采用硬脂酸法制备了不同掺杂量的ＴｉＯ２纳米晶．通过ＦＴＩＲ、ＸＲＤ和ＴＥＭ等实验手段对所得纳米ＴｉO2进行分析和表征，并对反应历程进行了初步探讨．实验结果表明，利用硬脂酸法，金红石型ＴｉＯ２能在５００℃获得，掺杂Ｎａ＋和Ｋ＋后则得到锐钛矿型ＴｉＯ２，且随着掺杂量的增加，ＴｉＯ２的粒径减小．
Nanocrystalline TiO2 powders doped with Na+ and K+ were prepared by stearic acid sol-gel method. The resulting nanocrystallines were characterized by FTIR, XRD and TEM. The reaction mechanism was also studied. The experimental results showed that rutile TiO2 can be obtained at 500℃ by using stearic acid sol-gel method, while anatase TiO2 were obtained from doping with Na+ and K+. As a result of doping, the crystalline size decreased with increasing the amount of dopants.
参考文献
| [1] | Haro-Poniatowski E, Rodriguez-Talavera R, de la Cruz heredia M, et al. J. Mater. Res., 1994, 9(8): 2102--2108. [2] Birkefeld L D, Azad A M, Akbar S A. J. Am. Ceram. Soc., 1992, 75(11): 2964--2968. [3] Keiichi T, Mario F V C, Teruaki H A. Chemical Physics Letters, 1991, 187(1,2): 73--76. [4] 张青红，高濂，郭景坤(ZHANG Qing-Hong, et al). 无机材料学报(Journal of Inorganic materials?), 2000, 15(1): 21--25. [5] Watanabe T, Kitamura A, Fujishima A, et al. In: Ollis D F, Al-Ekabi H eds. Photocatalytic Purification and Treatment of Water and Air. New York: Elsevier, 1993, 747 [6] 周根陶, 刘双怀, 彭定坤(ZHOU Gen-Tao, et al). 化学物理学报(Chinese J. Chem. Phys.), 1996, 9(1): 54--60. [7] DING Xing-Zhao, LIU Lin, MA Xue-Ming, et al. J. Mater. Sci. Lett., 1994, 13: 462--464. [8] ZHANG Zhi-Bo, WANG Chen-Chi, Jackie Y Y, et al. J. Phys. Chem. B, 1998, 102: 10871--10878. [9] Choi W Y, Andreas T, Michael R H. Angew. Chem. Int. Ed. Engl., 1994, 33(10): 1091--1092. [10] Choi W Y, Andreas T, Michael R H. J. Phys. Chem., 1994, 98: 13669--13679. [11] XIONG Gang, WANG Xin, et al. J. Mater. Sci., 2000, 35: 931--935. [12] WANG Xiao-Hui, LI Dan, WANG Xin, et al. J. Alloys and compounds, 1996, 237(1,2): 45--49. [13] XIONG Gang, ZHI Zheng-Liang, WANG Xin, et al. J. Mater. Sci. Lett., 1997, 16: 1064--1068. [14] Murakame Y, Matsumoto T, Takasu Y, J. Phys. Chem. B, 1999, 103: 1836--1840. [15] Ozawa M, Kimura M. J. Mater. Sci. Lett., 1990, 9: 291--299. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%