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- W2375395861 abstract "Yb2O3-doped SnO2 nanopowder containing 0~1.0% (mass fraction) of Yb2O3 was prepared from SnCl4·5H2O and citric acid by the sol-gel method, and its microstructure was characterized with XRD and TEM. Gas sensors were fabricated from the prepared nanopowder, and the gas sensing property of them to NO2, Cl2, H2, H2S, alcohol and formaldehyde was measured via the static volumetric method. The results indicate that the particle size of obtained nanopowder is small and constant. For the gas sensor fabricated from the nanopowder containing 0.4% of Yb2O3 under a sintering temperature of 600 ℃, its maximum sensitivity to NO2 (volume fraction: 30×10–6) reaches 18 224 at a working temperautue of 100 ℃. Moreover, such sensor exhibits superior response-recovery characteristics, and its response time and recovery time are 20s and 15s, respectively." @default.
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- W2375395861 date "2010-01-01" @default.
- W2375395861 modified "2023-09-26" @default.
- W2375395861 title "Preparation of Yb_2O_3-doped SnO_2 nanopowder by sol-gel method and its gas sensing properties study" @default.
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