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Zr 离子掺杂 |
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TiO2 |
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可见光响应 |
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光催化 |
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王恩君 |
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杨辉云 |
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曹亚安 |
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Article by Wang, E. J. |
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Article by Yang, H. Y. |
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Article by Cao, E. A. |
本文采用溶胶-凝胶法制备了Zr离子掺杂TiO2光催化剂。光催化降解对氯苯酚实验表明，Zr离子掺杂浓度为10%时活性最高，其紫外光、可见光催化活性分别是纯TiO2的1.5倍和4倍。利用XRD、Raman、XPS、UV-Vis DRS、PL等技术对样品进行了表征，结果表明：Zr离子以取代式掺杂方式进入TiO2晶格，在TiO2导带下方形成掺杂能级，增强了可见光响应，促进了光生载流子的分离，此外Zr离子掺杂在催化剂表面引入大量表面缺陷，增加了表面羟基物种，从而使得Zr离子掺杂TiO2光催化剂的紫外、可见光催化活性显著提高。
TiO2 doped by different contents of zirconium ions were prepared by sol–gel method. The experiments of 4-chlorophenol photocatalytic degradation showed that TiO2 with zirconium doped content at 10% exhibits the best photocatalytic activity. Its photocatalytic efficiency is 1.5 and 4 times as high as that of pure TiO2 under ultraviolet and visible light. The samples were characterized by XRD, Raman, XPS, UV-Vis DRS and PL. It was revealed that zirconium ions substituted the lattice titanium ions in TiO2 lattice. And thus, the doping energy level attributed to the zirconium dopant was located at 0.3 eV below the conduction band of TiO2, which enhanced the response to the visible light and accelerated the separation of photogenerated carries. In addition, more surface defects and hydroxyls were presented on the surface of zirconium doped TiO2. Consequently, the zirconium doped TiO2 showed improved photocatalytic activity for photodegradation of 4-chlorophenol compared to pure TiO2 under both UV and visible light irradiation.
国家自然科学基金(Nos. 20573060，50872056)
1 Fujishima, A.; Zhang, X.; Tryk, D. A. Surf. Sci. Rep. 2008,63, 515. 
2 Thompson, T. L.; Yates, J. T. Jr. Chem. Rev. 2006, 106,4428.
3 Chen, X. B.; Mao, S. S. Chem. Rev. 2007, 107, 2891.
4 Cao, Y.; Yang, W.; Zhang, W.; Liu, G.; Yue, P. New J.Chem. 2004, 28, 218.
5 Zhu, J.; Ren, J.; Huo, Y.; Bian, Z.; Li, H. J. Phys. Chem. C 2007, 111, 18965.
6 Yang, Y.; Wang, H.; Li, X.; Wang, C. Mater. Lett. 2009, 63,331.
7 Li, F. B.; Li, X. Z.; Hou, M. F. Appl. Catal. B 2004, 48, 185.
8 Nagaveni, K.; Hegde, M. S.; Madras, G. J. Phys. Chem. B 2004, 108, 20204.
9 Bhattacharyya, K.; Varma, S.; Tripathi, A. K.; Bharadwaj, S. R.; Tyagi, A. K. J. Phys. Chem. C 2008, 112, 19102.
10 Jing, L.; Xin, B.; Yuan, F.; Xue, L.; Wang, B.; Fu, H. J. Phys. Chem. B 2006, 110, 17860.
11 Soni, S. S.; Henderson, M. J.; Bardeau, J. F.; Gibaud, A. Adv. Mater. 2008, 20, 1493.
12 Huang, D.-G.; Liao, S.-J.; Dang, Z. Acta Chim. Sinica 2006,64, 1805 (in Chinese). (黄冬根, 廖世军, 党志, 化学学报, 2006, 64, 1805.)
13 Chen, D.; Jiang, Z.; Geng, J.; Wang, Q.; Yang, D. Ind. Eng.Chem. Res. 2007, 46, 2741.
14 Long, H.-J.; Meng, Q.-J.; Yuan, J.; Yang, W.-S.; Cao, Y.-A. Acta Chim. Sinica 2008, 66, 657 (in Chinese). (龙绘锦, 孟庆巨, 元晶, 杨文胜, 曹亚安, 化学学报,2008, 66, 657.)
15 Chang, S.; Doong, R. J. Phys. Chem. B 2006, 110, 20808.
16 Wang, Y.; Liu, S.; Lüb, M.; Wang, S.; Gu, F.; Gai, X.; Cui, X.; Pan, J. J. Mol. Catal. A 2004, (2), 137.
17 Venkatachalam, N.; Palanichamy, M.; Arabindoo, B.; Murugesan, V. J. Mol. Catal. A 2007, 266, 158.
18 Lukac, J.; Klementova, M.; Bezdicka, P.; Bakardjieva, S.;Subrt, J.; Szatmary, L.; Bastl, Z.; Jirkovsky, J. Appl. Catal. B 2007, 74, 83.
19 Gao, B.; Ma, Y.; Cao, Y.; Yang, W.; Yao, J. J. Phys. Chem. B 2006, 110, 14391.
20 Lukac, J.; Klementova, M.; Bezdicka, P.; Bakardjieva, S.;Subrt, J.; Szatmary, L.; Gruskova, A. J. Mater. Sci. 2007, 42, 9421.
21 Yang, J.; Ferreira, J. M. F. Mater. Res. Bull. 1998, 33, 389.
22 Zou, H.; Lin, Y. S. Appl. Catal. A 2004, 265, 35.
23 Das, D.; Mishra, H. K.; Parida, K. M.; Dalai, A. K. J. Mol.Catal. A 2002, 189, 271.
24 Takano, I.; Isobe, S.; Sasaki, T. A.; Baba, Y. Appl. Surf. Sci. 1989, 37, 25.
25 Bastl, Z.; Senkevich, A. I.; Spirovova, I.; Vrtilkova, V. Surf.Interface Anal. 2002, 34, 477.
26 Cao, Y.; Meng, Q.; Yang, W.; Yao, J.; Shu, Y.; Wang, W.; Chen, G. Colloids Surf. A 2005, 262, 181.
27 Cao, Y.; Yang, W.; Chen, Y.; Du, H.; Yue, P. Appl. Surf. Sci. 2004, 236, 223.
28 Kesselman, J. M.; Weres, O.; Lewis, N. S.; Hoffmann, M.R. J. Phys. Chem. B 1997, 101, 2637.
29 Qiu, X.; Zhao, Y.; Burda, C. Adv. Mater. 2007, 19, 3995.
30 Nagaveni, K.; Hegde, M. S.; Madras, G. J. Phys. Chem. B 2004, 108, 20204.
31 Serpone, N.; Lawless, D.; Khairutdinov, R. J. Phys. Chem.1995, 99, 16655.
32 Saraf, L. V.; Patil, S. I.; Ogale, S. B.; Sainkar, S. R.; Kshirsager, S. T. Int. J. Mod. Phys. B 1998, 12, 2635.
33 Linsebigler, A. L.; Lu, G. Q.; Yates, J. T. Jr. Chem. Rev.1995, 95, 735.
34 Sclafani, A.; Herrmann, J. M. J. Phys. Chem. 1996, 100, 13655.
35 Yu, J. C.; Lin, J.; Kwok, R. W. M. J. Phys. Chem. B 1998,102, 5094.