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- W3119477682 abstract "Abstract This paper proposes an effective strategy of material system optimization to improve acetone gas sensing performance based on hydrothermally processed transition metal (Fe, Co or Ni)-doped WO 3 materials. A detailed comparison of the capability of pure WO 3 and X:WO 3 (X = Fe, Co, Ni) to sense acetone gas at room temperature was performed. It was found that the sensitivity of Ni:WO 3 nanoflowers to acetone was much higher than that of pure WO 3 , Fe:WO 3 and Co:WO 3 under white light irradiation. To obtain a highly sensitive acetone gas sensor, the molar doping ratio of Ni to WO 3 was further optimized. It was found that 3%Ni:WO 3 had the highest response–recovery speed and the best target gas selectivity. Acetone with a concentration as low as 2 ppm can be detected at room temperature (20 °C). The sensitivity enhancement mechanism of the Ni:WO 3 gas sensor is also discussed. It is expected that under white light irradiation the proposed Ni-doped WO 3 can be used as a highly sensitive and selective acetone gas sensor at room temperature." @default.
- W3119477682 created "2021-01-18" @default.
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- W3119477682 date "2021-02-01" @default.
- W3119477682 modified "2023-10-01" @default.
- W3119477682 title "Improved acetone gas sensing performance based on optimization of a transition metal doped WO<sub>3</sub> system at room temperature" @default.
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- W3119477682 doi "https://doi.org/10.1088/1361-6463/abd8f0" @default.
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