, Fe 3 + : : TG : A. Bard [2 ] ]. Asahi [9 ], ( SEM) ( Perkin Elmer ) 3101pc W

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1 EL ECTROCHEMISTR Y Vol 10 No 4 Nov 2004 : (2004) Fe 3 + 3,,,,, (, ) : Ti TiO 2, Fe 3 + Fe 3 +, Fe 3 +, : ; TiO 2 ; Fe 3 + ; : TG174 4 : A 1972 Fujishima Honda [1 ] TiO 2 Bard [2 ], [3 4 ], [5 6, ] Asahi, [7 ] [8 ] Fe [10 [9 ],, ],, 80 V 10 min, Fe 3 + ( SEM) 2 UV2 3101pc 2 ( Perkin Elmer ), 722M 150 W, 1 0 : , : : Tel : (86221) , E2mail com ( ), (0352nm074) China Academic Journal Electronic Publishing House All rights reserved

2 4 : Fe , 3 % KNO 3 PAR M273A 5210, 1,, 3 % KNO 3, ( ), ( ) Fe 3 + 1, Fig 1 Schematic diagram for the photo catalytsis, 2 of TiO 2 film Fe 3 + (1 08 %) TiO 2 WE: TiO 2 thin film, RE:SCE, CE:Ti SEM, Fe 3 + (1 08 %) XPS, C Ti O Fe Na P 6 Na P, C, XPS,2P 3/ eV, Fe Fe Fe 3 + Fe 3 +, TiO 2 Fe 3 +, Fe China Academic Journal Electronic Publishing House All rights reserved

3 Fe 3 + Fe 3 +, 1 Fe TiO 2 Fe 3 + Fe 3 + Tab 1 Variance of Fe 3 + contents in the TiO 2 thin film with Fe 3 + ion concentrations in the electrolyte solution Concetration of Fe 3 + ion in electrolyte/ %(by mass) Content of Fe( ) in film/ %(by mass) Atom content of Fe( ) in film/ % Fe Fe 3 + TiO 2 2, TiO 2 ( 1), Fe 3 +, [ 11 ], : TiO nm, Fe % 1 08 % 2 88 % 4 Fe 3 + TiO 2 2, 408 nm 431 Fig 4 UV2visible absorption spectra of the Fe nm 417 nm, Fe % doped TiO 2 films Fe 3 + Fe 3 + 3d ( ) (0 064 nm) (0 068 nm), 4, 2 4 Fe 3 + TiO 2,, 550 nm ( A ) ( C), : A = C (1) ( C) g/ L : C = ( A ) / (2), (A) TiO nm, ( %) 5, Fe 3 +, China Academic Journal Electronic Publishing House All rights reserved

4 4 : Fe Fe 3 + TiO 2 TiO 2, 3 2eV, 3 0 ev, (e - ), TiO 2 6 Fe 3 + TiO 2 150W, (0 10 min), A ( ),, 2 5, 1 43 A, A, 20 min, A Fig 5 TiO 2 f ilms degradate of methylene blue Fe 3 + TiO 2, ( 2 3 4) ( 1), Fe %, 4 Fe %,, Fe 3 +, 2 88 %, Fe %, Fe %, ( 2Fe 6 Fe O 3 ) ( Fe 2 TiO 5 ), TiO 2 TiO 2 Fe 2 O 3 Fe 2 TiO 5, 3 Fig 6 Variance of photo2current density with il2 lumination time for the TiO 2 thin f ilm doped Fe 3 + ion with different contents, Fe 3 + Fe 3 + TiO 2,, Fe 3 +, Fe 3 +, ; Fe %, China Academic Journal Electronic Publishing House All rights reserved

5 Effect of Fe 3 + Dopen of Titanium Dioxide Film on Absorption Spectra and Photo Catalysis XIAO Mei2qun 3,SHEN Jia2nian, L I Moucheng, WU Peng2fei, L IU Dong, ZHAN G Yu2juan ( Instit ute of M aterials Science, S hanghai U niversity, S hanghai , China) Abstract : Photo2catalytic titanium dioxide film in nano crystalline has been prepared by elec2 t rochemical oxidation process and adding different amount of ferric ion into t he elect rolyte during the anodic oxidation The effects of Fe 3 + dopen on absorption spectra and photo2catalytic of the ti2 tanium dioxide films have been studied It shows that the Fe 3 + dopen caused the red shife of the absorption edge for t he incoming light and exhibited t he improved p hotocatalytic reactivity Key words : Electrochemical oxidation,nano titanium dioxide film, Fe 3 + dopen,photocatalysis Reference s : [1 ] Fujishima A, Honda K Electrochemical photolysis of water at a semiconductor eletrode[j ] Nature,1972, 238 :37 [2 ] Bard A J Photoelectrochemistry and heterogenous photocatalysis at semiconductor [J ] Photochem,1979,10 (1) :59 [3 ] Fox M A, Dulay M Y Heterogeneous photocatalysis[j ] Chem Rev,1993,93(1) :341 [4 ] Linsebigler A L, Lu G, Yates J T Photocatalysis on TiO 2 surfaces :principles,mechanics and selected results [J ] Chem Rev,1995,95(3) :735 [ 5 ] Yanqin Wang,Humin Cheng, Yanzhong Hao,et al Preparation,chatacterization and photoelectrochemical be2 haviors of Fe( )2doped TiO 2 nanoparticles[j ]Joural of materials science, 1999,34 :3 721 [ 6 ] Choi W Termin A Hoffman M R The role of metal ion metal dopants in quantum2sized TiO 2 :correlation be2 tween photoreactivity and charge carrier recombination dynamics[j ] Phys Chem,1994,98 : [ 7 ] Asahi R, Morikawa T, Ohwaki T, et al Bvisible2light photocatalysis in nitrogen2doped titanium Qxides[J ] science,2001,293(13) :269 [ 8 ] SON G Jiangjiang,SHEN Jianian,L I Lingfeng,et al Characteristics and property of photo2cataytic nano crys2 talline titanium dioxide film prepared by electrochemical oxidation[j ] Journal of Chinese Society for Corrosion and Prection,2002,22(2) :98 (in Chinese) [ 9 ] SHEN Jianian, SON GJiangjiang, MA Hanbin The Proseminar on nano science and technology development on Shanghai Nano2porous titanium dioxide prepared by electrochemical oxidation process 2000 :368 (in Chi2 nese) [10 ] Birch J R, Burleigh T D Oxides formed on titanium by polishing,etching, anodizing,or thermal oxidizing [J ] Corrosion, 2000,56(12) :1 233 [11 ] Detlef W,Bahnemann,Claudius Kormann,et al Preparation and characterrization of quantum size zinc ox2 ide : A detalled spectroscopic study[j ] Journal of Physical Chemical,1987,91(14) : China Academic Journal Electronic Publishing House All rights reserved