Preparation and Characterization of Core-shell Structure Fe3O4@C Magnetic Nanoparticles☆
Preparation and Characterization of Core-shell Structure Fe3O4@C Magnetic Nanoparticles☆
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DOI：
10.1016/j.proeng.2015.01.291
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Da Shi;Hao Yang;Shengfu Ji;Sai Jiang;Li Xuefei;Zhang Danni
中科院分区：
文献类型：
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作者：
Da Shi;Hao Yang;Shengfu Ji;Sai Jiang;Li Xuefei;Zhang Danni
以超顺磁性Fe 3 O 4纳米球为磁性核，葡萄糖、酚醛树脂和可溶性淀粉树脂为碳源，采用溶剂热法合成了核壳结构Fe3O4@C磁性纳米粒子。采用TEM、XRD和VSM对Fe3O4@C磁性纳米粒子的结构进行了表征。研究了制备条件对Fe3O4@C磁性纳米粒子结构的影响。结果表明：以葡萄糖为碳源的Fe 3 O 4@Cg磁性纳米粒子直径为250 nm，碳壳厚度为8-10 nm;以苯酚为碳源的Fe 3 O 4@Cp磁性纳米粒子直径为160 nm，碳壳厚度为6-8 nm;当碳源变为可溶性淀粉时，制备的磁性纳米粒子直径为150 nm，碳壳厚度为15-20 nm。通过XRD分析，三种碳源合成的磁性纳米粒子Fe3O4@C除了Fe 3 O 4的所有特征峰外，都有无定形碳衍射峰。Fe3O4@Cg、Fe3O4@Cp和Fe3O4@Cs的磁性分别为74.1emu/g、48.7emu/g和41.3emu/g。
The core-shell structure Fe3O4@C magnetic nanoparticles were synthesized with superparamagnetic Fe3O4nanosphere as a magnetic core, glucose, phenolic and soluble starch resin as carbon source via a solvothermal method. The structure of Fe3O4@C magnetic nanoparticles was characterizes using TEM, XRD and VSM. The effects of preparation conditions in the structure of the Fe3O4@C magnetic nanoparticles were taken out. The results indicate: Fe3O4@Cg magnetic nano particle with glucose as carbon source has 250 nm diameter and 8-10 nm thickness of carbon shell; Fe3O4@Cp has 160 nm diameter and 6-8 nm carbon shell with phenolic as carbon source; when the carbon source changes to soluble starch, the magnetic nano particle prepared with 150 nm diameter and 15-20 nm carbon shell. Through XRD, the magnetic nano particles Fe3O4@C synthesized with three kinds of carbon sources have amorphous carbon diffraction peak except for all the characteristic peaks of Fe3O4. The magnetism of Fe3O4@Cg, Fe3O4@Cp and Fe3O4@Cs are 74.1 emu/g, 48.7 emu/g and 41.3 emu/g, respectively.