| 超声场对醇/水反应体系制备纳米CeO2粉体影响研究 |
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| 引用本文： | 陈杨,陈志刚,李霞章,陈爱莲.超声场对醇/水反应体系制备纳米CeO2粉体影响研究[J].化学工程,2007,35(4):57-60. |
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| 作者姓名： | 陈杨 陈志刚 李霞章 陈爱莲 |
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| 作者单位： | 江苏工业学院,材料系,江苏,常州,213164;江苏大学,材料学院,江苏,镇江,212013 |
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| 基金项目： | 江苏省自然科学基金
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江苏省高新技术项目 |
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| 摘 要： | 在超声辐射条件下,以Ce(NO3)3.6H2O和六亚甲基四胺(HMT)为原料,使用醇/水反应体系制备了纳米CeO2粉体。采用透射电子显微镜(TEM)、平衡发射极晶体管(BET)对制备的纳米CeO2粉体进行了表征。研究了超声功率以及醇/水反应体系对纳米CeO2粉体粒径和团聚情况的影响,并探讨了其作用机理。结果表明,使用醇/水反应体系以及适当的超声辐射均有利于制备出粒径更小、分散性更好的纳米CeO2粉体,但过高的超声功率则易导致颗粒间的团聚;而且超声辐射能够显著加快反应速度。制备出的CeO2粉体的平均粒径小于10 nm,粒度分布窄,单分散性好。
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| 关 键 词： | 纳米CeO2 超声辐射 超声功率 醇水反应体系 |
| 文章编号： | 1005-9954（2007）04-0057-04 |
Effect of ultrasonic radiation on preparation of nano-sized CeO2 powder in alcohol/water reaction system |
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| CHEN Yang,CHEN Zhi-gang,LI Xia-zhang,CHEN Ai-lian.Effect of ultrasonic radiation on preparation of nano-sized CeO2 powder in alcohol/water reaction system[J].Chemical Engineering,2007,35(4):57-60. |
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| Authors: | CHEN Yang CHEN Zhi-gang LI Xia-zhang CHEN Ai-lian |
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| Affiliation: | 1. Department of Material and Engineering, Jiangsu Polytechnic University, Changzhou 213164, Jiangsu Province, China;2. School of Material and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China |
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| Abstract: | Nano-powder of CeO2 was prepared in alcohol/water reaction system under ultrasonic radiation using Ce(NO3)3·6H2O and HMT as raw materials.The prepared nano-sized powder was characterized by means of TEM and BET.The effects of alcohol/water reaction system and ultrasonic power on the size and agglomeration of the as-prepared powder were discussed.The results indicate that alcohol/water reaction system and appropriate ultrasonic radiation are advantaged to prepare nano-CeO2 powder with smaller size and better disperse performance.Ultrasonic radiation can expedite the reaction rate and refine CeO2 nano-particle effectively,but too high ultrasonic power may cause further agglomeration of particles.The CeO2 powder prepared is featured by particle size under 10 nm,narrow distribution and well dispersed. |
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| Keywords: | nano-sized CeO2 ultrasonic radiation ultrasonic power alcohol/ water reaction system |
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