TY - JOUR
T1 - Effect of Pd-decoration on the sensing properties of ZnO nanostructures
AU - Dilova, T.
AU - Atanasova, G.
AU - Og. Dikovska, A.
AU - Avdeev, G.
AU - Machida, M.
AU - Terakawa, M.
AU - Stefanov, P.
AU - Nedyalkov, N. N.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - In this work, we present fabrication and studies of pure and Pd-decorated ZnO nanostructures on Ag-coated substrates in view of gas-sensing application. The sensor elements consist of a dense structure of ZnO nanobelts. The chemical composition of the surface and gas-sensing properties of pure and Pd-doped nanostructures were studied and compared. On the surface of the Pd-decorated ZnO samples, the presence was found of Pd and Pd-Ag clusters, as well as isolated Pd2+ ions were incorporated into the ZnO lattice. The Pd-ZnO sensor element showed a better response to CO, NH3, and acetone compared to the pure ZnO sample. The Pd-ZnO sample exhibited its highest response to exposure to acetone at room temperature. We associate the improvement of sensing performance of the Pd-decorated ZnO nanostructures with the increased number of adsorption centers on the surface due to the Pd nanoparticles.
AB - In this work, we present fabrication and studies of pure and Pd-decorated ZnO nanostructures on Ag-coated substrates in view of gas-sensing application. The sensor elements consist of a dense structure of ZnO nanobelts. The chemical composition of the surface and gas-sensing properties of pure and Pd-doped nanostructures were studied and compared. On the surface of the Pd-decorated ZnO samples, the presence was found of Pd and Pd-Ag clusters, as well as isolated Pd2+ ions were incorporated into the ZnO lattice. The Pd-ZnO sensor element showed a better response to CO, NH3, and acetone compared to the pure ZnO sample. The Pd-ZnO sample exhibited its highest response to exposure to acetone at room temperature. We associate the improvement of sensing performance of the Pd-decorated ZnO nanostructures with the increased number of adsorption centers on the surface due to the Pd nanoparticles.
KW - Acetone
KW - Gas sensors
KW - Palladium nanoparticles
KW - Pulsed laser deposition
KW - Zinc oxide nanostructures
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U2 - 10.1016/j.tsf.2019.137693
DO - 10.1016/j.tsf.2019.137693
M3 - Article
AN - SCOPUS:85075485345
VL - 693
JO - Thin Solid Films
JF - Thin Solid Films
SN - 0040-6090
M1 - 137693
ER -