Icosahedral Face-Centered Cubic Fe Nanoparticles: Facile Synthesis and Characterization with Aberration-Corrected TEM

被引：73

作者：

Ling, Tao ^{[1
,2
]}

Xie, Lin ^{[1
,2
]}

Zhu, Jing ^{[1
,2
]}

Yu, Huimin ^{[3
]}

Ye, Hengqiang ^{[5
]}

Yu, Rong ^{[1
,2
]}

Cheng, Zhiying ^{[1
,2
]}

Liu, Li ^{[4
]}

Yang, Guangwen ^{[4
]}

Cheng, Zhida ^{[1
,2
]}

Wang, Yujia ^{[5
]}

Ma, Xiuliang ^{[5
]}

机构：

[1] Tsinghua Univ, Beijing Natl Ctr Electron Microscopy, State Key Lab New Ceram & Fine Proc, Adv Mat Lab, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China

[3] Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China

[4] Tsinghua Univ, Dept Comp Sci & Technol, Beijing 100084, Peoples R China

[5] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China

来源：

NANO LETTERS | 2009年 / 9卷 / 04期

关键词：

MULTIPLY-TWINNED PARTICLES; FERROELECTRIC-FILMS; IRON NANOPARTICLES; GOLD NANOPARTICLES; NANOCRYSTALS; OXYGEN; SCALE;

D O I：

10.1021/nl8037294

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Iron nanoparticles are highly desirable for their potential applications in magnetic and catalytic industry. However, their shape-controlled fabrication is still an important challenge. Here we successfully synthesized icosahedral face-centered cubic (fcc) Fe nanoparticles with size of 5-13 nm by a specifically designed thermodynamic governed synthetic route, which is facile but highly efficient and reproducible. With the aberration-corrected transmission electron microscopy (TEM), the unique icosahedral structure's pseudo-2-fold, 3-fold, and pseudo-5-fold axes were directly observed for the first time and verified by computer simulation, which reveals that nanoparticles' orientations have a large impact on HRTEM images at ultrahigh resolution. It is expected that as-synthesized Fe nanoparticles with sharp corners and edges would be beneficial for tailoring chemical and physical properties at the nanoscale.

引用

页码：1572 / 1576

页数：5

共 32 条

[1] Superlattices of iron nanocubes synthesized from Fe[N(SiMe3)2]2 [J].