Preparation and Visiblelight Photo-catalytic Activity of Cr-doped TiO<sub>2</sub> Composite Film

BAI Ai-ying; LIANG Wei; ZHENG Geng-le; XUE Jin-bo

Journal of Beijing University of Technology > 2012 > 38(2): 305-309.

BAI Ai-ying, LIANG Wei, ZHENG Geng-le, XUE Jin-bo. Preparation and Visiblelight Photo-catalytic Activity of Cr-doped TiO₂ Composite Film[J]. Journal of Beijing University of Technology, 2012, 38(2): 305-309.

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Preparation and Visiblelight Photo-catalytic Activity of Cr-doped TiO₂ Composite Film

1. College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
2. Xin Zhou Vocational Technical College, Xinzhou 034000, Shanxi, China;
3. Second Artillery Sergeant School, Qingzhou 262500, Shandong, China

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Received Date: June 20, 2010
Available Online: November 02, 2022

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Abstract

Cr-TiO₂ composite films were prepared by a sol-gel and high vacuum evaporation method.The effects of Cr-doped on the microstructure,light absorption property,and photocatalytic activity of the samples were investigated.X-ray diffraction (XRD),scanning electron microscopy (SEM),and UV-vis absorption spectra (UV-vis) were used to characterize the obtained films.The photo-catalytic activity of as-prepared films was evaluated through the degradation of methylene blue.Results show that the plating layer of composite film exists as metallic Cr at 723 K and oxidized Cr₂O₃ at 823 K.The absorption edge shifted from an ultraviolet region for TiO₂ to a visible light range for annealed Cr-doped TiO₂ films.More and more Cr³⁺ diffuses into TiO₂ thin film with increasing treated temperature,which leads to intense visible-light absorption.The degradation experiments show that the maximum visible-light catalytic activity is obtained at 823 K.The degradation of methylene blue is close to 40% under visible light irradiation for 2 h.
- sol-gel,
- vacuum evaporation,
- Cr-doped,
- composite film,
- visible-light catalytic activity

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[1]	FUJISHIMA A,RAO T N,TRUK D A.Titanium dioxide photocatalysis[J].J Photochem Photobiol C:Photochem Rev,2000(1):1-21.
[2]	LI G Q,LIU C Y,LIU Y.Different effects of cerium ions doping on properties of anatase and rutile TiO 2[J].Appl Surf Sci,2006(253):2481-2486.
[3]	CHOI W Y,TERMIN A,HOFFMANN M R.The role of metal ion dopants in quantum-sized TiO 2:correlation between photoreactivity and charge carrier recombination dynamics[J].J Phys Chem,1994,84:13669-13679.
[4]	PIERA E,TEJEDOR M I,ZORN M E,et al.Relationship concerning the nature and concentration of Fe(III)species on the surface of TiO 2 particles and photocatalytic activity of the catalyst[J].Appl Catal B,2003,46(4):671-685.
[5]	YU J G,ZHOU M H,YU H G,et al.Enhanced Photoinduced super-hydrophilicity of the sol-gel derived TiO 2 thin films by Fe-doping[J].Material Chemistry and Physics,2006,95:193-196.
[6]	WILKE K,BREUER H D.The influence of transition metal doping on the Physical and photo-catalytic properties of titania[J].Journal of Photochemistry and Photobiology A:Chemistry,1999,121:49-53.
[7]	SONAWANE R S,KALE B B,DONGARE M K.Preparation and photocatalytic activity of Fe-TiO 2 thin films prepared by sol-gel dip coating[J].Mater Chem Phys,2004,85(1):52-57.
[8]	ZHU F S,ZHU J,ZHENG W,et al.Anpo M.Characterization of Fe-TiO 2 photocatalysts synthesized by hydrothermal method and their photocatalytic reactivity for photodegradation of XRG dye diluted in water[J].J Mol Catal A,2004,216(1):35-43.
[9]	RADECKA M,WIERZBICKA M,KOMORNICKI S,et al.Influence of Cr on photoelectrochemical properties of TiO 2 films[J].Physica B,2004,348(1-4):160-168.
[10]	ANPO M,TAKEUCHI M,IKEUE K,et al.Design and development of titanium oxide photocatalysts operating under visible and UV light irradiation:the applications of metal ion-implantation techniques to semiconducting TiO 2 and Ti/zeolite catalysts[J].Curr Opin Solid State Mater Sci,2002,6(5):381-389.
[11]	SUMITA T,YAMAKI T,YAMAMOTO S,et al.Photoinduced surface charge separation in Cr-implanted TiO 2 thin film[J].Thin Solid Films,2002,416(1-2):80-84.
[12]	FIGUEIREDO V,ELANGOVAN E,GONALVES G,et al.Effect of post-annealing on the properties of copper oxide thin films obtained from the oxidation of evaporated metallic copper[J].Applied Surface Science,2008,254(13):3949-3954.
[13]	MOHEMMED SHANID N A,ABDUL KHADAR M.Evolution of nanostructure,phase transition and band gap tailoring in oaxidized Cu thin films[J].Thin Solid Films,2008,516(18):6245-6252.
[14]	白爱英,梁伟,云洁,等.掺杂铂的二氧化钛薄膜光催化性能[J].材料热处理学报,2010,31(2):6-9.BAI Ai-ying,LIANG Wei,YUN Jie,et al.Photocatalysis properties of Pt doped titanium oxide film[J].Journal of Transactions of Materials and Heat Treatment,2010,31(2):6-9.(in Chinese)
[15]	田宝柱,李春忠,顾锋,等.喷雾燃烧热分解制备Cr掺杂TiO2纳米粒子的可见光催化性能[J].无机材料学报,2009,24(4):661-665.TIAN Bao-zhu,LI Chun-zhong,GU Feng,et al.Visible-light photocatalticactivity of Cr-doped TiO2 nanoparticles synthesized by flame spray pyrolysis[J].Journal of Inorganic Materials,2009,24(4):661-665.(in Chinese)
[16]	SEERY M K,GEORGE R,FLORIS P,et al.Silver doped titanium dioxide nanomaterials for enhanced visible light photocatalysis[J].J Photochem Photobiol A:Chem,2007,189(2-3):258-263.
[17]	ZHAO Y,LI C,LIU X,et al.Zn-doped TiO 2 nanoparticles with high photocatalytic activity synthesized by hydrogen-oxygen diffusion flame[J].Appl Catal B:Environ,2008,79(3):208-215.
[18]	DING Kai-ning,ZHANG Yang-fan,LI Yi,et al.Theoretical study of Cr Doped into TiO 2(110)Surface[J].Chinese Journal of Structural Chemistry,2005,24(6):673-678.

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Preparation and Visiblelight Photo-catalytic Activity of Cr-doped TiO₂ Composite Film