| 磁性纳米Fe_3O_4与Fe_3O_4/TiO_2复合材料的制备 |
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| 引用本文： | 梁翠芬,熊予莹,初本莉,肖化.磁性纳米Fe_3O_4与Fe_3O_4/TiO_2复合材料的制备[J].华南师范大学学报(自然科学版),2010,1(2):63-66. |
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| 作者姓名： | 梁翠芬 熊予莹 初本莉 肖化 |
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| 作者单位： | 1.1.华南师范大学物理与电信工程学院2.华南师范大学研究生院 |
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| 摘 要： | 用共沉淀法制备了纳米Fe3O4.TEM及XRD的测定结果表明制备了尖晶石型纳米Fe3O4,VSM结果显示样品具有超顺磁性.在此基础上采用均匀沉淀法制备了Fe3O4/TiO2复合材料,XRD和UV-Vis结果表明制备出双层封闭结构的复合粒子的光吸收带发生了较大幅度的红移,并进入可见光区,同时吸收光强度也明显增大,这对开发日光型催化剂是十分有利的.
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| 关 键 词： | 磁性纳米材料 共沉淀法 Fe3O4 TiO2 |
| 收稿时间： | 2010-01-13 |
SYTHESIS OF MAGNETIE NANOMETER Fe3O4 POWDER AND Fe3O4/TiO2 COMPOSITE MATERIAL |
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| LIANG Cuifen,XIONG Yuying,CHU Benli,XIAO Hua.SYTHESIS OF MAGNETIE NANOMETER Fe3O4 POWDER AND Fe3O4/TiO2 COMPOSITE MATERIAL[J].Journal of South China Normal University(Natural Science Edition),2010,1(2):63-66. |
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| Authors: | LIANG Cuifen XIONG Yuying CHU Benli XIAO Hua |
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| Abstract: | Chemical co-precipitation was selected as the preparation methods of magnetic nanoparticles Fe3O4. XRD and TEM pictures showed that Fe3O4 particles obtained were well crystallized cubic particles with high purity. VSM showed that the Fe3O4 nanoparticles were paramagnetic. Further the Fe3O4 /TiO2 composite material, which prepared by means of the homogenous precipitation coating technique, is studied. Its structure and optical properties are characterized by XRD and UV-Vis. The results indicate that TiO2 coating on the surface of Fe3O4 is equable. The Fe3O4 /TiO2 composite material has a large red shift of absorption band edge into the visible light. The absorbance is apparent increase at the same time, which is favorable for the development of daylight catalyst. |
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| Keywords: | Fe3O4 TiO2 |
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