Glycothermal synthesis of assembled vanadium oxide nanostructures for gas sensing

Haitao Fu, Xuchuan Jiang, Xiaohong Yang, Aibing Yu, Dawei Su, Guoxiu Wang

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28 Citations (Scopus)

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 degree Celcius for a few hours, and then the precipitates were collected, rinsed, and sintered at high temperatures (e.g., 600degree Celcius) for V2O5 in air and V2O3 in nitrogen, respectively. The as-prepared vanadium oxide particles are nanorods (200 nm x 1 micron) and can assemble into microspheres or urchin-like structures with a diameter of 3 microns. 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.
Original languageEnglish
Pages (from-to)1 - 14
Number of pages14
JournalJournal of Nanoparticle Research
Volume14
Issue number6
DOIs
Publication statusPublished - 2012
Externally publishedYes

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