In Situ Synthesis of Hierarchical Co(CO₃)_0.5(OH)·0.11H₂O@ZIF-67/WO₃ With High Humidity Immunity and Response to H₂S Sensing.

ABSTRACT: H₂S gas sensors with facile preparation, low detection limits, and high selectivity are crucial for environmental and human health monitoring. However, it is difficult to maintain a high response of H₂S gas sensors under high humidity in practical applications. To face this dilemma, a layer-by-layer growth method is applied to in situ prepare a nanostructured Co(CO₃)_0.5(OH)·0.11H₂O/WO₃ coated by a hydrophobic hierarchical ZIF-67 as the H₂S sensor. This novel composite exhibits excellent humidity immunity without sacrificing the excellent sensitivity and selectivity of H₂S. At a low operating temperature of 90 °C, a remarkable response value of 1052.3 to 100 ppm H₂S has been achieved, which is

SUBMITTER: Gui Y 

PROVIDER: S-EPMC11497035 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature