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30 nm～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.
参考文献
| [1] | Kroto H W;Heath J R;OBrien S C et al.C60:Buckminsterfullerene[J].Nature,1985,318:162-163. |
| [2] | Ruoff R;Lorents D C;Chan B et al.Single crystal metals encapsulated in carbon nanoparticles[J].Science,1993,259:346-348. |
| [3] | Ajayan P M;Iijima S .Capillarity induced filling of carbon nanotubes[J].Nature,1993,361:333-335. |
| [4] | 张滨,刘畅,成会明,才庆魁.纳米碳管内包覆外来物质的研究进展[J].新型炭材料,2003(03):174-180. |
| [5] | Wendy Teunissen;Frank M.F.de Groot;John Geus;Odile Stephan;Marcel Tence;Christian Colliex .The Structure of Carbon Encapsulated NiFe Nanoparticles[J].Journal of Catalysis,2001(1):169-174. |
| [6] | G. E. Gadd;M. Collela;M. Blackford;A. Dixon;P. J. Evans;D. McCulloch;S. Bulcock;D. Cockayne .The encapsulation of Ni in graphitic layers using C_(60) as a precursor[J].Carbon: An International Journal Sponsored by the American Carbon Society,2001(12):1769-1787. |
| [7] | 雷中兴,李轩科,汪厚植,洪学勤,陈家唯.包覆纳米镍粒子的碳纳米管磁性研究（英文）[J].新型炭材料,2002(04):67-70. |
| [8] | Jieshan Qiu;Yongfeng Li;Yunpeng Wang .Synthesis of carbon-encapsulated nickel nanocrystals by arc-discharge of coal-based carbons in water[J].Fuel,2004(4/5):615-617. |
| [9] | Jieshan Qiu;Yongfeng Li;Yunpeng Wang;Yuliang An;Zongbin Zhao;Ying Zhou;Wen Li .Preparation of carbon-coated magnetic iron nanoparticles from composite rods made from coal and iron powders[J].Fuel Processing Technology,2004(3):267-274. |
| [10] | Hayashi T;Hirono S;Tomita M .Magnetic thin film of cobalt nanocrystals encapsulated in graphite-like carbon[J].Nature,1996,381:772-774. |
| [11] | Tsang S C;Qiu J;Harris P J F .Synthesis of fullerenic nanocapsules from bio-molecule carbonization[J].Chemical Physics Letters,2000,322:553-560. |
| [12] | Noriaki Sano;Hiroshi Akazawa;Takeyuki Kikuchi .Separated synthesis of iron-included carbon nanocapsules and nanotubes by pyrolysis of ferrocene in pure hydrogen[J].Carbon: An International Journal Sponsored by the American Carbon Society,2003(11):2159-2162. |
| [13] | 吴卫泽,朱珍平,刘振宇.热处理对爆炸法制备的碳包裹碳化铁纳米颗粒的影响[J].新型炭材料,2002(04):7-12. |
| [14] | Wang Y;Ren J W;Deng K et al.Preparation of tractable platinum,rhodium,and ruthenium nanoclusters with small particle size in organic media[J].Chemistry of Materials,2000,12(06):1622-1627. |
| [15] | Sangjin Han;Youngkwang Yun;Kyung-Won Park;Yung-Eun Sung;Taeghwan Hyeon .Simple Solid-Phase Synthesis of Hollow Graphitic Nanoparticles and their Application to Direct Methanol Fuel Cell Electrodes[J].Advanced Materials,2003(22):1922-1925. |
| [16] | Xiaoqing Zhang;Jacob Golding;Iko Burgar .Thermal decomposition chemistry of starch studied by ~(13)C high-resolution solid-state NMR spectroscopy[J].Polymer: The International Journal for the Science and Technology of Polymers,2002(22):5791-5796. |
| [17] | 邱介山,安玉良,李杞秀,周颖,杨青.生物基碳包覆纳米材料（Mn,Co）的制备[J].物理化学学报,2004(03):260-264. |
| [18] | Yi Lu;Zhenping Zhu;Zhenyu Liu .Carbon-encapsulated Fe nanoparticles from detonation-induced pyrolysis of ferrocene[J].Carbon: An International Journal Sponsored by the American Carbon Society,2005(2):369-374. |
| [19] | Sajitha EP;Prasad V;Subramanyam SV;Eto S;Takai K;Enoki T .Synthesis and characteristics of iron nanoparticles in a carbon matrix along with the catalytic graphitization of amorphous carbon[J].Carbon: An International Journal Sponsored by the American Carbon Society,2004(14):2815-2820. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%