Ionic liquid-assisted synthesis of WO3 particles with enhanced gas sensing properties

Abstract

An ionic liquid-assisted synthesis route is proposed for the synthesis of WO₃ particles. The synthesized WO₃ particles include nanoplates, nanorods and nanoparticle-constructed spheres, which can be well controlled by the ionic liquids. Specifically, the gas sensing properties of the synthesized WO₃ spheres to various organic compounds (methanol, ethanol, isopropanol, ethyl acetate and toluene) exhibit remarkable sensitivities, low detection limits, and fast response/recovery times, which demonstrates their useful applications in the detection of various organic compounds.