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- W2137254762 abstract "Nano-SnO 2 powder was prepared by the hydrothermal method in this paper. X-ray powder diffraction (XRD) and scanning electron microscopy (SEM) were used to characterize the composition of the crystalline phase and the morphology of the prepared gas-sensitive materials, respectively. In particular, the study focused on the sensing behaviors of nano-SnO 2 -based sensor towards power transformer fault gases such as hydrogen and carbon monoxide. The optimum working temperature for hydrogen and carbon monoxide is about 400 ∘ C and 360 ∘ C, separately. Further investigations into the adsorption process of gas molecule on SnO 2 (110) surface based on the first principles were conducted. The calculations indicated that 1 σ orbits of H 2 split into several new electronic peaks and 5 σ orbits of CO almost degenerated completely in the adsorption process, which promoted charge transfer between gas molecule and SnO 2 (110) surface. It provides a qualitative explanation for the prepared nano-SnO 2 -based sensor exhibiting different gas sensing properties towards H 2 and CO." @default.
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- W2137254762 date "2012-01-01" @default.
- W2137254762 modified "2023-10-11" @default.
- W2137254762 title "Gas Sensing Properties and Mechanism of Nano-SnO<sub>2</sub>-Based Sensor for Hydrogen and Carbon Monoxide" @default.
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- W2137254762 doi "https://doi.org/10.1155/2012/612420" @default.
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