| 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. |
| 部门归属 | [ling, tao; xie, lin; zhu, jing; yu, rong; cheng, zhiying; cheng, zhida] tsinghua univ, beijing natl ctr electron microscopy, state key lab new ceram & fine proc, adv mat lab, beijing 100084, peoples r china. [ling, tao; xie, lin; zhu, jing; yu, rong; cheng, zhiying; cheng, zhida] tsinghua univ, dept mat sci & engn, beijing 100084, peoples r china. [yu, huimin] tsinghua univ, dept chem engn, beijing 100084, peoples r china. [liu, li; liu, li; yang, guangwen] tsinghua univ, dept comp sci & technol, beijing 100084, peoples r china. [ye, hengqiang; wang, yujia; ma, xiuliang] chinese acad sci, inst met res, shenyang 110016, peoples r china.;zhu, j (reprint author), tsinghua univ, beijing natl ctr electron microscopy, state key lab new ceram & fine proc, adv mat lab, beijing 100084, peoples r china;jzhu@mail.tsinghua.edu.cn
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| APA |
T. Ling.,L. Xie.,J. Zhu.,H. M. Yu.,H. Q. Ye.,...&X. L. Ma.(2009).Icosahedral Face-Centered Cubic Fe Nanoparticles: Facile Synthesis and Characterization with Aberration-Corrected TEM.Nano Letters,9(4),1572-1576.
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