| Fe/SBA-3介孔组装体系及其磁特性 |
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| 引用本文： | 倪棋梁,张建成,刘健敏,沈悦.Fe/SBA-3介孔组装体系及其磁特性[J].物理化学学报,2003,19(10):944-947. |
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| 作者姓名： | 倪棋梁 张建成 刘健敏 沈悦 |
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| 作者单位： | School of Material Science and Engineering, Shanghai University(Jiading Campus), Shanghai 201800 |
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| 基金项目： | 国家自然科学基金(90206017)，上海市纳米中心和AM基金资助项目 |
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| 摘 要： | 用不同的实验工艺制备了一组Fe/SAB-3 介孔复合体系.X射线衍射表明,Fe/SAB-3具有六方排列的孔道结构.通过N2吸附实验可知,这种材料具有极高的比表面积.从傅立叶红外光谱可证实,Fe3＋进入了SAB-3的骨架.样品磁测量结果表明,与通常的α-Fe2O3纳米颗粒相比,纳米Fe/SAB-3介孔复合体系中的纳米α-Fe2O3 粒子的矫顽力（Hc）从1765 Oe下降到87 Oe,比饱和磁化强度（Ms）增加了75.4％.
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| 关 键 词： | 复合介孔材料 组装 比饱和磁化强度 |
| 收稿时间： | 2003-03-24 |
| 修稿时间： | 2003年3月24日 |
Fe/SAB-3 Composite Mesoporous Materials and Magnetic Properties |
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| Ni Qi,Liang Zhang Jian,Cheng Liu Jian,Min Shen Yue.Fe/SAB-3 Composite Mesoporous Materials and Magnetic Properties[J].Acta Physico-Chimica Sinica,2003,19(10):944-947. |
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| Authors: | Ni Qi Liang Zhang Jian Cheng Liu Jian Min Shen Yue |
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| Institution: | School of Material Science and Engineering, Shanghai University(Jiading Campus), Shanghai 201800 |
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| Abstract: | A new series of mesoporous silica materials containing nanodispersedα-Fe2O3were synthesized by different methods. X-ray diffraction patterns indicated thatα-Fe2O3/SAB-3 had a hexagonal array pore structure. The N2 adsorption and desorption showed that the materials had very high specific surface area.Fe3＋ entered into pore wall, which was confirmed by Fourier-transform infrared spectroscopy. The results of magnetic measurements showed that the coercive force(Hc) ofα-Fe2O3 decreased from 1 765 Oe to 87 Oe, specific saturation magnetization(Ms) increased by 75.4％ as compared with the conventional nanoα-Fe2O3 particles. |
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| Keywords: | Composite mesoporous material Assemble Specific saturation magnetization |
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