| 酸性环境下一维纳米AlOOH聚集体形态及“生长基元”模型 |
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| 引用本文： | 郝保红,刘东阳,田庄.酸性环境下一维纳米AlOOH聚集体形态及“生长基元”模型[J].北京石油化工学院学报,2011(2):44-48. |
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| 作者姓名： | 郝保红 刘东阳 田庄 |
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| 作者单位： | 北京石油化工学院机械工程系; |
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| 摘 要： | 晶体生长形态是晶体生长过程中定向发展的结果,除与晶体本身的结构特点有关以外,还与生长环境有关。分析了酸性水热环境下AlOOH产物形貌特征,从原子"聚集体"层面揭示了外界环境pH对AlOOH结晶过程及最终形貌的影响机理。初步构建了一维纳米AlOOH的"生长基元"运动模型。从"生长基元运动"的角度讨论了纳米晶体的结晶过程,指出了pH=3和pH=5环境条件下纳米AlOOH的Al3+三聚体Al3(OH)4(OH2)9]5+?Al3(OH)5(OH2)8]4+?Al3(OH)6(OH2)7]3+的特点,用实验样品形貌直接验证了所建模型的正确性。得出"不同的pH决定不同的生长基元,不同的生长基元决定不同的侨联运动过程,并最终决定晶体一维定向生长成单锥晶须或双锥棒状形貌"的结论。
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| 关 键 词： | 一维纳米 AlOOH 酸性环境 原子聚集体 生长基元 |
Aggregates Form of One-dimensional Nano AlOOH and the Growth Unit Model in the Acidic Environment |
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| Hao Baohong Liu Dongyang Tian Zhuang.Aggregates Form of One-dimensional Nano AlOOH and the Growth Unit Model in the Acidic Environment[J].Journal of Beijing Institute of Petro-Chemical Technology,2011(2):44-48. |
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| Authors: | Hao Baohong Liu Dongyang Tian Zhuang |
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| Affiliation: | Hao Baohong Liu Dongyang Tian Zhuang(Department of Mechanical Engineering,Beijing Institute of Petro-chemical Technology,Beijng 102617,China) |
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| Abstract: | Crystal growth patterns in the process of crystal growth are the result of the development orientation,in addition to its crystal structure and characteristics of the relevant,with growth environment.The crystallization process of nano-crystals was discussed in terms of the growth unit movement and one-dimensional nano growth unit movement model was established.The mechanisms of effect of different hydrothermal environment system on heteromorphic AlOOH's crystallization process and the final morphology are... |
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| Keywords: | one-dimensional nano ALOOH acidic environment atomic aggregate |
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