@article{oai:nagasaki-u.repo.nii.ac.jp:00027026,
 author = {HYODO, Takeo and IWANAGA, Azusa and ISHIDA, Keijiro and KAMADA, Kai and UEDA, Taro and SHIMIZU, Yasuhiro},
 issue = {11},
 journal = {Journal of the Ceramic Society of Japan},
 month = {Nov},
 note = {Fundamental gas-sensing properties of porous (pr-)In2O3 powders loaded with and without 0.5 mass % noble metal (pr-0.5N/In2O3 and pr-In2O3, respectively, N: noble metal (Au or Pd)) to NO2, H2, and ethanol balanced with dry air were investigated at 30 °C under UV-light irradiation (main wavelength: 365 nm). The spherical pr-0.5N/In2O3 and pr-In2O3 powders were prepared by ultrasonic-spray pyrolysis employing polymethylmethacrylate microspheres with a diameter of ca. 70 nm, which were synthesized by ultrasonic-assisted emulsion polymerization. The Au loading largely improved the NO2 response of the pr-In2O3 sensor, a ratio of the resistance in NO2 to that in air, especially under weak UV-light irradiation, because of the relatively large resistance in air. On the other hand, the Pd loading efficiently increased the difference in the conductance of the pr-In2O3 sensor between in NO2 and in air under the whole UV-light irradiation range. The UV-light irradiation is effective in improving the NO2-sensing properties of these sensors at room temperature, but the sensing performance was a little inferior to that operated at elevated temperatures under no UV-light irradiation. These sensors also responded to reducing gases, H2 and ethanol, under UV-light irradiation, and the responses to ethanol were much larger than those to H2. However, the responses to both the gases were much smaller than that to NO2., Journal of the Ceramic Society of Japan, 129(11), pp. 676-682; 2021},
 pages = {676--682},
 title = {Effects of noble-metal loading and ultraviolet-light irradiation on gas-sensing properties of porous indium oxide films at room temperature},
 volume = {129},
 year = {2021}
}