Enhanced toxic gas sensing properties with hexagonal- polyhedral 3D like ZSO chemiresistive sensor

Abstract

Abstract An enhanced thickness modification of gas sensing device was fabricated in our lab which integrates the gas adsorbent and the electrochemical detection of toxic gas (NO2). The polyhedral perovskite ZSO nanocomposite has been synthesized by sol-gel method and report on novel, selectivity, low operating temperature NO2 gas sensor based on ZSO nanocomposite. The conventional ZSO nanocomposite material has been measured the influence of width discrepancy from 230 nm to 644 nm. The ZSO nanocomposite film thickness ~ 460 nm exhibited a greatest sensor response ~ 2.1×103 towards 20 ppm NO2 at an operating temperature of 90°C. Moreover, NO2 detection was observed earlier response kinetics in which response and recovery time to be 3.51 and 6.91 min, respectively. The detected reproducibility tested sensor was 97%. The sensor exhibits high selectivity to NO2 (20 ppm) than other cross-sensitivity such as CO, acetone, IPA, CH4, NH3 and CO2 (2000 ppm) were also investigated. Finally, the investigated senor could be used for the trace detection of NO2 at industrial level.