The N- doped TiO2 polycrystalline powder was synthesized through calcining the hydrolysis product of tetra-butyl titanate with ammonia. The photocatalytic activity of N-doped TiO2 powder with anatase phase calcined at 400 ℃ was 2.7 times higher than that of Degussa P25 for phenol decomposition under visible light. All samples had mesoporous structures. X- ray photoelectron spectroscopy corfirmed that a trace amount of N atoms remained in the anatase polycrystalline TiO2 powder when calcined at 400 ℃ as substitutional atoms at the oxygen sites. UV-Vis and EPR analyses indicated that oxygen vacancy states were created during the course of N-doped TiO2 powder formation. It is considered that substitutional N atoms, oxygen vacancy states, large BET surface areas and mesoporous structure are important factors for the N-doped photocatalyst to present a high vis-activity.
参考文献
| [1] | Fujishima A;Honda K .Electurochemical Photolysis of Water at a Semiconductor Electrode[J].Natare,1972,238:37-38. |
| [2] | Epling GA.;Lin C. .Photoassisted bleaching of dyes utilizing TiO2 and visible light[J].Chemosphere,2002(4):561-570. |
| [3] | Yingxu Chen;Kan Wang;Liping Lou .Photodegradation of dye pollutants on silica gel supported TiO_2 particles under visible light irradiation[J].Journal of Photochemistry and Photobiology, A. Chemistry,2004(1/2):281-287. |
| [4] | Teruhisa Ohno;Fumihiro Tanigawa;Kan Fujihara;Shinobu Izumi;Michio Matsumura .Photocatalytic oxidation of water by visible light using ruthenium-doped titanium dioxide powder[J].Journal of Photochemistry and Photobiology, A. Chemistry,1999(1/3):107-110. |
| [5] | Umebayashi T;Yamaki T;Itoh H;Asai K .Band Gap Narrowing of Titanium Dioxide by Sulfur Doping[J].Applied Physics Letters,2002,81:454-457. |
| [6] | Khan S U M;Mofareh Al-Shahry;William B Ingler .Efficient Photochemical Water Splitting by a Chemically Modified n-TiO2[J].Science,2001,297:2243-2245. |
| [7] | T. Yamaki;T. Sumita;S. Yamamoto .Formation of TiO_(2-x)F_x compounds in fluorine-implanted TiO_2[J].Journal of Materials Science Letters,2002(1):33-35. |
| [8] | T. Yamaki;T. Umebayashi;T. Sumita;S. Yamamoto;M. Maekawa;A. Kawasuso;H. Itoh .Fluorine-doping in titanium dioxide by ion implantation technique[J].Nuclear Instruments and Methods in Physics Research, Section B. Beam Interactions with Materials and Atoms,2003(0):254-258. |
| [9] | Lettmann Christian;Hildenbrand Knut;Kisch Horst et al.Visible Light Photodegradation of 4-chlorophenol with a Cokecontaining Titanium Dioxide Photocatalyst[J].Applied Catalysis B:Environmental,2001,32:215-227. |
| [10] | Hager S.;Kudielka G.;Bauer R. .Photocatalytic oxidation of gaseous chlorinated organics over titanium dioxide[J].Chemosphere,2000(8):1219-1225. |
| [11] | Yu Jia-Guo,ZHAO Xiu-jian,ZHANG Gao-ke,HAN Jian-jun,ZHAO Qing-nan.Grain Size and Photocatalytic Activity of Nanometer TiO2 Thin Films Prepared by the Sol-gel Method[J].武汉理工大学学报(材料科学版)英,2001(02):1-5. |
| [12] | 魏建红,XIAO Jing,ZHAO Xiu-jian,GUAN Jian-guo,YUAN Run-zhang.Preparation of Ag-doped TiO2 Thin Film by Sol-gel Method[J].武汉理工大学学报(材料科学版)英,2001(04):27-30. |
| [13] | Falconer JL.;Magrini-Bair KA. .Photocatalytic and thermal catalytic oxidation of acetaldehyde on Pt/TiO2[J].Journal of Catalysis,1998(1):171-178. |
