CdS悬浮体系中硫化物水溶液的光解

295621PHOTOGRAHICSCIENCEANDPHOTOCHEMISTRYNoN.,198,.,.;l,,HZSHZRhZO3/CdS*(),CdsTi:.,,;,,.,.CdsRuo,,Cdst11;,TIO:,.,,.,,.();,(CdSCdse).Grtzel,,HsS[1].,t,,,.H.s,,.Rh,0,/Cds,,,Cds.Cds(99.995),Rhcl,,.R,/CdstRhcl,HtoCds.Rh,0.5.500W,10cmKro,(450nm).(I)..15,,,100.,A,401,,,.985826,1986421..,.19866O4o()z0064ƒ400500600700800(.,)1216(b).IKro(NDH)Absorp6on.peetrumofK,cro.(NaOH)sOludon2,DendeneeofH:produetiononillunatitime:o,/CdsT;--Rlt1O,/QUv365.2.4080mgRhto,/cds.1mol/LNa.S,,,.3.5d/h,10,.16,2.2/h,48.3d.,Tiq,3.,ml/h4.,d/h.,,1661.,ml.,.,sH,,11:V~0.060fog[SH1,Vf-0.66Vvs.NHE10,mol/L10InollLNs,v,b0.87v1.06V.,,,Pt,.,,.,.,,.pH.,.pH~12,4olnl0.05ollLNats(80.03/CdS),39.gml;,pH82,34.7,0.9d.3,.,.sHCdsCds(vfb),pH.:H,sH:Rh:o,/CdssH.,pHNa,,.,(,/Cds).,..Ruo:Cds,Cds1,.Rh*0,CdS,cds.30e+,RuO:/Cds:03/cdscd,+0.1/0.05g/ml.CdSRhso/Cds,RhtO,CdS,.(.0.,RuO:0.5.O,_Cds,,3,6.,d,9.6d.,/CdsRuO./Cds.,o,/Cds:,,[CdS]++e-,ZeZH,OH:20H-,2++-SOHHss,H.O,20H+H.SZHsO-,:HSH:+S/zeO,0ƒ)42(t„4681012,}{o.J-.1J00400600600700800(m)13pHtDepeodenceofH:produetiononpH.4,o,IcdsCdss;--,sRefleetaneespectraofRh,o,/Cdsandcds541956Rh.03,CdS.;,.,11a.Borgarello,E,,Kalnaoundaram,K.,Gratz,M,Pelizzetti,E.,Hel.C.cra,1982,65,243.b.Borgrello,E.,Erb,W.,Gratzel,M.,N,,.J.Ci,,1983,7(3),195.c.Borprello,EDelil,e:tro,J.,Gratzel,M.,Pelizzetti,E,HelC.cra,1983,66,1827.[2]The*.en,D.H.M.W.,Tinmans,A.H.D,EeuwhorsReinten,M.,Timmer,K,Mckor,A,No,..J.C,.,1983,7(3),191.VISIBLELIGHTINDUCEDFORMATIONOFHZFROMH:SHEYN^i(L,:ouYI1.5iSHuYuLIQ;NeINLlSHuaENofCe.icalPyics,AJeia51ica)BSTRACTTogetanimProvedehemiealstabilityofCdS,verysmallquantitiesofR0.weredeposi-redontheCdSParrielesandaPhotoeatalytiesystemconsistingofRhtO./CdSfortheeleavageofHsSorsulfideintohydrenandsulfurdrivenbyvisiblelightwasinvestigated.AfterabriefinduetionPeriodthehydrogenwasgeneratedatrate3.5mlfromirradiatinga40ml.olutioneontaining80mgR/CdSinthePreseneeof0.1mol/LNasS.Additionof100mganaraseTiototheR/CdSsusPensionincreasedtherateofH:produetionto4.5ml/h.WithsulfideconsumPtion,therateofH,Productiondeereased.UPonreadditionofsulfideandre-illuminationhydrogengenerationresumedattheinitialrate.CdSPartielesloadedwithRh,inhibitedphotoeorrosionsineeonly0.0,g/m1ea,+ionwasdeteetedafterirraaiatingwithvlsiblelightfor30hours.TherefleetaneesPeetraofCdSandR/CdseonfirmedthatRli*OdePositedontheCdSPartielesmarkedlyenhaneedthelightabsorPtioninthevisiblere-gion.Apossiblephotoeatalytiemeehanismwassuggested