[emuch.net][1476217]Angew2011

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1、CommunicationsDOI:10.1002/anie.201101969PhotocatalystsAHighlyActiveTitaniumDioxideBasedVisible-LightPhotocatalystwithNonmetalDopingandPlasmonicMetalDecoration**QiaoZhang,DianaQ.Lima,IlkeunLee,FranciscoZaera,MiaofangChi,andYadongYin*SincethediscoveryofitsphotocatalyticactivityunderUVi

2、ncompatibilitybetweenthesynthesis,doping,anddecorationlight,TiO2hasbeenwidelystudiedasaphotocatalystinproceduresmeansthattheproductionofsuchnanocompo-[1]applicationssuchaswatersplittingandpurification.Assiteshasremainedagreatchallenge.pristineTiO2onlyabsorbsUVlight,muchefforthasbeenW

3、ereporthereinthedesignandsynthesis,bycombiningdevotedtodevelopingvisible-light-activeTiO2photocatalystssimplesol–gelandcalcinationprocesses,ofahighlyefficient,thatcanmakeuseofbothUVandvisibleradiation.Manystable,andcost-effectiveTiO2-basedphotocatalystwiththe[2][3]strategies,includin

4、gmetal-ionandnonmetaldoping,havedesiredpropertiesmentionedabove.ThenewcatalysthasabeenproposedtoextendtheabsorptionofTiO2tothevisiblesandwichstructurethatcomprisesaSiO2core,alayerofgoldspectrum,but,todate,newmaterialshavetypicallysufferednanoparticles(AuNPs),andadopedTiO2nanocrystall

5、inefromlowdopingconcentrationand/orlowstabilityagainstshell.Thesol–gelprocessallowsfortheconvenientincorpo-[3d,4]photocorrosion.Noble-metalnanoparticlessuchasAurationofAuNPsintothecatalystwithcontrolledloadingandandAghavealsobeenusedtoenhancetheactivityoflocation.TiO2isdopedwithbothN

6、andCusinganphotocatalystsinvisiblelightbecauseoftheirplasmonicunconventionalmethodthatinvolvesintroducing3-amino-[5]properties.Inanycase,animprovedabsorptionofphotonspropyl-triethoxysilane(APTES),whichoriginallyactsasamaynotnecessarilyguaranteesignificantlybetterphoto-ligandforimmobi

7、lizationofAuNPsonthesurfaceoftheSiO2catalyticperformancebecausetheefficiencyofaphoto-support,butuponsubsequentdecompositionathightemper-catalystisalsodeterminedbychargeseparationandtrans-atureservesasasourceofbothNandCfordoping.port.AsmostexcitedchargesmayrecombineandquenchComparedto

8、traditionalA