Crystal-Phase- and Morphology-Controlled Synthesis of Fe2O3 Nanomaterials

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	Crystal-Phase- and Morphology-Controlled Synthesis of Fe2O3 Nanomaterials
	X. L. Mou; Y. Li; B. S. Zhang; L. D. Yao; X. J. Wei; D. S. Su; W. J. Shen
	2012
发表期刊	European Journal of Inorganic Chemistry
ISSN	1434-1948
期号	16 页码:2684-2690
摘要	a- and ?-Fe2O3 nanorods have been prepared from a beta-FeOOH precursor that was obtained by aqueous-phase precipitation of ferric chloride. The oxyhydroxide precursor had a rodlike shape with a diameter of 30-40 nm and a length of 400-500 nm. Calcination at 500 degrees C of the rod-shaped oxyhydroxide in air yielded a-Fe2O3 nanorods, whereas heating to reflux in polyethylene glycol (PEG) at 200 degrees C resulted in the formation of ?-Fe2O3 nanorods. Both oxides inherited the rodlike morphology of the precursor but exposed different crystalline facets. When being used to catalyze NO reduction by CO, an environmentally important reaction in NO abatement, the ?-Fe2O3 nanorods were much more active than the a-Fe2O3 nanorods and showed an apparent crystal-phase effect. This was because the ?-Fe2O3 nanorods simultaneously exposed iron and oxygen ions on their surfaces, which facilitated the adsorption and activation of NO and CO molecules.
部门归属	[zhang, bingsen; su, dang sheng] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [mou, xiaoling; li, yong; wei, xuejiao; shen, wenjie] chinese acad sci, dalian inst chem phys, state key lab catalysis, dalian 116023, peoples r china. [yao, lide; su, dang sheng] max planck soc, fritz haber inst, dept inorgan chem, d-14195 berlin, germany.;su, ds (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china.;dangsheng@fhi-berlin.mpg.de; shen98@dicp.ac.cn
关键词	Crystal Phase Morphology Iron Nanostructures Surface Analysis Iron-oxide Beta-feooh Alpha-fe2o3 Nanorods Magnetic-properties Gamma-fe2o3 Nanoparticles Carbon-monoxide No Oxidation Co Reaction Hematite Reduction
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60162
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. L. Mou,Y. Li,B. S. Zhang,et al. Crystal-Phase- and Morphology-Controlled Synthesis of Fe2O3 Nanomaterials[J]. European Journal of Inorganic Chemistry,2012(16):2684-2690.
APA	X. L. Mou.,Y. Li.,B. S. Zhang.,L. D. Yao.,X. J. Wei.,...&W. J. Shen.(2012).Crystal-Phase- and Morphology-Controlled Synthesis of Fe2O3 Nanomaterials.European Journal of Inorganic Chemistry(16),2684-2690.
MLA	X. L. Mou,et al."Crystal-Phase- and Morphology-Controlled Synthesis of Fe2O3 Nanomaterials".European Journal of Inorganic Chemistry .16(2012):2684-2690.