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Cu (γ = 1-3)-Modified MoS Monolayer as a Gas Sensor for Detecting CFN and Its Decomposition Components. | LitMetric
Perfluorinated isobutyronitrile (CFN) is favored in electrical engineering because it is an environmentally friendly gas-insulating medium with a low greenhouse effect. Unfortunately, under the influence of electricity and over-heating, its decomposition results in the deterioration of its insulating properties, which potentially leads to partial discharge or even gas breakdown. In this paper, the adsorption behavior of CFN gas and its toxic decomposition product, acetonitrile (CN), on MoS surfaces doped with small copper clusters was investigated by calculating the adsorption energy and density of states, etc. The effects of multiple initial adsorption positions as well as externally applied electric fields were also taken into account. The results depict that the maximum adsorption energy of CFN on the Cu (γ = 1-3)-MoS surface gradually decreases with the increase in . The Cu-modified MoS is most suitable for use as a resistive-based gas-sensitive sensor substrate. This paper provides the theoretical foundation for the maintenance of future power equipment with environmentally friendly insulating gas.
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