【作者】：Peng Sun, Lu You, Dawei Wang, Yanfeng Sun∗, Jian Ma, Geyu Lu∗
【题目】：Synthesis and gas sensing properties of bundle-like alpha-Fe2O3 nanorods
【关键词】：alpha-Fe2O3, Hydrothermal method, Nanorod-bundle, Gas sensor
【版面信息】：SENSORS AND ACTUATORS B-CHEMICAL 156 (2011) 368-374
摘要:
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-Fe2O3nanostructure exhibited high response, quick response-recovery, and good repeatability to acetone at 250 ℃
