Synthesis-Dependent Atomic Surface Structures of Oxide Nanoparticles

被引：51

作者：

Lin, Yuyuan ^{[1
]}

Wen, Jianguo ^{[2
]}

Hu, Linhua ^{[3
]}

Kennedy, Robert M. ^{[3
]}

Stair, Peter C. ^{[3
,4
]}

Poeppelmeier, Kenneth R. ^{[3
,4
]}

Marks, Laurence D. ^{[1
]}

机构：

[1] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

[2] Argonne Natl Lab, Electron Microscopy Ctr, Argonne, IL 60439 USA

[3] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

[4] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 15期

关键词：

SCANNING-TUNNELING-MICROSCOPY; SRTIO3(001) SURFACE; HYDROTHERMAL SYNTHESIS; HIGH-RESOLUTION; RECONSTRUCTIONS; MICROWAVE; NANOCUBOIDS; SCATTERING; ELECTRONS; TITANATE;

D O I：

10.1103/PhysRevLett.111.156101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using SrTiO3 nanocuboids as a model system, we show with aberration-corrected high resolution electron microscopy at sub-angstrom resolution that surface relaxations or reconstructions are present on the nanocuboids, depending on the synthetic process. Oleic acid synthesis, acetic acid synthesis, and microwave-assisted acetic acid synthesis result in a SrO termination, TiO2-rich reconstruction, and mixed termination, respectively. The experimental atomic positions are in better agreement with density functional theory calculations using an exact-exchange corrected PBEsol functional than the Perdew-Burke-Ernzerhof (PBE) functional.

引用

页数：5

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