de.mpg.escidoc.pubman.appbase.FacesBean
English
 
Help Guide Disclaimer Contact us Login
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

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

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons22269

Yao,  Lide
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons22148

Su,  Dang Sheng
Shenyang National Laboratory for Materials Science Institute of Metal Research, Chinese Academy of Science;
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

Locator
There are no locators available
Fulltext (public)
There are no public fulltexts available
Supplementary Material (public)
There is no public supplementary material available
Citation

Mou, X., Li, Y., Zhang, B. S., Yao, L., Wei, X., Su, D. S., et al. (2012). Crystal-Phase- and Morphology-Controlled Synthesis of Fe2O3 Nanomaterials. European Journal of Inorganic Chemistry, 2012(16), 2684-2690. doi:10.1002/ejic.201101066.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0010-1EB0-6
Abstract
α- and γ-Fe2O3 nanorods have been prepared from a β-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 °C of the rod-shaped oxyhydroxide in air yielded α-Fe2O3 nanorods, whereas heating to reflux in polyethylene glycol (PEG) at 200 °C resulted in the formation of γ-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 γ-Fe2O3 nanorods were much more active than the α-Fe2O3 nanorods and showed an apparent crystal-phase effect. This was because the γ-Fe2O3 nanorods simultaneously exposed iron and oxygen ions on their surfaces, which facilitated the adsorption and activation of NO and CO molecules.