Polypyrrole-Tungsten Oxide Nanocomposite Fabrication through Laser-Based Techniques for an Ammonia Sensor: Achieving Room Temperature Operation.

ABSTRACT: A highly sensitive ammonia-gas sensor based on a tungsten trioxide and polypyrrole (WO₃/PPy) nanocomposite synthesized using pulsed-laser deposition (PLD) and matrix-assisted pulsed-laser evaporation (MAPLE) is presented in this study. The WO₃/PPy nanocomposite is prepared through a layer-by-layer alternate deposition of the PPy thin layer on the WO₃ mesoporous layer. Extensive characterization using X-ray diffraction, FTIR and Raman spectroscopy, scanning electron microscopy, atomic force microscopy, and water contact angle are carried out on the as-prepared layers. The gas-sensing properties of the WO₃/PPy nanocomposite layers are systematically investigated upon exposure to ammonia gas. The results demonstrate that the WO₃/PPy nanoc

SUBMITTER: Filipescu M 

PROVIDER: S-EPMC10780584 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature