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- Title
Glycothermal synthesis of assembled vanadium oxide nanostructures for gas sensing.
- Authors
Fu, Haitao; Jiang, Xuchuan; Yang, Xiaohong; Yu, Aibing; Su, Dawei; Wang, Guoxiu
- Abstract
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 °C for a few hours, and then the precipitates were collected, rinsed, and sintered at high temperatures (e.g., 600 °C) for VO in air and VO in nitrogen, respectively. The as-prepared vanadium oxide particles are nanorods (200 nm × 1 μm) and can assemble into microspheres or urchin-like structures with a diameter of ~3 μm. 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 VO nanoparticles were tested for sensing detection of gas species of acetone, isopropanol, and ammonia. The microurchin structures show higher sensing performance than the nanorods. Graphical Abstract: [Figure not available: see fulltext.]
- Subjects
VANADIUM oxide; NANOSTRUCTURED materials synthesis; GAS detectors; NANOSTRUCTURES; X-ray diffraction; FOURIER transform infrared spectroscopy; ISOPROPYL alcohol
- Publication
Journal of Nanoparticle Research, 2012, Vol 14, Issue 6, p1
- ISSN
1388-0764
- Publication type
Article
- DOI
10.1007/s11051-012-0871-z