[2] [2] Neeraj S, Kijina N, Cheetham A K. Chem. Phys. Lett., 2004, 387: 2.

[3] [3] Wang J G, Jing X P, Yan C H, et al. Journal of the Electrochemical Society, 2005, 152(3): G186.

[4] [4] Yang P, Yao G Q, Lin J H. Inorganic Chemistry Communications, 2004, 7: 389.

[5] [5] Hu Y S, Zhuang W D, Ye H Q, et al. Journal of Alloys and Compounds, 2005, 390: 226.

[6] [6] Li X, Yang Z P, Guan L, Guo J X, et al. Journal of Alloys and Compounds, 2009, 478: 684.

[7] [7] Liu J, Lian H Z, Shi C S. Optical Materials, 2007, 29: 1591.

[8] [8] Yan S X, Zhang J H, Zhang X, et al. Journal of Physics Chemistry C, 2007, 111: 13256.

[9] [9] Rosa Ieda L V, Marques Ana Paula A, Tanaka Marcos T S, et al. Fluoresc., 2009, 19: 495.

[10] [10] Huang P S, Wei J S, Zhou L Y. Technology ＆ Development of Chemical Industry, 2009, 38(4): 1.

[11] [11] Lide D(Editor-in-Chief). The CRC Handbook of Chemistry and Physics on CDROM, CRC Press, Boca Raton, FL, Version 2002. 12.