| Synthesis and magnetic properties of CoFe2O4 nanoparticles confined within mesoporous silica | |
| Department | 固体润滑国家重点实验室 |
Yan XB(阎兴斌) ; Chen JT(陈江涛); Xue QJ(薛群基); Philippe Miele
| |
| 2010 | |
| Source Publication | Microporous and Mesoporous Materials
 |
| ISSN | 1387-1811 |
| Volume | 135Pages:137-142 |
| Abstract | We report here the synthesis and magnetic properties of cobalt ferrite (CoFe2O4) nanoparticles inside thenanoscale channels of highly ordered mesoporous silica SBA-15. Formation of CoFe2O4 nanoparticlesinside the mesoporous channels was realized by impregnation of cobalt salt and iron salt precursors intothe channels of the SBA-15, followed by calcination at different temperatures (400–1000 C) in air. Theproducts were characterized by X-ray diffraction (XRD), field emission scanning and transmission elec-tron microscopies (FESEM and TEM), and nitrogen adsorption–desorption isotherm measurements. Asper results, a typical characteristic of the obtained materials is that the mesoporous channels of SBA-15 are partially filled by CoFe2O4 nanocrystallites. In consequence, these materials exhibit open, ordered2D hexagonal frameworks, which are very similar to that of the pristine SBA-15 except for the reduceddimension and specific surface area. Magnetic properties of the obtained materials show strong depen-dence on the calcination temperature. The maximum-value combination of the saturation magnetization(Ms), the remnant magnetization (Mr) and the coercivity (Hc) is obtained from the sample prepared at1000 C. Moreover, compared with the pure CoFe2O4 powder prepared at the same temperature, theCoFe2O4 incorporated SBA-15 composite possess higher magnetic parameters (Ms, Mr and Hc). |
| Keyword | Cofe2o4 Nanoparticles Mesoporous Silica Heat-treatment Magnetic Property |
| Subject Area | 材料科学与物理化学 |
| Funding Organization | the Top Hundred Talents Program of Chinese Academy of Sciences |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 低维材料摩擦学组 |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/1045 |
| Collection | 固体润滑国家重点实验室（LSL） |
| Corresponding Author | Yan XB(阎兴斌) |
| Recommended Citation GB/T 7714 | Yan XB,Chen JT,Xue QJ,et al. Synthesis and magnetic properties of CoFe2O4 nanoparticles confined within mesoporous silica[J]. Microporous and Mesoporous Materials,2010,135:137-142. |
| APA | 阎兴斌,陈江涛,薛群基,&Philippe Miele.(2010).Synthesis and magnetic properties of CoFe2O4 nanoparticles confined within mesoporous silica.Microporous and Mesoporous Materials,135,137-142. |
| MLA | 阎兴斌,et al."Synthesis and magnetic properties of CoFe2O4 nanoparticles confined within mesoporous silica".Microporous and Mesoporous Materials 135(2010):137-142. |
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| 2010137-142.pdf（751KB） | 开放获取 | License | View Application Full Text | |||
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