| [14] | Driessen M D;Grassian V H .Photo-oxidation of Trichloroethylene on Pt/TiO2[J].Journal of Physical Chemistry B,1998,102(08):1418-1423. |
| [15] | Tatsuma T;Tachibana S;Fujishima A .Remote Oxidation of Organic Compounds by UV-Irradiated TiO2 via the Gas Phase[J].Journal of Physical Chemistry B,2001,105(29):6987-6992. |
| [16] | Iwasaki M.;Kawada H.;Tada H.;Ito S.;Hara M. .Cobalt ion-doped TiO2 photocatalyst response to visible light[J].Journal of Colloid and Interface Science,2000(1):202-204. |
| [17] | Kato Hideki;Kudo Akihiko .Visible Light Response and Photocatalytic Activities of TiO2 and SrTiO3 Photocatalysts Codoped with Antimony and Chromium[J].Journal of Physical Chemistry B,2002,106(19):5029-5034. |
| [18] | Karakitsou K E;Verykios X E .Effects of Altervalent Cation Doping of Titania on its Performance as a Photocatalyst for Water Cleavage[J].Journal of Physical Chemistry,1993,97(06):1184-1189. |
| [19] | Choi W;Termin A;Hoffmann M R .The Role of Metal Ion Dopants in Quantum-Sized TiO2:Correlation between Photoreactivity and Charge Carrier Recombination Dynamics[J].Journal of Physical Chemistry,1994,98(51):13669-13679. |
| [20] | J. -M. Herrmann;H. Tahiri;Y. Ait-Ichou;G. Lassaletta;A. R. Gonzalez-Elipe;A. Fernandez .Characterization and photocatalytic activity in aqueous medium of TiO_2 and Ag-TiO_2 coatings on quartz[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,1997(3/4):219-228. |
| [21] | Awati PS;Awate S V;Shah P P;Ramaswamy V .Photocatalytic Decomposition of Methylene Blue using Nanocrystalline Anatase Titania Prepared by Ultrasonic Technique[J].Catalysis Communications,2003,4(08):393-400. |
| [22] | Asahi R;Morikawa T;Ohwaki K;Taga Y .Visible-light Photocatalysis in Nnitrogen-doped Titanium Oxides[J].Science,2001,293:269-271. |
| [23] | Morikawa T;Asahi R;Ohwaki T et al.Band-Gap Narrowing of Titanium Dioxide by Nitrogen Doping[J].Japanese Journal of Applied Physics Part,2001,40:561-563. |
| [24] | Sakatani Y;Koike H .Titanium Oxide,Photocatalyst Produced By Using the Oxide and Photocatalytic Coating Agent[P].JP 2001072419,2001-03-21. |
| [25] | T.Ihara;M.Miyoshi;Y.Iriyama;O.Matsumoto;S.Sugihara .Visible-light-active titanium oxide photocatalyst realized by an oxygen-deficient structure and by nitrogen doping[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2003(4):403-409. |
| [26] | Akira Fujishima;Tata N. Rao;Donald A. Tryk .Titanium dioxide photocatalysis[J].Journal of photochemistry and photobiology, C. Photochemistry reviews,2000(1):1-21. |
| [27] | Jimmy C.Yu;Jiaguo Yu;Jincai Zhao .Enhanced photocatalytic activity of mesoporous and ordinary TiO_2 thin films by sulfuric acid treatment[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2002(1):31-43. |
| [28] | Shah SI.;Li W.;Huang CP.;Jung O.;Ni C. .Study of Nd3+, Pd2+, Pt4+, and Fe3+ dopant effect on photoreactivity of TiO2 nanoparticles[J].Proceedings of the National Academy of Sciences of the United States of America,2002(Suppl.2):6482-6486. |
| [29] | Jimmy C. Yu;Jiaguo Yu;Lizhi Zhang;Wingkei Ho .Enhancing effects of water content and ultrasonic irradiation on the photocatalytic activity of nano-sized TiO_2 powders[J].Journal of Photochemistry and Photobiology, A. Chemistry,2002(1/3):263-271. |
