| 钛酸盐中钠离子含量对其水热转化制备TiO_2纳米材料的影响 |
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| 引用本文： | 许元妹,方晓明,张正国.钛酸盐中钠离子含量对其水热转化制备TiO_2纳米材料的影响[J].功能材料,2010,41(2). |
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| 作者姓名： | 许元妹 方晓明 张正国 |
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| 作者单位： | 华南理工大学,化学与化工学院,广东,广州,510640 |
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| 基金项目： | 国家自然科学基金资助项目(20573038);;教育部新世纪优秀人才计划资助项目(NCET-07-0312) |
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| 摘 要： | 采用水热法制备了单晶TiO2纳米材料。用X射线衍射仪和透射电子显微镜对产物的晶相组成和形貌进行了表征。考查了钛酸盐中钠离子含量对其水热转化所得TiO2产物的相组成、形貌和尺寸的影响。当pH值为1,含有钠离子时,得到的是以菱形为主的直径为10nm左右的单晶锐钛矿纳米颗粒,不含钠离子时,得到的产物以单晶锐钛矿纳米颗粒为主,同时含有少量单晶金红石纳米棒。当pH值为4,含有钠离子时,得到的是具有高长径比的单晶锐钛矿纳米棒,宽为60nm左右,长为300～500nm左右,不含钠离子时,得到的是尺寸为20nm×60nm的短纳米棒。同时,探讨了钛酸盐中钠离子的影响机理。
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| 关 键 词： | TiO2纳米材料 单晶 钛酸盐纳米管 水热转化 |
The effect of the sodium content on the hydrothermal transformation of titanate nanotubes to prepared TiO_2 nanomaterials |
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| XU Yuan-mei,FANG Xiao-ming,ZHANG Zheng-guo.The effect of the sodium content on the hydrothermal transformation of titanate nanotubes to prepared TiO_2 nanomaterials[J].Journal of Functional Materials,2010,41(2). |
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| Authors: | XU Yuan-mei FANG Xiao-ming ZHANG Zheng-guo |
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| Affiliation: | School of Chemistry and Chemical Engineering;South China University of Technology;Guangzhou 510640;China |
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| Abstract: | Single-crystalline TiO_2 nanomaterials were synthesized by hydrothermal method and characterized by XRD,TEM and HRTEM.The effects of the sodium content of titanate nanotubes on the phase composition,morphology and size of the obtained TiO_2 nanomaterials were investigated.At pH of 1,single-crystalline anatase nanoparticles with rhombic shape were obtained by hydrothermal transformation of titanate nanotubes with sodium content of 7.34%,whereas single-crystalline anatase nanoparticles in great majority and r... |
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| Keywords: | TiO_2 nanomaterials single-crystalline titanate nanotube hydrothermal transformation |
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