•  
  •  
 

Corresponding Author

Zhen CHEN

Abstract

Three new nano thin films of α-Fe_2O_(3)、TiO_2 and α-Fe_2O_(3)-TiO_2 by doping their powder with sodium alginate polymer were prepared. Surface structure and catalytic activities of the films were characterized by FTIR、XRD、PL、TEM and I-V techniques. The results of UV-visible absorption showed that the methylene blue was mineralized in aqueous of α-Fe_2O_(3)/SA、TiO_2/SA and (α-(Fe_2O_(3)))-TiO_2 /SA upon radiation with ultra violet light. α-Fe_2O_(3) enhanced their photo-decolorized-activities by doping 15% TiO_2.

Keywords

α-Fe_2O_(3, ) α-Fe_2O_(3)-TiO_2, Nano materials, Sodium alginate

Publication Date

2004-11-28

Online Available Date

2004-11-28

Revised Date

2004-11-28

Received Date

2004-11-28

References

[1]HengleinA.Small particleresearch:physicochemicalpropertiesofextremelysmallcolloidalmetalandsemiconductorparticles[J].Chem.Rev.,1989,89:1861~1873.
[2]VogelR,HoyerP,WellerH.Quantum sizedPbS,CdS,Ag2S,Sb2S3andBi2S3particlesassensitizersforvariousnanoporouswide bandgapsemiconductors[J].J.Phys.Chem.,1994,98(12):3183~3188.
[3]DhananjeyanMR,MielczarskiE,ThampiKR,etal.PhotodynamicsandsurfacecharacterizationofTiO2andFe2O3photocatalystsimmobilizedonmodifiedpolyethylenefilms[J].J.Phys.Chem.B,2001,105:12046~12055.
[4]BedjaI,KamatPV.CappedsemiconductorcolloidssynthesisandphotoelectrochemicalbehaviorofTiO2cappedSnO2nanocrystallites[J].J.Phys.Chem.,1995,99(22):9182~9188.
[5]LakatosB,KoreczL,GeodermaM.Comparativestudyonthemoessbauerparametersofironhumatesandpolyuronates[J].Eur.Polym.J,1977,19:149~152.
[6] StramelRD,ThomasJK.Photochemistryofironoxidecolloids[J].J.ColloidandInterfaceScience,1986,110(1):121~129.
[7]SabateJ,AndersonMA,KikawaH,etal.AKineticstudyofthephotocatalyticdegradationof3 chlorosalicylicacidoverTiO2membranessupportedonglass[J].J.Catal.,1991,127:167~177.
[8]SoriaJ,ConesaJC,AugugliaroV,etal.Dinitrogenphotoreductiontoammoniaovertitaniumdioxidepowdersdopedwithferricions[J].J.Phys.Chem.,1991,95(1):274~282.
[9] ChenFeili,WangLiangyan,YangBaoshan.StudyonphotocatalyticdecompositionoforganicmicropollutantsindrinkingwaterusingreactorwithTiO2filmcoatingongrasstubesurface[J].ActaEnergiaeSolarisSinica,1999,20(4):471~475.
[10] SpurrRA,MyersH.Quantitativeanalysisofanatase rutilemixtureswithanx raydiffractometers[J].Anal.Chem.,1957,29:760~762.
[11] GaoWei,WuFeng qing,LuoZhen,etal.Studiesontherelationshipbetweenthecrystalformofanditsphotocatalyzingdegradationefficiency[J].ChemicalJournalofChineseUniversities,2001,22(4):660~662.
[12] BickleyR,Gonzalea CarrenoT,LeesJ.Preparationandcharacterizationofsometernarytitaniumoxidephotocatalysts[J].J.SolidStateChem.,1991,92:178~190.
[13] GadsdenJA.InfraredSpectraofMineralsandRelatedInorganicCompounds[M].USA:R.J.AcfordLtd,1975,45~48.
[14] FrankSN,BardAJ.Heterogeneousphotocatalyticoxidationofcyanideandsulfiteinaqueoussolutionsatsemiconductorpowders[J].J.Phys.Chem.,1977,81(15):1484~1488.
[15] FujishimaS,Writing,ChenZhen,YaoJian nian,Translation.ElectrochemDetermMethods[M].Beijing:BeijingUniv.PublishSociety,1995,356.
[16] CuiXiao li,JiangZhi yu.ElectrochemicalbehaviorofITO/TiO2electrodeunderUvillumination[J].ActaPhys.Chim.Sin.,2002,18(11):1014~1017.
[17] SpadaroJT,IsabelleL,RanganathanV.Hydroxylredicalmeduateddegradationofazodyesevidenceforbenzenegeneration[J].Environ.Sci.Technol.,1994,28:1389.
[18] FaustBC,HoffmannRH,BahnemannDW.Photocatalyticoxidationofsulfurdioxideinaqueoussuspensionsofα Fe2O3[J].J.Phys.Chem.,1989,93(17):6371~6381.
[19] TurnerJE,HendewerkM,ParmeterJ,etal.Thecharacterizationofdopedironoxideelectrodesforthephotodissociationofwater[J].J.Electrochem.Soc.,1984,131(8):1777~1783.

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.