Ag2V4O11nanostructures for highly ethanol sensitive performance

Abstract

Ag₂V₄O₁₁ brush-like nanostructures with a large specific surface area have been synthesized by a unique electrochemistry assisted laser ablation in liquids without any template or surfactant in an ambient environment. Considering the large surface-to-volume ratio of the as-synthesized nanostructures, an Ag₂V₄O₁₁ brush-like nanostructured gas sensor was fabricated and exhibited an excellent performance in sensor response to ethanol concentrations in the range of 10 to 600 ppm under low working temperature. This high response was attributed to the highly crystalline and brush-like surface, which leads to the effective adsorption and desorption, and provides more active sites for gas molecules reacting. These findings show our desire to encourage the synthesis of new nanomaterials, e.g. ternary transition metal oxides, as gas sensors prepared by novel means.