| 六方相NaDyF4微纳米晶的水热合成 |
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| 引用本文： | 周健,倪亚茹,陆春华. 六方相NaDyF4微纳米晶的水热合成[J]. 南京工业大学学报(自然科学版), 2012, 34(2): 53-57 |
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| 作者姓名： | 周健 倪亚茹 陆春华 |
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| 作者单位： | 南京工业大学材料科学与工程学院,材料化学工程国家重点实验室,江苏南京210009 |
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| 基金项目： | 国家自然科学基金资助项目(20901040/B0111);江苏省高校自然科学研究重大资助项目(10KJA430016);江苏省自然科学基金创新学者攀登计划资助项目(SBK200910148);江苏省自然科学基金资助项目(BK2010553) |
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| 摘 要： | 采用水热法合成六方相NaDyF4微纳米晶,考察反应温度、反应时间、F-和Dy3+的摩尔比等对产物晶型和形貌的影响.采用X线衍射仪(XRD)和扫描电子显微镜(SEM)对试样进行表征.结果表明:在水-乙醇-油酸体系中,固定水、乙醇和油酸的体积分别为10、12、6mL,NaOH为0.5g,调整F-和Dy3+的摩尔比值为4、5、7和10,220℃反应72 h,可以得到片状、短棒状、六棱柱状和长棒状等纯六方相NaDyF4微纳米晶.提出了六方相NaDyF4微纳米晶可能的生长机制.
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| 关 键 词： | 水热法 稀土镝 NaDyF4微纳米晶 |
Hydrothermal synthesis of hexagonal NaDyF4 micro-nanocrystals |
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| ZHOU Jian , NI Yaru , LU Chunhua. Hydrothermal synthesis of hexagonal NaDyF4 micro-nanocrystals[J]. Journal of Nanjing University of Technology, 2012, 34(2): 53-57 |
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| Authors: | ZHOU Jian NI Yaru LU Chunhua |
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| Affiliation: | (State Key Laboratory of Materials-Oriented Chemical Engineering,College of Materials Science and Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | Hexagonal NaDyF4 micro-nanocrystals was synthesized by hydrothermal method.The effects of the reaction temperature,reaction time and molar ratio of F-to Dy3+ on the crystal structure and morphology of product were investigated.The sample was characterized by X-ray diffraction(XRD) and scanning electron microscopy(SEM).Results showed that pure hexagonal phase NaDyF4 micro-nanocrystals with the morphologies,such as micro-nanoplates,short micro-nanorods,short micro-nanoprisms,and long micro-nanorods,could be obtained in the water-ethanol-oleic acid reaction system by changing F-to Dy3+molar ratio of 4,5,7 and 10,when other synthetic parameters were set as reaction time of 72 h,reaction temperature of 220 ℃,water-ethanol-oleic acid of 10,12 and 6 mL and NaOH of 0.5 g.The possible growth mechanism of hexagonal NaDyF4 micro-nanocrystals was proposed. |
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| Keywords: | hydrothermal rare earth dysprosium NaDyF4 micro-nanocrystals |
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