以硝酸铈和碳酸氢铵为原料,采用超声雾化反应法制备了纳米CeO2粉. 用红外光谱(IR)、 X射线衍射分析(XRD)和透射电子显微镜(TEM)技术,对制得的纳米CeO2纳米粒子的物相结构、形貌特征、成分等进行了表征. 结果表明,双液超声雾化法能制备出颗粒分散性好,粒度分布均匀的纳米CeO2粒子,所得CeO2粒子为萤石型结构,粒径约为3～5 nm左右. 初步探讨了用超声雾化反应法制备纳米粉的机制,认为CeO2纳米粒子的成核和长大受到液滴大小的限制,是一个液相的微区反应过程,正是液滴的微小体积保证了更小纳米粒子的形成.
参考文献
| [1] | Zhai Y Q;Zhang S Y;Pang H .Preparation,characterization and photocatalytic activity of CeO2 nanocrystalline using ammonium bicarbonate as precipitant[J].Materials Letters,2007,61:1863. |
| [2] | Kim Dong Hyun;Cha Jung Eun .A CuO-CeO2 mixed-oxide catalyst for CO clean-up by selective oxidation in hydrogen-rich mixtures[J].Catalysis Letters,2003,86:107. |
| [3] | 朱兆武,龙志奇,崔大立,张顺利,张国成.超细CeO2粉体的制备及其紫外线吸收性能[J].中国有色金属学报,2005(03):435-440. |
| [4] | Feng XD;Sayle DC;Wang ZL;Paras MS;Santora B;Sutorik AC;Sayle TXT;Yang Y;Ding Y;Wang XD .Converting ceria polyhedral nanoparticles into single-crystal nanospheres[J].Science,2006(5779):1504-1508. |
| [5] | Noriya Izu;Woosuck Shin;Norimitsu Murayama .Fast response of resistive-type oxygen gas sensors based on nano-sized ceria powder[J].Sensors and Actuators, B. Chemical,2003(1/3):449-453. |
| [6] | Zhang TS;Ma J;Chan J;Kilner JA .Grain boundary conduction of Ce0.9Gd0.1O2-delta ceramics derived from oxalate coprecipitation: effects of Fe loading and sintering temperature[J].Solid state ionics,2005(3/4):377-384. |
| [7] | Brett Daniel J L;Alan Atkinson;Denis Cumming;Ramírez-Cabrera Elvia Rudkin Robert Brandon Nigel P .Methanol as a direct fuel in intermediate temperature (500～600 ℃) solid oxide fuel cells with copper based anodes[J].Chemical Engineering Science,2005,60:5649. |
| [8] | Chen W F;Li F S;Yu J Y .Combustion synthesis and characterization of nanocrystalline CeO2-based powders via ethylene glycol-nitrate method[J].Materials Letters,2006,60:57. |
| [9] | Kenji Kaneko;Koji Inoke;Bert Freitag;Hungria Ana B Midgley Paul A Hansen Thomas W Zhang J .Ohara Satoshi Adschiri Tadafumi Structural and morphological characterization of cerium oxide nanocrystals prepared by hydrothermal synthesis[J].Nano Letters,2007,7(02):421. |
| [10] | Phonthammachai N;Rumruangwong M;Gulari E;Jamieson AM;Jitkarnka S;Wongkasemjit S .Synthesis and rheological properties of mesoporous nanocrystalline CeO2 via sol-gel process[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,2004(1/3):61-68. |
| [11] | 梅燕,韩业斌,聂祚仁.溶液的pH值对纳米CeO2晶粒形貌及形成机制的影响[J].中国稀土学报,2006(01):43-47. |
| [12] | 王健;邱新平;武增华;孙杰 .沉淀-熔盐法制备纳米CeO2粉体[J].中国稀土学报,2005,23:42. |
| [13] | 李小忠,王连军,赵铭,李健生,孙秀云.离子交换-双氧水氧化法制备纳米CeO2晶体[J].无机化学学报,2006(01):79-82. |
| [14] | Hadi Abdul;Yaacob Iskandar Idris .Novel synthesis of nanocrystalline CeO2 by mechanochemical and water-in-oil microemulsion methods[J].Materials Letters,2007,61:93. |
| [15] | 张嘉琪,谢秀荣,董迎.基于超声波雾化技术制备纳米TiO2粉体及其表征[J].天津理工大学学报,2006(02):46-49. |
| [16] | Nakamoto Kazuo.Infrared and Raman Spectra of Inorganic and Coordination Compounds[M].New York:A Wlley-Interscience Publication,1986:252. |
| [17] | 王成云,苏庆德,钱逸泰.非水溶剂水热法制备CeO2纳米粉[J].化学研究与应用,2001(04):402-405. |
| [18] | 左晓菲,沈明,马桂林.纳米CeO2的形貌控制与表征[J].中国稀土学报,2006(02):247-250. |
| [19] | 梅燕,韩业斌,聂祚仁.用尿素作沉淀剂制备不同CeO2前驱体[J].化工学报,2006(09):2241-2244. |
| [20] | Chen DL;Gao L .Novel synthesis of well-dispersed crystalline SnO2 nanoparticles by water-in-oil microemulsion-assisted hydrothermal process[J].Journal of Colloid and Interface Science,2004(1):137-142. |
| [21] | Avvaru B;Patil MN;Gogate PR;Pandit AB .Ultrasonic atomization: Effect of liquid phase properties[J].Ultrasonics,2006(2):146-158. |
| [22] | 施利毅;华彬;张剑平 .微乳液的结构及其在制备超细颗粒中的应用[J].功能材料,1998,29(02):136. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%