| 纤蛇纹石的水热生长机制研究 |
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| 引用本文： | 马国华,彭同江,李明.纤蛇纹石的水热生长机制研究[J].人工晶体学报,2009,38(5). |
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| 作者姓名： | 马国华 彭同江 李明 |
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| 作者单位： | 西南科技大学分析测试中心,绵阳,621010 |
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| 基金项目： | 国家自然科学基金(No.40372030) |
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| 摘 要： | 以氧化镁和二氧化硅为原料,采用水热法在不同反应时间下合成了一系列纤蛇纹石纳米管。利用X-射线衍射(XRD)、红外光谱(IR)、扫描电镜(SEM)、高分辨透射电镜(TEM)等手段研究了纤蛇纹石晶体生长和晶体结构随反应时间的变化过程。X-射线衍射和红外光谱分析表明:随着反应时间的增加所得到的纤蛇纹石样品结晶逐渐完善、卷曲程度逐渐增大;电镜分析表明:获得的纳米管的外径和内径分别为15～40nm和6～9nm,长度为50～300nm,出现了双层管式结构。根据实验结果,结合负离子多面体配位生长理论对纤蛇纹石的生长机理研究表明,纤蛇纹石是由片状逐渐卷曲成管状的。
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| 关 键 词： | 水热反应 纤蛇纹石 纳米管 |
Study on Mechanism of Forming Chrysotile Nanotubes under Hydrothermal Conditions |
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| MA Guo-hua,PENG Tong-jiang,LI Ming.Study on Mechanism of Forming Chrysotile Nanotubes under Hydrothermal Conditions[J].Journal of Synthetic Crystals,2009,38(5). |
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| Authors: | MA Guo-hua PENG Tong-jiang LI Ming |
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| Institution: | Analytical and Testing Center;Southwest University of Science and Technology;Mianyang 621010;China |
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| Abstract: | A series of chrysotile nanotubes have been synthesized by hydrothermal method using MgO and SiO2 as raw materials. The samples for different reactive time were characterized by Powder X-ray diffraction(XRD),scanning electron microscopy(SEM),high resolution transmission electron microscopy(HRTEM),infrared spectroscopy(IR). The XRD analysis indicated that the level of layers-curving increase gradually along with longer reactive time.The decreasing trend on the degree of chrysotile crystallinity is revealed by... |
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| Keywords: | hydrothermal reaction chrysotile nanotube |
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