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- W4378839594 endingPage "157630" @default.
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- W4378839594 abstract "SF6 gas will decompose four characteristic decomposition products (H2S, SO2, SO2F2 and SOF2) when an insulation failure occurs early in SF6 gas-insulated equipment. By building gas-sensitive sensors into insulation devices it is possible to detect the characteristic gases of insulation faults. In this paper, we use Graphene which is available with good gas sensitivity, as a substrate and then improve the gas response of Graphene by doping with TiO2 clusters. The adsorption mechanism of (TiO2)n-Graphene (n=1∼4) on four characteristic decomposition gases is firstly analyzed based on first principles, and then verifies experimentally. (TiO2)n-Graphene (n=1∼4) shows the largest change in Eg after adsorption of SO2 gas with 61.70%, 1.07%, 23.19% and 64.04%, respectively. The SEM characterization shows that Graphene has an obvious lamellar structure, and TiO2 nanoparticles are mainly distributed on the outer wall of Graphene, which has a large curvature and strong surface activity. The gas-sensitive response values of the (TiO2)n-Graphene (n=1∼4) sensor for different gases at the same gas concentration are ranked as SO2>H2S>SO2F2>SOF2. The results show that TiO2 cluster-doped Graphene is a potential gas-sensitive sensing material that can be a new material for online monitoring of faulty gas content in SF6 gas-insulated equipment." @default.
- W4378839594 created "2023-06-01" @default.
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- W4378839594 date "2023-10-01" @default.
- W4378839594 modified "2023-10-14" @default.
- W4378839594 title "Investigating the Gas-sensitive Response of Graphene doped by Different TiO2 Concentrations towards SF6 Decomposition Products" @default.
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- W4378839594 doi "https://doi.org/10.1016/j.apsusc.2023.157630" @default.
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