|
|||||
|
|
| 纳米KNbO3粉体的水热合成及表征 | |
| 引用本文： | 钟志成,张端明,韩祥云,屈少华,谢志远.纳米KNbO3粉体的水热合成及表征[J].襄樊学院学报,2005,26(5):17-19. |
| 作者姓名： | 钟志成 张端明 韩祥云 屈少华 谢志远 |
| 作者单位： | 1. 襄樊学院,物理学系,湖北,襄樊,441053;华中科技大学,物理学系,湖北,武汉,430074 2. 华中科技大学,物理学系,湖北,武汉,430074 3. 襄樊学院,物理学系,湖北,襄樊,441053 |
| 基金项目： | 国家自然科学基金（50272022）和湖北省教育厅重大科研项目（2000B5002） |
| 摘 要： | 给出了一个在Nb-K-H2O三元体系中水热合成KNbO3的新的工艺条件；讨论了水热反应温度、溶液初始浓度及反应时间对合成产物的组分及形态等的影响；采用水热合成方法，在KOH浓度3M以上、反应温度为250℃、反应时间24h时，成功合成了钙钛矿结构KNbO3纳米陶瓷粉体；X射线衍射（XRD）、透射扫描电子（TEM）分析表明，水热合成的KNbO3晶粒发育完整，平均粒径为40nm；FT-IR、FT-Raman光谱等测试结果表明，纳米尺度KNbO3晶粒的Nb-O特征振动吸收带和拉曼位移分别出现了宽化和蓝移现象． |
| 关 键 词： | 水热合成 铌酸钾 粉体 表征 |
| 文章编号： | 1009-2854(2005)05-0017-03 |
| 收稿时间： | 04 12 2005 12:00AM |
| 修稿时间： | 2005年4月12日 |
Hydrothermal synthesis and characterization of nano-crystalline particles of potassium niobate |
|
| Zhong Zhi-cheng,Zhang Duan-ming,Han Xiang-yun,Qu Shao-hua,Xie Zhi-yuan.Hydrothermal synthesis and characterization of nano-crystalline particles of potassium niobate[J].Journal of Xiangfan University,2005,26(5):17-19. | |
| Authors: | Zhong Zhi-cheng Zhang Duan-ming Han Xiang-yun Qu Shao-hua Xie Zhi-yuan |
| Institution: | 1.Department of Physics, Xiangfan University, Xiangfan441053,China; 2.Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China |
| Abstract: | A new route of hydrothermal synthesis nano-crystalline particles of potassium niobate has been reported.The optimum conditions for hydrothermal synthesis of phase-pure potassium niobates have been investigated.The factors including concentration,temperature,and pH values of the reagent have been discussed.Our results of experiment have confirmed the prediction and nano-particle of KNbO3 synthesized successfully under the reaction conditions above.The patterns of X-ray diffraction(XRD) and transmission electric microscope(TEM)image have showed the homogenous KN particle with morphology synthesized,the results of Fourier transform infrared(FTIR) and Raman spectrums have been presented as well. |
| Keywords: | Hydrothermal synthesis KNbO3 Powder Characterization |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |