| 光谱学与光谱分析 |
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| Synthesis, Spectral Analysis and Photocatalysis of Ag/K4Nb6O17 Heterojunction Catalysts |
| ZHANG Feng-li1, CAO Yan-ning2, YING Song1, CHEN Rong1, ZHANG Han-hui2, ZHENG Qi2* |
1. China National Chemical Industrial Gas Quality Supervision and Inspection Center, Fuzhou 350025, China
2. National Engineering Research Center of Chemical Fertilizer Catalyst at Fuzhou University, Fuzhou 350002, China |
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Abstract K4Nb6O17 photocatalyst was successfully synthesized by low-temperature hydrothermal method with layer structure. Considering that a large number of hydroxyl (Nb—OH) and oxygen species (NbO, Nb—O-) exist on the surface of K4Nb6O17 synthesized by hydrothermal method, Ag(en)+2 precursors were employed to synthesize Ag/K4Nb6O17 heterostructure photo-catalysts with highly dispersed Ag. Photocatalytic performance evaluation results show that the photodegradation rate of MO for K4Nb6O17 was remarkably improved when a small amont of Ag was loaded. The best loading dose of Ag is 0.5 at%. Based on various characterizations results of XRD，FTIR，UV-Vis DRS，XRF and TEM, the photocatalytic mechanism of Ag/K4Nb6O17 heterostructure catalysts was illuminated in detail and the conclusions were drawn as follows: (1) K4Nb6O17 nanocrystals serve as electron and hole sources for degradation of an organic dye; (2) Ag nanoparticles on the surface of K4Nb6O17 nanocrystals act as a sink for the electrons, promote interfacial charge-transfer kinetics between the metal and semiconductor, improve the separation of photogenerated electron-hole pairs, and thus enhance the photocatalytic activity of Ag/K4Nb6O17 photocatalyst.
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Received: 2009-10-26
Accepted: 2010-01-28
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Corresponding Authors:
ZHENG Qi
E-mail: qizheng2005@gmail.com
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[1] Kobayashi Y, Hata H, Salama M, et al. Nano Letters, 2007, 7(7): 2142.
[2] Hayashi H, Hakuta Y, Kurata Y. J. Mater. Chem., 2004, 14(13): 2046.
[3] Domen K, Yoshimura J, Sekine T, et al. Catal. Lett., 1990, 4(4-6): 339.
[4] Sayama K, Tanaka A, Domen K, et al. J. Catal., 1990, 124(2): 541.
[5] Matos J, Laine J, Herrmann J M. Appl. Catal. B-Environ., 1998, 18(3-4): 281.
[6] WEN Lu(闻 辂). Infrared Spectroscopy of Mineral(矿物红外光谱学). Chongqing: Chongqing University Press(重庆：重庆大学出版社)，1989. 88.
[7] Compton O C, Osterloh F E. J. Phys. Chem. C, 2009, 113(1): 479.
[8] ZHANG Feng-li, ZHENG Yuan-hui, ZHAN Ying-ying, et al(张凤利，郑远辉，詹瑛瑛，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2009, 29(8): 2166.
[9] Yatmaz H C, Akyol A. Ind. Eng. Chem. Res., 2004, 43(19): 6035.
[10] Ryu J, Choi W. Environ. Sci. Technol., 2004, 38(10): 2928.
[11] Zhang F L, Zheng Y H, Cao Y N, et al. J. Mater. Chem., 2009, 19(18): 2771.
[12] Zheng Y H, Zheng L R, Zhan Y Y, et al. Inorg. Chem., 2007, 46(17): 6980.
[13] Zheng Y H, Chen C Q, Zhan Y Y, et al. J. Phys. Chem. C, 2008, 112(29): 10773.
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