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- W4289704788 abstract "In this work, zinc oxide (ZnO), nickel (Ni) and aluminum (Al)‐doped ZnO nanoparticles are synthesized via an ultrasound‐assisted sol–gel technique. X‐ray diffraction analysis reveals a correlation between structural parameters (lattice parameters, crystallite size, dislocation density and micro‐strain) and the dopant ions incorporation. Scanning electron microscopy studies show changes in morphology in doped samples derived from the effect of restriction on the growth dynamics. A growth mechanism is proposed in order to explain the properties of ZnO‐based sensors. Gas sensing tests are carried out, delivering the best results as follows: an 89% sensing response at 500 ppm of carbon dioxide (CO 2 ), 0.54 MΩ s −1 of sensitivity, and 52/48 s for average response and recovery times respectively, in the Ni‐doped ZnO sample. Additionally, selectivity evaluations for all samples are also performed. By comparing the obtained structural and morphological characteristics with the gas sensing properties of the samples, Ni‐doped ZnO samples have optimal characteristics for CO 2 detection due to the high surface area and abundant oxygen vacancies resulting from the Ni incorporation. The gas sensing mechanism of each sample is also reported and discussed in detail." @default.
- W4289704788 created "2022-08-04" @default.
- W4289704788 creator A5003307074 @default.
- W4289704788 creator A5042543263 @default.
- W4289704788 creator A5073042010 @default.
- W4289704788 creator A5076337339 @default.
- W4289704788 creator A5077056286 @default.
- W4289704788 date "2022-08-18" @default.
- W4289704788 modified "2023-10-18" @default.
- W4289704788 title "Carbon Dioxide Detectors based on Al‐ and Ni‐Doped ZnO" @default.
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- W4289704788 doi "https://doi.org/10.1002/pssa.202200247" @default.
- W4289704788 hasPublicationYear "2022" @default.
- W4289704788 type Work @default.