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核壳结构型Fe3O4@C@mSiO2复合物的制备
The Synthesis of Core-shell Structured Fe3O4@C@mSiO2 Composites
【摘要】 本文通过溶剂热法制备了粒径较均匀的磁性Fe3O4粒子,后利用喷雾干燥技术在其表面包覆了一层碳,采用溶胶—凝胶过程在碳层上包覆一层介孔结构的氧化硅,得到了磁性核/介孔壳结构的复合材料。氮气吸附脱附测试显示所得复合材料具有较高的孔容和比表面积。
【Abstract】 Solvothermal?method was adopted to prepare uniform Fe3O4 magnetic nanoparticles.Then Carbon was deposited on Fe3O4 by spray-drying process.Mesoporous silica was deposited on the Fe3O4 core by sol-gel method.Core-shell structured magnetic mesoporous composites was obtained.The results showed that the composites possess relatively large pore volume and specific surface area.
【关键词】 核壳结构;
磁性材料;
四氧化三铁;
介孔氧化硅;
碳材料;
【Key words】 Core-shell structure; Magnetic; Ferroferric oxide; Silicon dioxide; Carbon;
【Key words】 Core-shell structure; Magnetic; Ferroferric oxide; Silicon dioxide; Carbon;
- 【文献出处】 科技视界 ,Science & Technology Vision , 编辑部邮箱 ,2017年02期
- 【分类号】TB33
- 【下载频次】298