| 微波水热法合成硅酸钇纳米晶 |
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| 引用本文： | 许斌生,曹丽云,黄剑锋,王灵灵,夏昌奎. 微波水热法合成硅酸钇纳米晶[J]. 人工晶体学报, 2009, 38(6): 1329-1332 |
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| 作者姓名： | 许斌生 曹丽云 黄剑锋 王灵灵 夏昌奎 |
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| 作者单位： | 陕西科技大学教育部轻化工助剂化学与技术重点实验室,西安,710021;陕西科技大学教育部轻化工助剂化学与技术重点实验室,西安,710021;陕西科技大学教育部轻化工助剂化学与技术重点实验室,西安,710021;陕西科技大学教育部轻化工助剂化学与技术重点实验室,西安,710021;陕西科技大学教育部轻化工助剂化学与技术重点实验室,西安,710021 |
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| 基金项目： | 国家自然科学基金，陕西省自然科学基金资助项目，陕西科技大学研究生创新基金 |
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| 摘 要： | 以硝酸钇、硅酸钠和氢氧化钠为主要原料,采用一种新方法-微波水热法可控合成了硅酸钇纳米晶.研究了起始溶液配比,合成温度及退火温度对硅酸钇的影响.采用X射线衍射仪(XRD)和透射电子显微镜(TEM)对粉体进行了表征.结果表明:随着合成温度的升高,Y_2SiO_5的含量增加.低温退火处理有助于提高硅酸钇微晶的结晶程度.选不同配比的溶液体系,经微波水热150 ℃作用10 min后,得到的前驱体于900 ℃下保温2 h,最终可获颗粒尺寸分别为400~600 nm、200~400 nm和400~600 nm的Y_2SiO_5、Y_(4.67)(SiO_4)_3O和Y_2Si_2O_7三种晶型的纳米晶,且其晶型最佳.
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| 关 键 词： | 硅酸钇 微波水热法 纳米晶 |
Synthesis of Yttrium Silicates Nanocrystallites by Microwave-hydrothermal Method |
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| XU Bin-sheng,CAO Li-yun,HUANG Jian-feng,WANG Ling-ling,XIA Chang-kui. Synthesis of Yttrium Silicates Nanocrystallites by Microwave-hydrothermal Method[J]. Journal of Synthetic Crystals, 2009, 38(6): 1329-1332 |
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| Authors: | XU Bin-sheng CAO Li-yun HUANG Jian-feng WANG Ling-ling XIA Chang-kui |
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| Abstract: | Yttrium silicate nanocrystallites were synthesized by the microwave-hydrotherma1 method using Y(NO_3)_3·6H_2O, Na_2SiO_3 and NaOH as raw materials. The influence of solution composition, synthesis temperature and annealing temperature on the phase and microstructure of yttrium silicates crystallites were investigated. X-ray diffraction (XRD) and transmission electron microscopy (TEM) were used to characterize the powders. The results showed that Y_2SiO_5 content increase as the synthesis temperature increasing. The increase of annealing temperature is benefit for the growth of yttrium silicates crystallite. Y_2SiO_5, Y_(4.67)(SiO_4)_3O and Y_2Si_2O_7 crystallites with the particles size of 400-600 nm、200-400 nm and 400-600 nm can be achieved, using different initial solution composition under microwave hydrothermal at 150 ℃ for 10 min and annealing at 900 ℃ for 2 h,and the crystal is best. |
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| Keywords: | yttrium silicates microwave-hydrothermal method nanocrystallite |
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