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- W4220967800 abstract "• Ionic liquid ([C 16 Mim] Cl) were selected as the morphology inducer and dopant to fabricate Cl uniform doped flower-like In 2 O 3 materials. • Cl doping improves the photo-generated charge separation efficiency of the material under lower light intensity. • The adsorption process and mechanism for NO 2 gas have been studied in detail under UV illumination. As a poisonous and harmful gas, NO 2 , is not only harmful to the environment, but also detrimental to human health. In this work, ionic liquids (1-hexadecyl-3-methylimidazolium chloride [C 16 Mim] Cl) were selected as dopants to prepare flower-like Cl uniform doped In 2 O 3 nanomaterials. The material exhibits excellent sensing performance to NO 2 under UV light because of Cl uniform doped. Compared with the experiment in dark conditions, the response value of the sensor to 5 ppm NO 2 under UV light is approximately two times higher (S = 425.9) and presents a faster recovery rate (69 s). Chlorine doping shifts the valence band of the material upwards, facilitating the photogenerated electron leap under UV illumination. Moreover, the in-situ DRIFT under UV light were employed to verify the interaction between the materials and NO 2 gas in N 2 , air and O 2 atmospheres respectively. It was found that the presence of oxygen in the environment affects the adsorption of NO 2 on the surface of the Cl doped In 2 O 3 material. This work is of great significance to the sensing mechanism investigation of photo-activated NO 2 gas sensors." @default.
- W4220967800 created "2022-04-03" @default.
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- W4220967800 date "2022-07-01" @default.
- W4220967800 modified "2023-10-12" @default.
- W4220967800 title "Light-enhanced NO2 sensing performance and sensing mechanism of flower-like Cl uniformly doped In2O3" @default.
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- W4220967800 doi "https://doi.org/10.1016/j.apsusc.2022.153033" @default.
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