| 淀粉基碳包覆铁纳米胶囊的合成及其磁学性能 |
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| 引用本文： | 邱介山,孙玉峰,周颖,孙天军,李杞秀. 淀粉基碳包覆铁纳米胶囊的合成及其磁学性能[J]. 新型炭材料, 2006, 21(3): 202-205 |
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| 作者姓名： | 邱介山 孙玉峰 周颖 孙天军 李杞秀 |
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| 作者单位： | 1. 大连理工大学化工学院炭素材料实验室,大连理工大学精细化工国家重点实验室,辽宁,大连,116012;大连理工大学,辽宁省微纳米技术及系统重点实验室,辽宁,大连,116023
2. 大连理工大学化工学院炭素材料实验室,大连理工大学精细化工国家重点实验室,辽宁,大连,116012 |
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| 基金项目： | 辽宁省优秀青年科技人才基金;教育部跨世纪优秀人才培养计划 |
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| 摘 要： | 以淀粉为碳源，通过热解炭化铁／淀粉复合物，成功制备出碳包覆铁（Fe@C）纳米胶囊。在这一过程中淀粉有双重作用，既是碳源又是铁纳米颗粒的稳定剂。采用透射电镜、X射线衍射及振动样品磁强计研究了（Fe@C）纳米胶囊的结构和磁学性能。发现Fe@C纳米胶囊具有完美的铁核（bcc-Fe）／碳壳（石墨层片）包覆结构，其尺寸介于30nm～40nm之间；Fe@C纳米胶囊在室温下有低的剩磁比（Mr／Ms=0．11），表明它在室温下具有超顺磁性。
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| 关 键 词： | 淀粉 碳包覆 磁性能 |
| 文章编号： | 1007-8827（2006）03-0202-04 |
| 收稿时间： | 2006-06-13 |
| 修稿时间： | 2006-09-07 |
Preparation and magnetic properties of carbon encapsulated iron nanocapsules from starch |
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| QIU Jie-shan,SUN Yu-feng,ZHOU Ying,SUN Tian-jun,LI Qi-xiu. Preparation and magnetic properties of carbon encapsulated iron nanocapsules from starch[J]. New Carbon Materials, 2006, 21(3): 202-205 |
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| Authors: | QIU Jie-shan SUN Yu-feng ZHOU Ying SUN Tian-jun LI Qi-xiu |
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| Affiliation: | 1. Carbon Research Laboratory, School of Chemical Engineering, Center for Nanomaterials and Science, State Key Lab of Fine Chemicals , Dalian University of Technology , Dalian 116012, China; 2. Key Laboratory for Micro/Nano Technology and System of Liaoning Province, Dalian University of Technology, Dalian 116023, China |
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| Abstract: | Carbon encapsulated iron(Fe@C) nanocapsules were successfully prepared by pyrolyzing iron/starch composites under mild conditions,in which starch functioned as carbon precursor and stabilizer for iron nanoparticles.The as-obtained Fe@C nanocapsules were examined by TEM,XRD and a vibrating sample magnetometer.Results show that the Fe@C nanocapsules with diameters in a narrow range of 30-40 nm feature well-constructed core/shell structures,consisting of a bcc-Fe core and a graphitic shell.The Fe@C nanocapsules have a low ratio of remanence to saturation magnetization(M_r/M_s = 0.11),implying that they are superparamagnetic at room temperature. |
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| Keywords: | Fe(NO3)3 |
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