Abstract
Polycrystalline Pd/SnO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> nanowires have been fabricated using ZnO-nanowire templates by the combination of thermal evaporation, pulsed-laser deposition, and dc sputtering. The rutile SnO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> nanocrystals were grown on the ZnO nanowire with Volmer-Weber mode due to the large lattice mismatch. The discrete Pd nanocrystals were also successfully deposited onto the nanostructures, which were identified by high-angle annual dark field scanning transmission electron microscopy. The 1-D polycrystalline SnO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> coatings with catalytically active Pd layer can effectively detect air-diluted H <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> S. The sensing behaviors can be understood by a Langmuir isotherm absorption model. The fabrication method provides a general strategy to prepare 1-D metal-oxide conductometric gas sensors.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call