| 水热法可控制备铋铁系化合物材料 |
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| 引用本文： | 李 波,孙华君,陈 文,张成勇,王一擘,沈 杰,周 静,刘晓芳. 水热法可控制备铋铁系化合物材料[J]. 无机化学学报, 2009, 25(10): 1848-1852 |
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| 作者姓名： | 李 波 孙华君 陈 文 张成勇 王一擘 沈 杰 周 静 刘晓芳 |
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| 作者单位： | 1. 武汉理工大学材料科学与工程学院,武汉,430070
2. 武汉理工大学化学与工程学院,武汉,430070 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 本文以Fe(NO3)3·9H2O和Bi(NO3)3·5H2O为反应原料，以NaOH为矿化剂, 利用水热方法制备出几种纯相的铋铁系化合物材料，通过调节NaOH的浓度范围可以很容易的控制铋铁系化合物的物相。在NaOH浓度为0.1~0.4 mol·L-1区间，可以得到立方相的软铋矿Bi25FeO40，当NaOH浓度提高到0.8~2.0 mol·L-1区间，可以得到六方钙钛矿结构的BiFeO3，再提高NaOH浓度至8.0 mol·L-1以上可以得到正交相的Bi2Fe4O9，在NaOH浓度为12.0 mol·L-1时可以获得纳米片状Bi2Fe4O9。同时探讨了铋铁系化合物的生长机理。
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| 关 键 词： | 铋铁系化合物； 可控水热合成； 矿化剂； 生长机理 |
Tunable Hydrothermal Synthesis of Bismuth Ferrites |
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| LI Bo,SUN Hua-Jun,CHEN Wen,ZHANG Cheng-Yong,WANG Yi-Bo,SHEN Jie,ZHOU Jing and LIU Xiao-Fang. Tunable Hydrothermal Synthesis of Bismuth Ferrites[J]. Chinese Journal of Inorganic Chemistry, 2009, 25(10): 1848-1852 |
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| Authors: | LI Bo SUN Hua-Jun CHEN Wen ZHANG Cheng-Yong WANG Yi-Bo SHEN Jie ZHOU Jing LIU Xiao-Fang |
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| Affiliation: | School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070,School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070,School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070,School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070,School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070,School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070,School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070 and School of Chemical Science and Engineering, Wuhan University of Technology, Wuhan 430070 |
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| Abstract: | Various purity-phase of bismuth ferrites can be fabricated with Fe(NO_3)_3·9H_2O and Bi(NO_3)_3·5H_2O using the hydrothermal method, while NaOH is used as pH adjuster and mineralizer. The phase of bismuth ferrites is controllable easily by adjusting the concentration range of the NaOH solution. The sillenites Bi_(25)FeO_(40) can be synthesized when 0.1 mol·L~(-1)≤C_(NaOH)≤0.4 mol·L~(-1). The perovskite bismuth ferrites BiFeO_3 can be obtained when the NaOH concentration was from 0.8 to 2.0 mol·L~(-1). The orthorhombic Bi_(25)FeO_(40) can be synthesized when C_(NaOH)≥ 8.0 mol·L~(-1). The highly oriented Bi_2Fe_4O_9 nanosheets can be synthesized using the NaOH concentration of 12.0 mol· L~(-1). At the same time, the growth mechanism of the bismuth ferrites was also discussed. |
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| Keywords: | bismuth ferrites tunable hydrothermal synthesis mineralizer growth mechanism |
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