以正硅酸乙酯(TEOS)、无水乙醇(Eth)、Fe(NO3)3·9H2O和盐酸(HCI)为原料,采用溶胶一凝胶方法制备了纳米α-Fe2O3/SiO2复合材料.同时研究了热处理温度以及Fe2O3浓度对纳米复合材料α-Fe2O3/SiO2的形成及磁性能的影响.结果表明:纳米α-Fe2O3/SiO2复合材料最佳热处理温度为700℃左右,Fe2O3最佳浓度为40%.(质量分数)左右,相应的纳米α-Fe2O3/SiO2复合材料的磁性能也是最佳的.
参考文献
| [1] | 张立德;牟季美.纳米材料和纳米结构[M].北京:科学出版社,2001:491-503. |
| [2] | DORMANN J L;FIORANI D.Magnetic properties of fine particles[M].Amsterden:North-Holland,1991:309-423. |
| [3] | 李志远;姜斌;张吕鸿 等.纳米氧化铁的制备及其掺杂效应[J].化学工业与工程,2003,6(20):185-189,204. |
| [4] | Casas L.;Rodriguez E.;Molins E.;Tejada J.;Sort J.;Roig A. .Silica aerogel-iron oxide nanocomposites: structural and magnetic properties[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,2001(1/3):37-43. |
| [5] | Kan SH.;Peng XG.;Zhang XT.;Li DM.;Xiao LZ.;Zou GT.;Li TJ.;Yu S. .FORMATION PROCESS OF NANOMETER-SIZED CUBIC FERRIC OXIDE SINGLE CRYSTALS[J].Journal of Colloid and Interface Science,1996(2):673-680. |
| [6] | Young Soo Kang;Subhash Risbud;John F. Rabolt;Pieter Stroeve .Synthesis and Characterization of Nanometer-Size Fe_3O_4 and γ-Fe_2O_3 Particles[J].Chemistry of Materials,1996(9):2209-2211. |
| [7] | WOODING A;KILNER M;LAMBICK D B .Studies of the double surfactant layer stabilization of water-based magnetic fluids[J].Journal of Colloid and Interface Science,1991,144(01):236-242. |
| [8] | QIAN Y T;XIE Y;HE C et al.Hydrothermal preparation and characterization of uhrafine magnetite powders[J].Materials Research Bulletin,1994,29(09):953-957. |
| [9] | ROUANET A;SOLMON H;PICHELIN G .Synthesis by vaporization-eondensation and characterization of γ-Fe2O3,In2O3,SnO2,ZnO and Zr1-xYxO2-δ nanophases[J].Nanostructured Materials,1995,6(1-4):283-286. |
| [10] | Jen-Bin Shi;Chia-Wei Lee;Jhe-Wei Guo .Optical and magnetic properties of elliptical hematite (alpha-Fe_2O_3) nanoparticles coated with uniform continuous layers of silica of different thickness[J].Materials Letters,2007(30):5268-5270. |
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