Single β-AgVO3 Nanowire H2S Sensor

We report the electrical transport and H2S sensing properties of single beta-AgVO3 nanowire device beta-AgVO3 nanowires were successfully prepared by ultrasonic treatment followed by hydrothermal reaction using V2O5 sol The individual beta-AgVO3 nanowire exhibits a 'threshold switching phenomenon High bias (i e, 6 V for Au contacts) is required to initially switch the individual nanowire device from nonconductive to conductive, and it may be related to the formation of nanoscale metallic Ag when enough voltage is applied between the two electrodes This novel nanomaterial shows good H2S sensing performances with short response and recovery time within 20 s, relatively low response concentration of 50 ppm, and good selectivity