可作为可见光光催化剂的氮氟共掺杂TiO2纳米晶

J. Mater. Sci. Technol. ›› 2009, Vol. 25 ›› Issue (01): 73-76.

可作为可见光光催化剂的氮氟共掺杂TiO2纳米晶

孟艳玲;陈剑松;王莹;丁旵明;单永奎

Department of Chemistry; East China Normal University; Shanghai; 200062; China

收稿日期:2007-05-24 出版日期:2009-01-28 发布日期:2009-10-10
通讯作者: 丁旵明
基金资助:
教育部优秀青年教师资助计划项目、上海市青年科技启明星计划资助项目;

(N, F)-codoped TiO₂ Nanocrystals as Visible Light-activated Photocatalyst

Yanling Meng, Jiansong Chen, Ying Wang, Hanming Ding^† and Yongkui Shan

Department of Chemistry, East China Normal University, Shanghai, 200062, China

Received:2007-05-24 Online:2009-01-28 Published:2009-10-10
Contact: Hanming Ding

摘要/Abstract

摘要：

本论文采用溶胶-凝胶法制备了氮氟共掺杂的二氧化钛纳米晶。X射线电子能谱测试表明氮、氟部分取代了TiO2纳米晶中的氧原子。取代后的TiO2纳米晶在400-550 nm有较强的吸收，这主要来自于氮掺杂的贡献。而氟掺杂起着保持TiO2锐钛矿晶型的作用。N2吸脱附曲线表明该掺杂的TiO2纳米晶粉末没有介孔结构。氮氟共掺杂TiO2催化剂在可见光下对污染物亚甲基兰溶液有显著的降解效果。

关键词: TiO2纳米晶, 氮氟共掺杂, 溶胶－凝胶法, 可见光光催化剂

Abstract:

(N, F)-codoped anatase TiO₂ nanocrystals with active visible light response were prepared by using a simple sol-gel approach. X-ray photoelectron spectroscopy measurements suggested that the substitutional N and F species replaced the lattice oxygen atoms in TiO₂ nanocrystals. Such nanocrystals showed strong absorption from 400 to 550 nm, which was mainly induced by nitrogen doping. The phase transformation from anatase to rutile was hindered by fluorine doping at high calcination temperatures, which was verified by XRD patterns. The N2 adsorption-desorption isotherms revealed the absence of mesopores in these nanocrystals. The (N, F)- codoped TiO₂ nanocrystals showed satisfying photocatalytic activity on the photo-degradation of methylene blue under visible light.

Key words: TiO₂ nanocrystal, (N, F)-codoping, Sol-gel method, Visible light photocatalyst

孟艳玲陈剑松王莹丁旵明单永奎. 可作为可见光光催化剂的氮氟共掺杂TiO2纳米晶[J]. J. Mater. Sci. Technol., 2009, 25(01): 73-76.

Yanling Meng,Jiansong Chen,Ying Wang,Hanming Ding,Yongkui Shan. (N, F)-codoped TiO₂ Nanocrystals as Visible Light-activated Photocatalyst[J]. J Mater Sci Technol, 2009, 25(01): 73-76.

参考文献

[1 ] A.L. Linsebigler, G.Q. Lu and J.T. Yates: Chem. Rev., 1995, 95, 735.
[2 ] E. Borgarello, J. Kiwi, E. Pelizzette, M. Visca and M. Gr?atzel: Nature, 1981, 289, 158.
[3 ] H.M. Ding, H. Sun and Y.K. Shan: J. Photochem. Photobio. A: Chem., 2005, 169, 101.
[4 ] K. Domen, S. Naito, T. Onishi, K. Tamaru and M. Soma: J. Phys. Chem., 1982, 86, 3657.
[5 ] W. Choi, A. Termin and M.R. Ho?mann: J. Phys. Chem., 1994, 98, 13669.
[6 ] M.A. Fox and M.T. Dulay: Chem. Rev., 1993, 93, 341.
[7 ] R. Asahi, T. Morikawa, T. Ohwaki, K. Aoki and Y. Taga: Science, 2001, 293, 269.
[8 ] J.L. Gole, J.D. Stout, C. Burda, Y. Lou and X.B. Chen: J. Phys. Chem. B, 2004, 108, 1230.
[9 ] S. Sakthivel and H. Kisch: Angew. Chem. Int. Ed., 2003, 42, 4908.
[10] K.K. Nagaveni, M.S.Hegde, N. Ravishankar, G.N. Subbanna and G. Madras: Langmuir, 2004, 20, 2900.
[11] J.C.Yu, J.G.Yu, W.K. Ho, Z.T. Jiang and L.Z. Zhang: Chem. Mater., 2002, 14, 3808.
[12] D. Li, H. Haneda, S. Hishita, N. Ohashi and N.K. Labhsetwar: J. Fluorine Chem., 2005, 126, 69.
[13] T. Ohno, T. Mitsui and M. Matsumura: Chem. Lett., 2003, 32, 364.
[14] I. Nakamura, N. Negishi, S. Kutsuna, T. Ihara, S. Sug- ihara and K. Takeuchi: J. Mol. Catal. A: Chem., 2000, 161, 205.
[15] H. Wang and J.P. Lewis: J. Phys.: Condens. Matter., 2006, 18, 421.
[16] J.M. Herrmann, J. Disdier and P. Pichat: Chem. Phys. Lett., 1984, 108, 618.
[17] K. Nukumizu, J. Nunoshige, T. Takata, J.N. Kondo, M. Hara, H. Kobayashi and K. Domen: Chem. Lett., 2003, 32(2), 196.
[18] D. Li, H. Haneda, S. Hishita and N. Ohashi: Chem. Mater., 2005, 17, 2588.
[19] D. Li, H.Haneda, S. Hishita and N. Ohashi: Chem. Mater., 2005, 17, 2596.
[20] Y. Cao, F. Chen, J. Zhang and M. Anpo: Chem. Lett., 2006, 35, 800.
[21] D. Chen, Z. Jiang, J. Geng, Q. Wang and D. Yang: Ind. Eng. Chem. Res., 2007, 46, 2741.
[22] N.C. Saha and H.G. Tompkins: J. Appl. Phys., 1992, 72, 3072.
[23] X.B. Chen and C. Burda: J. Phys. Chem. B, 2004, 108, 15446.
[24] M. Miyauchi, A. Ikezawa, H. Tobimatsu, H. Irie and K. Hashimoto: Phys. Chem. Chem. Phys., 2004, 6, 865.