二氧化鈦表面修飾及其催化性能分析.pdf

1、南京師范大學(xué)碩士學(xué)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(xué)位級別：碩士專業(yè)：化學(xué)；分析化學(xué)指導(dǎo)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