| [30] | Huang W;Tang X;Wang Y.Selective Synthesis of Anatase and Rutile via Ultrasound Irradiation[J].CHEMISTRY COMMUNICATIONS,2000(15):1415-1416. |
| [31] | Tahiri H;Serpone N;LevanMao R .Application of Concept of Relative Photonic Efficiencies and Surface Characterization of a New Titania Photocatalyst Designed for Environmental Remediation[J].Journal of Photochemistry and Photobiology A:Chemistry,1996,93(2-3):199-203. |
| [32] | Beata Zielinska;Joanna Grzechulska;Antoni W. Morawski .Photocatalytic decomposition of textile dyes on TiO_2-Tytanpol A11 and TiO_2-Degussa P25[J].Journal of Photochemistry and Photobiology. A, Chemistry,2003(1):65-70. |
| [33] | Fabreguette F;ImhoV L;Guillot J et al.Temperature and Substrate Influence on the Structure of TiNx Oy Thin Films Grown by Low Pressure Metal Organic Chemical Vapour Deposition[J].Surface and Coatings Technology,2000,125(1-3):396-399. |
| [34] | Irie I;Watanabe Y;Hashimoto K .Nitrogen-Concentration Dependence on Photocatalytic Activity of TiO2 x Nx Powders[J].Journal of Physical Chemistry B,2003,107(23):5483-5486. |
| [35] | Saha N C;Tompkins H G .Titanium Nitride Oxidation Chemistry:An X-ray Photoelectron Spectroscopy Study[J].Journal of Applied Physics,1992,72(07):3072-3079. |
| [36] | Shanmugastmdaram S;Horst K .Photocatalysis by CarbonModified Titanium Dioxide[J].Angewandte Chemie International Edition,2003,42:4908-4911. |
| [37] | Nakamura I.;Kutsuna S.;Ihara T.;Sugihara S.;Takeuchi E.;Negishi N. .Role of oxygen vacancy in the plasma-treated TiO2 photocatalyst with visible light activity for NO removal[J].Journal of molecular catalysis, A. Chemical,2000(1/2):205-212. |
| [38] | Serwicka E .Esr Study On The Interaction Of Water Vapour With Polycrystalline TiO2 Under Illumination[J].COLLOIDS AND SURFACES,1985,13(04):287-293. |
| [39] | Liu H;Ma H T;Li X Z et al.The Enhancement of TiO2 Photocatalytic Activity by Hydrogen Thermal Treatment[J].Chemosphere,2003,50(01):39-46. |
| [40] | Nakamura I.;Kutsuna S.;Ihara T.;Sugihara S.;Takeuchi E.;Negishi N. .Role of oxygen vacancy in the plasma-treated TiO2 photocatalyst with visible light activity for NO removal[J].Journal of molecular catalysis, A. Chemical,2000(1/2):205-212. |
| [41] | Tit Nacir;Halley J W;Michalewicz Marek T et al.Role of Oxygen Vacancies in Anodic TiO2 Thin Films[J].Applied Sueface Science,1993,65-66(1-4):246-251. |
| [42] | A.Piscopo;D.Robert;J.V.Weber .Comparison between the reactivity of commercial and synthetic TiO_2 photocatalysts[J].Journal of Photochemistry and Photobiology, A. Chemistry,2001(2/3):253-256. |
| [43] | Fernandez-Ibanez P.;Malato S.;de las Nieves FJ. .Titanium dioxide/electrolyte solution interface: Electron transfer phenomena[J].Journal of Colloid and Interface Science,2000(2):510-516. |
| [44] | chunde Wu;xinhui Liu;Dongbin Wei .Photosonochemical degradation of phenol in water[J].Water research: A journal of the international water association,2001(16):3927-3933. |
| [45] | Andrzej Sobczynski;Lukasz Duczmal;Wojciech Zmudzinski .Phenol destruction by photocatalysis on TiO_2:an attempt to solve the reaction mechanism[J].Journal of molecular catalysis, A. Chemical,2004(2):225-230. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%