Simple and Rapid Synthesis of α-Fe2O3 Nanowires Under Ambient Conditions

被引：214

作者：

Nasibulin, Albert G. ^{[1
,2
]}

Rackauskas, Simas ^{[1
,2
]}

Jiang, Hua ^{[1
,2
]}

Tian, Ying ^{[1
,2
]}

Mudimela, Prasantha Reddy ^{[1
,2
]}

Shandakov, Sergey D. ^{[1
,2
,3
]}

Nasibulina, Larisa. I. ^{[1
,2
]}

Sainio, Jani ^{[4
]}

Kauppinen, Esko I. ^{[1
,2
,5
]}

机构：

[1] Aalto Univ, NanoMat Grp, Dept Appl Phys, FIN-02150 Espoo, Finland

[2] Aalto Univ, Ctr New Mat, FIN-02150 Espoo, Finland

[3] Kemerovo State Univ, Lab Carbon NanoMat, Dept Phys, Kemerovo 650043, Russia

[4] Aalto Univ, Phys Lab, FIN-02150 Espoo, Finland

[5] VTT Biotechnol, Espoo 02044, Finland

来源：

NANO RESEARCH | 2009年 / 2卷 / 05期

基金：

芬兰科学院;

关键词：

Fe2O3; hematite; mechanism; nanowire; synthesis; HIGH-TEMPERATURE OXIDATION; ALIGNED ARRAYS; GROWTH; OXIDE; IRON; VAPOR; HEMATITE; SPECTROSCOPY; ATMOSPHERES; NANOBELTS;

D O I：

10.1007/s12274-009-9036-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We propose a simple method for the efficient and rapid synthesis of one-dimensional hematite (alpha-Fe2O3) nanostructures based on electrical resistive heating of iron wire under ambient conditions. Typically, 1-5 mu m long alpha-Fe2O3 nanowires were synthesized on a time scale of seconds at temperatures of around 700 degrees C. The morphology, structure, and mechanism of formation of the nanowires were studied by scanning and transmission electron microscopies, energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and Raman techniques. A nanowire growth mechanism based on diffusion of iron ions to the surface through grain boundaries and to the growing wire tip through stacking fault defects and due to surface diffusion is proposed.

引用

页码：373 / 379

页数：7

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