| 单晶菱形CeOHCO3片状物的制备及其向CeO2的热转换 |
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| 引用本文： | 张泽芳,俞 磊,刘卫丽,宋志棠.单晶菱形CeOHCO3片状物的制备及其向CeO2的热转换[J].无机化学学报,2011,27(4):759-763. |
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| 作者姓名： | 张泽芳 俞 磊 刘卫丽 宋志棠 |
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| 作者单位： | 1. 中国科学院上海微系统与信息技术研究所,信息功能材料国家重点实验室,纳米技术研究室,上海200050;中国科学院研究生院,北京100049
2. 中国科学院上海微系统与信息技术研究所,信息功能材料国家重点实验室,纳米技术研究室,上海200050 |
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| 基金项目： | 国家集成电路重大专项，上海市科委资助项目 |
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| 摘 要： | 以硝酸铈铵和尿素为反应物,γ-氨丙基三乙氧基硅烷(KH550)为助剂,通过沉淀反应制得了单晶菱形CeOHCO3片状物。然后将CeOHCO3在600℃空气气氛中灼烧获得了菱形CeO2。通过XRD和SEM对反应物中是否含有KH550助剂所得的产物进行了分析,结果发现只有含有KH550才能获得菱形CeOHCO3片状物,并且在灼烧过程中产物的形貌仍保持菱形。然后采用TEM对菱形CeOHCO3和CeO2进行了表征,结果发现CeOHCO3为单晶产物而灼烧后所得的CeO2为多晶产物。
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| 关 键 词： | CeOHCO3 CeO2 KH550 菱形 沉淀法 |
Single-Crystalline CeOHCO3 with Rhombic Morphology: Synthesis and Thermal Conversion to CeO2 |
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| ZHANG Ze-Fang,YU Lei,LIU Wei-Li and SONG Zhi-Tang.Single-Crystalline CeOHCO3 with Rhombic Morphology: Synthesis and Thermal Conversion to CeO2[J].Chinese Journal of Inorganic Chemistry,2011,27(4):759-763. |
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| Authors: | ZHANG Ze-Fang YU Lei LIU Wei-Li and SONG Zhi-Tang |
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| Institution: | State Key Laboratory of Functional Materials for Informatics, Laboratory of Nanotechnology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China; Shanghai Xinanna Electronic Technology Co., Ltd.,State Key Laboratory of Functional Materials for Informatics, Laboratory of Nanotechnology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China; Shanghai Xinanna Electronic Technology Co., Ltd.,State Key Laboratory of Functional Materials for Informatics, Laboratory of Nanotechnology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China and State Key Laboratory of Functional Materials for Informatics, Laboratory of Nanotechnology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China |
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| Abstract: | Single-crystalline CeOHCO3 rhombic micro-plates with an orthorhombic structure were synthesized by the precipitation reaction between (NH4)2Ce(NO3)6 and CO(NH)2 in the presence of 3-aminopropyltriethoxysilane (APS). Polycrystalline CeO2 rhombic micro-plates were prepared by thermal decomposition of single-crystalline CeOHCO3 rhombic micro-plates at 600 ℃ in air. CeOHCO3 and CeO2 rhombic micro-plates were characterized by XRD, filed-emission scanning electron microscopy (FESEM), TEM, and XPS. The results indicate that APS plays an important role in the preparation of single-crystalline CeOHCO3 rhombic micro-plates because the CeO2 is produced without APS. In addition, the rhombic shape of the products is not ruined apparently by the thermal conversion process from CeOHCO3 to CeO2. |
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| Keywords: | CeOHCO3 CeO2 APS rhombic precipitation reaction |
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