Synthesis and characterization of La- and Ce-codoped polycrystal ZnO prepared by hydrothermal method for 1,2-propanediol

La/Ce-codoped ZnO (La/Ce–ZnO)-based gas sensors are successfully prepared by a simple mild hydrothermal method. And the structures, morphologies and sensing properties are examined by XRD, SEM and XPS, respectively. The 1,2-propanediol gas-sensing analysis reveals that the La/Ce–ZnO-based gas sensor...

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Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2019, Vol.125 (1), p.1-9, Article 68
Main Authors: Lu, Wenrui, Zhu, Dachuan
Format: Article
Language:English
Subjects:
Applied physics
Cerium
Characterization and Evaluation of Materials
Condensed Matter Physics
Detection
Gas sensors
Machines
Manufacturing
Materials science
Morphology
Nanotechnology
Optical and Electronic Materials
Physics
Physics and Astronomy
Polycrystals
Processes
Sensors
Surfaces and Interfaces
Thin Films
X ray photoelectron spectroscopy
Zinc oxide
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Summary:La/Ce-codoped ZnO (La/Ce–ZnO)-based gas sensors are successfully prepared by a simple mild hydrothermal method. And the structures, morphologies and sensing properties are examined by XRD, SEM and XPS, respectively. The 1,2-propanediol gas-sensing analysis reveals that the La/Ce–ZnO-based gas sensor displays the highest response compared with La-doped ZnO and Ce-doped ZnO sensors. La/Ce–ZnO-based gas sensor exhibits an excellent response (681) and possesses good response and recovery property of 11 and 45 s to 100 ppm 1,2-propanediol at 240 °C, respectively. The mechanism of gas sensing and enhanced gas response of La/Ce–ZnO is discussed.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-019-2380-8