碳包裹对Fe3O4纳米颗粒稳定性的影响
PDF下载 (22351)陆彦峄,张 鹏,钟承权,王 军*.碳包裹对Fe3O4纳米颗粒稳定性的影响[J].宁波大学学报(理工版),2018,31(3):55-59.DOI:
LU Yan-yi,ZHANG Peng,ZHONG Cheng-quan,WANG Jun*.Effect of carbon-coating on the stability of Fe3O4 nanoparticles[J].Journal of Ningbo University(Natural Science & Engineering Edition),2018,31(3):55-59.DOI:
| Title: | Effect of carbon-coating on the stability of Fe3O4 nanoparticles |
| 作者: | 陆彦峄, 张 鹏, 钟承权, 王 军* |
| Author(s): | LU Yan-yi, ZHANG Peng, ZHONG Cheng-quan, WANG Jun* |
| 关键词: | 氧化铁; 纳米颗粒; 碳包裹; 热稳定性; 磁性 |
| Keywords: | iron oxide; nanoparticle; carbon-coated; thermal stability; magnetism |
| 分类号: | O469 |
| 文献标识码: | A |
| 摘要: | 纳米材料晶粒尺寸的变化会直接导致材料相结构的变化, 从而限制材料的应用, 如何提高纳米材料结构的稳定性随之成为纳米材料发展和应用中的关键问题之一. 为了研究碳包裹对Fe3O4纳米颗粒稳定性的影响, 本文先采用水热法制备出17~20nm的Fe3O4纳米颗粒作为前驱体, 再以油胺作为溶剂, 通过球磨法在Fe3O4粒子表面包覆一层碳涂层, 合成Fe3O4@C复合纳米颗粒. 利用X射线衍射仪、扫描电子显微镜和综合物理测试系统对样品的形貌尺寸和结构性能进行表征. 结果表明, 碳包裹有效地阻止了纳米颗粒的团聚, 增加了纳米材料的分散性, 使得Fe3O4纳米颗粒向Fe2O3转变的起始转化温度提高了50℃, 即使在空气中经过350℃焙烧和在高真空下进行300~900K的测试, 结构也并未发生变化. |
| Abstract: | The change of the grain size of nanomaterials will directly lead to the change of material phase structure, which could limit the application of materials. The improvement of nanomaterials stability is one of the key problems in the development and application of nanomaterials. The Fe3O4 nanoparticles were prepared by hydrothermal method and ball milling, the coated shell on the surface of Fe3O4 particles were synthesized, using OleylaMine as solvent. The structure, morphology, thermal stability and magnetic properties of the samples were characterized, using X-ray diffraction, electron microscopy and Physical Property Measurement System. The results show that the carbon-coating effectively prevents the agglomeration of nanoparticles and increases the dispensability of nanomaterials. In addition, it increased the transformation temperature of Fe3O4 to α-Fe2O3 by 50℃. The structure remains unaltered, following roasting in the air of 350℃ and a 300-900K test under high vacuum. |
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| 备注/Memo: | 收稿日期: 2017-11-09. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/ 基金项目: 国家自然科学基金（11474174）. 第一作者: 陆彦峄（1993－）, 女, 江苏徐州人, 在读硕士研究生, 主要研究方向: 金属纳米材料. E-mail: yanyi0802-lu@163.com *通信作者: 王军（1969－）, 男, 江西丰城人, 教授, 主要研究方向: 磁性纳米材料. E-mail: wangjun2@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
