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Issue 81, 2014
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One-pot controlled synthesis of single-crystal α-Fe2O3 hollow nanostructure and its gas sensing properties

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Abstract

A series of single-crystal α-Fe2O3 nanostructures with tunable morphologies have been prepared via a simple one-pot solvothermal synthesis. The as-prepared nanoparticles were fully characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution TEM (HR-TEM), selective area electron diffraction (SAED), N2 adsorption–desorption isotherms, and other techniques. The morphologies of the products can be easily adjusted by controlling the amount of NaAc added; with the amount of NaAc increasing the shell thickness of hollow spheres decreases, till the hollow structures disappeared and changed to nanoflower aggregates. Reaction temperature and the solvent ratio also play important roles in the synthesis of hollow nanospheres. The gas sensing properties of the as-prepared samples were also investigated. The results showed that the samples exhibited good gas sensing properties towards acetone vapor, and the gas sensing behavior was related to the morphologies of the samples.

Graphical abstract: One-pot controlled synthesis of single-crystal α-Fe2O3 hollow nanostructure and its gas sensing properties

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Supplementary files

Article information


Submitted
18 Jul 2014
Accepted
03 Sep 2014
First published
04 Sep 2014

RSC Adv., 2014,4, 42899-42904
Article type
Paper

One-pot controlled synthesis of single-crystal α-Fe2O3 hollow nanostructure and its gas sensing properties

X. Jia, F. Yue, X. Chen, H. Pan, W. Liu and J. Liu, RSC Adv., 2014, 4, 42899
DOI: 10.1039/C4RA07275H

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