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.
doi:
10.3866/PKU.WHXB20031012
Citation: 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. doi: 10.3866/PKU.WHXB20031012
Citation: 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. doi: 10.3866/PKU.WHXB20031012
Fe/SBA-3介孔组装体系及其磁特性
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
English
Fe/SAB-3 Composite Mesoporous Materials and Magnetic Properties
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 hexa nal 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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