelectronsandholesrecombinerapidlywhichwouldlimittheoptimalapplicationofitHen

3、cenumerouseffortshavebeendevotedtobroadeningthescopeofitsapplication眥sdissertationfocusesonthestudiesaboutthesynthesis，characterizationandpropertiesofsurfacemodifiedTi02nanoparticlesSomenovelandvaluableresultshavebeenobt

4、ainedwhicharebrieflysummarized嬲follows：1ThephotocatalyticdegradationofRhodamineB(RhB)onTi02nanoparticalmodified、)17itllporphyrin(P0andFe(III)porphyrin(Fe(III)PO，whichwerepreparedthroughthechemisorptionmehtod，havebeeninve

5、stigatedunderultravioletlightandvisiblelightirradiationTheresuRsindicatedthatthephotodegradationofRhBWassignificantlyenhancedinthepresenceofthePr／Ti02OrFe(111)Pr／Ti02comparingwiththenonmodifiedTi02underultravioletlight，b

6、utundervisiblelight，onlyPr／Ti02hasremarkableeffect2Thephotoreductionofnitrobenzene州B)OllTi02nanoparticlesmodified、航masparagine(Asp)，serine(Ser)，phenylalanine(ehe)andtyrosine(Tyr)，whichwerefoundtobindtoTi02viacarboxylgrou

7、p，havebeeninvestigatedunderhighpressuremercuryirradiationModificationofTi02塒tllAsp，SerandPheresultedinenhancedphotocatalyticdegradationrateofNBandhi曲selectiveactivitytoaniline(AN)comparedtousingbareTi02Furthermore，NBdegr

8、adationfollowedareductiveapproachOVerAsp，SerPhemodifiedTiQwhetherinadditionalofmethanolornot。碭eresultindicatethatmodificationofTi02、)I，itllelectrondonatinggroupsis鋤effectivewaytoenhancephotoreductionofnitroaromaticcompou