| 钛酸钡纳米线的两步水热法制备及结构表征 |
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| 引用本文：朱敏,熊维,李冠,徐海萍,王静荣,杨丹丹.钛酸钡纳米线的两步水热法制备及结构表征[J].上海第二工业大学(中文版),2022,39(2):118-127 |
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| 作者 | 单位 | | 朱敏 | 1. 上海第二工业大学能源与材料学院, 上海201209
| | 熊维 | 3. 上海睿莫环保新材料有限公司, 上海200120 | | 李冠 | 1. 上海第二工业大学能源与材料学院, 上海201209
| | 徐海萍 | 1. 上海第二工业大学能源与材料学院, 上海201209
2. 上海先进热功能材料工程技术研究中心, 上海
201209
技术研究中心, 上海201209
| | 王静荣 | 1. 上海第二工业大学能源与材料学院, 上海201209
2. 上海先进热功能材料工程技术研究中心, 上海
201209
技术研究中心, 上海201209
| | 杨丹丹 | 1. 上海第二工业大学能源与材料学院, 上海201209
2. 上海先进热功能材料工程技术研究中心, 上海
201209
技术研究中心, 上海201209
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| 基金项目:上海地方院校能力建设计划项目(21010500500) 资助 |
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| 中文摘要:采用两步水热法制备钛酸钡(BaTiO3) 纳米线, 研究了第一步水热反应中NaOH 溶液浓度和反应时间对前
驱体钛酸钠(Na2Ti3O7) 纳米线相结构和微观形貌的影响, 继而研究了第二步水热反应中反应时间和反应温度对
BaTiO3 纳米线相结构和微观形貌的影响, 同时探讨了纳米线的生长机理。利用X 射线衍射仪(XRD)、扫描电子显
微镜(SEM) 及能谱仪(EDS)、透射电子显微镜(TEM) 对前驱体和BaTiO3 纳米线进行了表征。结果表明, 通过控
制水热反应时间和反应温度可以制得线形结构良好、较大长径比的BaTiO3 纳米线。在钡钛摩尔比2 : 1, 反应时间
12 h, 反应温度150 ℃的反应条件下可得到长度范围1.8~4.8 μm, 直径范围125~375 nm, 长径比范围4.8~38.4 的
BaTiO3 纳米线。 |
| 中文关键词:两步水热法 钛酸钡纳米线 长径比 |
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| Two-Step Hydrothermal Preparation and Structural Characterization of Barium Titanate Nanowires |
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| Abstract:Barium titanate (BaTiO3) nanowires were prepared by a two-step hydrothermal method. The effects of NaOH solution
concentration and reaction time in the first hydrothermal reaction on the phase structure and microscopic morphology of the precursor
sodium titanate (Na2Ti3O7) nanowires were investigated, and then the effect of reaction time and reaction temperature on the phase structure and microscopic morphology of BaTiO3 nanowires were studied in the second hydrothermal reaction. The growth mechanism of nanowires was also discussed. The precursors and BaTiO3 nanowires were characterized by X-ray diffractometer (XRD), scanning electron microscope (SEM), energy dispersive spectroscopy (EDS) and transmission electron microscope (TEM). The results show that BaTiO3 nanowires with good linear structure and large aspect ratio can be prepared by controlling the hydrothermal reaction time and reaction temperature. When the molar ratio of Ba to Ti is 2 : 1, the reaction time is 12 h, and the reaction temperature is 150 ℃, BaTiO3 nanowires are obtained with lengths ranging from 1.8 to 4.8 μm, diameters ranging from 125 to 375 nm, and aspect ratios ranging from
4.8 to 38.4. |
| keywords:two-step hydrothermal reaction barium titanate nanowires aspect ratio |
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