Hydrated surface structure and its impacts on the stabilization of t-ZrO2
文献类型：期刊论文
| 作者 | H. Wang ; G. S. Li ; Y. F. Xue ; L. P. Li |
| 刊名 | Journal of Solid State Chemistry
 |
| 出版日期 | 2007-10 |
| 卷号 | 180期号:10页码:2790-2797 |
| 关键词 | tetragonal ZrO2 hydrothermal process hydrated surface structure hydrothermal conditions nanocrystalline powders phase-transformation zirconia particles low-temperatures zro2 crystallization transitions raman gel |
| ISSN号 | 0022-4596 |
| 中文摘要 | We first optimized the preparation conditions to 3.6-6.0 nm ZrO2 in a Pure tetragonal structure (t-phase). All samples were characterized by X-ray diffraction, high-resolution transmission electron microscope, thermal analysis, Raman spectra, and infrared spectra. It is found that the surfaces of t-ZrO2 nanostructures were terminated by an amorphous hydration layer co-existing with small amounts of carbonate molecules. With the removal of hydrated Surface layers under hydrothermal conditions at T > 150 degrees C. t-ZrO2 nanostructures became thermodynamically unstable, which partially transformed into monoclinic ZrO2 (m-phase). Such a transformation occurs initially at Surface regions and then develops into the bulk. High-temperature annealing in air could also remove the hydrated surface lavers. which is however followed by a gradual transformation of t-ZrO2 into m-ZrO2 in both bulk and surface regions. These observations are explained in terms of the difference in surface free energies of m-ZrO2 and t-ZrO2 upon H2O adsorption. (C) 2007 Elsevier Inc. All rights reserved. |
| 语种 | 英语 |
| 公开日期 | 2013-04-01 |
| 源URL | [http://ir.fjirsm.ac.cn/handle/350002/6648]  |
| 专题 | 福建物质结构研究所_中科院福建物质结构研究所_期刊论文 |
| 推荐引用方式 GB/T 7714 | H. Wang,G. S. Li,Y. F. Xue,et al. Hydrated surface structure and its impacts on the stabilization of t-ZrO2[J]. Journal of Solid State Chemistry,2007,180(10):2790-2797. |
| APA | H. Wang,G. S. Li,Y. F. Xue,&L. P. Li.(2007).Hydrated surface structure and its impacts on the stabilization of t-ZrO2.Journal of Solid State Chemistry,180(10),2790-2797. |
| MLA | H. Wang,et al."Hydrated surface structure and its impacts on the stabilization of t-ZrO2".Journal of Solid State Chemistry 180.10(2007):2790-2797. |
入库方式： OAI收割
来源：福建物质结构研究所
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