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1、www.MaterialsViews.comwww.particle-journal.comFULLPAPERComparingtheContributionofVisible-LightIrradiation,GoldNanoparticles,andTitaniaSupportsinPhotocatalyticNitroaromaticCouplingandAromaticAlcoholOxidationJianZhao,XuebinKe,HongweiLiu,YimingHuang,ChaoChen,ArixinBo,XianliangSheng,andHuaiyongZh
2、u*newphotocatalystswithexcellentper-Undervisible-lightirradiation,goldnanoparticles(AuNPs)supportedbytitaniaformanceforbothselectivereductionof(TiO2)nanofibersshowexcellentactivityandhighselectivityforbothreduc-nitroaromaticsandoxidationofaromatictivecouplingofnitroaromaticstocorrespondingazo
3、benzeneorazoxylbenzenealcoholsundervisiblelightirradiation.Goldnanoparticles(AuNPs)canandselectiveoxidationofaromaticalcoholstocorrespondingaldehydes.Thestronglyabsorbvisiblelightduetolocal-AuNPsactasactivecentersmainlyduetotheirlocalizedsurfaceplasmonizedsurfaceplasmonresonance(LSPR)resonanc
4、e(LSPR)effect.Theycaneffectivelycouplethephotonicenergyandeffect.[10–13]LSPRarisesfromthecollectivethermalenergytoenhancereactionefficiency.Visible-lightirradiationhasoscillationofconductionelectronsinthemoreinfluenceonthereductionthanontheoxidation,loweringtheactiva-NPs,whichresonatewiththee
5、lectromag-−1neticfieldoftheincidentlight.[13,14]Thetionenergyby24.7kJmolandincreasingtheconversionrateby88%forthe−1lightabsorptionoftheseparticlesdependsreductivecoupling,comparedtomerely8.7kJmoland46%fortheoxidation.[15,16]ontheirshapeandsize,whichmeansFurthermore,itisfoundthattheconversiono
6、fnitroaromaticssignificantlythatitispossibletomanuallydesignnano-dependsontheparticlesizeandspecificsurfaceareaofsupportedAuNPs;structurestoutilizetheentiresolarspec-andthecatalystonTiO2(B)supportoutperformsthatonanatasephasewithtrumbymanipulatingtheseproperties.Inpreferableabilitytoactivateo
7、xygen.Incontrast,fortheselectiveoxidation,theaddition,theconductionelectronsofAuNPsgaintheirradiationenergy,becomingeffectofsurfaceareaislessprominentandAuNPsonanataseexhibithigherexcitedenergeticelectronsattheNPsur-photo-catalyticactivitytha
