Glycothermal synthesis of assembled vanadium oxide

Publisher:
Springer
Publication Type:
Journal Article
Citation:
Journal of nanoparticle Research, 2012, 14 (6), pp. 1 - 14
Issue Date:
2012-01
Full metadata record
Files in This Item:
Filename Description Size
Thumbnail2011004327OK.pdf599.53 kB
Adobe PDF
This study demonstrates a facile but effective glycothermal method to synthesize vanadium oxide nanostructures for gas sensing detection. In this method, sodium orthovanadate was first dispersed and heated in ethylene glycol at 120-180 degrees C for a few hours, and then the precipitates were collected, rinsed, and sintered at high temperatures (e.g., 600 degrees C) for V2O5 in air and V2O3 in nitrogen, respectively. The as-prepared vanadium oxide particles are nanorods (200 nm x 1 mu m) and can assemble into microspheres or urchin-like structures with a diameter of similar to 3 mu m. The experimental parameters (temperature, time, and surfactants) and the formation mechanisms were investigated by various advanced techniques, such as transmission electron microscope, scanning electron microscope, X-ray diffraction, Fourier transform infrared spectroscopy, and thermo-gravimetric analysis. Finally, the V2O5 nanoparticles were tested for sensing detection of gas species of acetone, isopropanol, and ammonia. The microurchin structures show higher sensing performance than the nanorods.
Please use this identifier to cite or link to this item: