Significant SRS sensing behavior of hydrothermally silver decorated sandwiched-like vanadia (Ag-V2O5) nanosheets toward ethanol

This work reports the hydrothermal synthesis of silver decorated sandwiched-like vanadium pentoxide (Ag-V2O5) nanosheets and their investigation for sensing of ethanol, acetone, n-propylamine and ammonia vapors at room temperature. Sandwich-type architectured (M-I-MIO-MIIO) Ag-Ag2O-V2O5 nanosheets have been synthesized here. Structure, morphology and oxidation states of the material were analyzed using X-rays diffraction, FESEM and XPS studies, respectively. Gas sensing characteristics of the sensors based on Ag-V2O5 nanosheets were evaluated both in static and dynamic modes. It was figured out that the behavior of the sensing material is of p-type semiconducting nature with a high sensitivity value (approximate to 22), fast response speed (in seconds) and high selectivity toward ethanol at room temperature which has been explained on the basis of semiconductors models. High sensitivity, quick response and significant selectivity of the sensors confirm their potential applications for environmental, security, food preservation and other industrial purposes.

Automated summary

In this study, silver decorated sandwiched-like vanadium pentoxide (Ag-V2O5) nanosheets were successfully synthesized via hydrothermal method and found to possess high sensitivity, fast response, and high selectivity towards ethanol at room temperature. The sensors showed potential applications in environmental monitoring, security, food preservation, and other industrial purposes.