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系统的合成和单晶兰化正酸盐纳米线的表征
Yue-Ping Fang1, An-Wu Xu, Rui-Qi Song
1School of Chemistry and Chemical Engineering, Zhongshan University, Guangzhou, 510275, China.
Journal of the American Chemical Society
|December 18, 2003
概括
一种简单的热水制方法合成了具有不同结构和形态的兰化石正酸盐晶体. 兰化物离子半径决定了六角或四角相的形成,影响了晶体形状和特性.
科学领域:
- 材料科学 材料科学 材料科学
- 无机化学 无机化学
- 纳米技术纳米技术
背景情况:
- 兰化石正形酸盐 (LnPO4) 呈现出多样化的晶体结构和形态.
- 控制这些属性对于定制它们的应用至关重要.
研究的目的:
- 开发一种系统的热水制法,用于合成兰化石正酸盐晶体.
- 为了研究胺离子半径对晶相和形态学的影响.
- 探索这些材料在化后的结构和形态稳定性.
主要方法:
- 水热合成. 水热合成.
- 使用X射线衍射 (XRD),场发射扫描电子显微镜 (FESEM),传输电子显微镜 (TEM),电子衍射,红外吸收光谱,X射线光电子光谱 (XPS),光学吸收光谱和光发光谱的表征.
主要成果:
- 水热处理产生的六边形LnPO4 (La-Dy) 具有线状形态和四边形LnPO4 (Ho-Lu,Y) 具有纳米粒子形态,取决于Ln离子半径.
- 六边形LnPO4 (La-Tb) 在化后转化为单临性单石结构,保持形态,而四边形LnPO4 (Ho-Lu,Y) 则保持不变.
- 兰化纳米线 (La-Dy) 的直径为5-120nm,长度高达几微米.
结论:
- 一种简单的热水方法允许控制合成具有不同阶段和形态的兰化石正形酸盐.
- 这项研究阐明了由兰化物离子半径支配的结构形态关系.
- 这些发现提供了关于这些纳米材料的热稳定性和潜在应用的见解.
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