石墨包覆铁纳米粒子的结构及生长机制

材料导报, 2008, 22(1): 127-129.

石墨包覆铁纳米粒子的结构及生长机制

曹宏 ^1, , 李儒 ^2, , 桂其迹 ^3, , 王学华 ^4, , 宾晓蓓 ^5,

1.武汉工程大学材料科学与工程学院,武汉,430073

2.武汉工程大学材料科学与工程学院,武汉,430073

3.武汉工程大学材料科学与工程学院,武汉,430073

4.武汉工程大学材料科学与工程学院,武汉,430073

5.武汉理工大学资源与环境工程学院,武汉,430070

基金项目: 湖北省武汉市青年科技晨光计划(20065004116-35) 湖北省自然科学基金(2004ABA090)

关键词：纳米粒子 , 石墨 , 铁 , 模板 , 包覆

Microstructure and Its Growth Mechanism of Graphite Encapsulated Iron Nanoparticles

用金属钾还原2阶FeCl3石墨层间化合物(FeCl3-GICs)前驱体制备了石墨包覆纳米α-Fe.X射线衍射(XRD)、X射线能量色散谱(EDX)分析表明所制备样品由石墨、α-Fe和少量KCl组成,透射电镜(TEM)观察发现样品中的α-Fe为纳米粒子,嵌入在石墨结构层间,含量丰富.高分辨透射电镜(HRTEM)观察证实α-Fe纳米粒子由多晶组成,呈二维或准二维形态,α-Fe纳米晶的空间取向严格受石墨结构层控制.在实验基础上提出了一种石墨包覆纳米α-Fe的可能生长机制.

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材料期刊网

石墨包覆铁纳米粒子的结构及生长机制

Microstructure and Its Growth Mechanism of Graphite Encapsulated Iron Nanoparticles

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