Enhanced Photo-Assisted Acetone Gas Sensor and Efficient Photocatalytic Degradation Using Fe-Doped Hexagonal and Monoclinic WO₃ Phase-Junction.

ABSTRACT: The development of WO₃-based gas sensors for analysis of acetone in exhaled breath is significant for noninvasive diagnosis of diabetes. A series of Fe-doped hexagonal and monoclinic WO₃ phase-junction (Fe-h/m-WO₃) sensors were synthesized by the hydrothermal calcination method, and the influences of operating temperature and light irradiation on the response were studied. Under light emitting diode (LED) illumination, Fe-h/m-WO₃ exhibited higher responses to acetone than those of the undoped WO₃-based sensors at an operating temperature of 260 °C with 90% relative humidity, and good linearity between response and acetone concentration (0.5 to 2.5 ppm) was achieved under the 90% relative humidity condition. Meanwhile, the

SUBMITTER: Wang JC 

PROVIDER: S-EPMC7075328 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature