期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 156, 期 1, 页码 368-374出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2011.04.050
关键词
alpha-Fe2O3; Hydrothermal method; Nanorod-bundle; Gas sensor
资金
- National Nature Science Foundation of China [60625301, 61006055, 61074172]
Bundle-like alpha-Fe2O3 nanostructures were successfully synthesized by a simple calcination of beta-FeOOH precursor derived from a hydrothermal method in the presence of poly(vinyl pyrrolidone). The as-prepared products were characterized by X-ray power diffraction, field emission scanning electron microscopy, and transmission electron microscopy. The results indicated that bundle-like nanostructures were composed of well-aligned single crystalline nanorods with the diameters of 20-30 nm and the lengths of 200-300 nm. The gas sensing properties of as-prepared products were investigated. It was found that the sensor based on alpha-Fe2O3 nanostructure exhibited high response, quick response-recovery, and good repeatability to acetone at 250 degrees C. (C) 2011 Elsevier B.V. All rights reserved.
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