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Content Provider | IET Digital Library |
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Author | Gui, Yingang Shi, Jinzhi Yang, Pingan Li, Tao Tang, Chao Xu, Lingna |
Abstract | In the long-running of sulphur hexafluoride (SF6)-insulated equipment, SF6 inevitably decomposes to various decomposition products under electric discharge, including SOF2 and SO2F2. In this work, single Pt modified molybdenum disulphide (Pt-MoS2) monolayer, and double Pt modified molybdenum disulphide (Pt2-MoS2) monolayer are proposed to analyse its adsorption and sensing properties to SOF2 and SO2F2 with single and double gas molecules adsorption based on density functional theory. The adsorption energy, density of states, and molecular orbit theory are employed to analyse the adsorption and sensing mechanism. It turns out that the Pt-MoS2 and Pt2-MoS2 present outstanding adsorption capacity to gas molecules. Specifically, double SOF2 adsorption on Pt2-MoS2 shows the best adsorption performance, and the conductivity of the adsorption system changes the most in the adsorption process. Overall, both Pt-MoS2 and Pt2-MoS2 perform as an excellent gas sensor. This study provides a theoretical basis to develop Pt-MoS2 and Pt2-MoS2 based materials for SOF2 and SO2F2 detection in SF6-insulated equipment. |
Starting Page | 454 |
Ending Page | 462 |
Page Count | 9 |
Volume Number | 5 |
e-ISSN | 23977264 |
Issue Number | Issue 4, Aug (2020) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/hve/5/4 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/hve.2019.0170 |
Journal | High Voltage |
Publisher | The Institution of Engineering and Technology CEPRI |
Publisher Date | 2019-09-16 |
Access Restriction | Open |
Rights License | Creative Commons Attribution-Non Commercial-No Derivs License (http://creativecommons.org/licenses/by-nc-nd/3.0/) |
Subject Keyword | Adsorption Adsorption And Desorption Kinetics Adsorption Energy Adsorption Performance Adsorption Process Adsorption System Chemical Sensor Conductivity Decomposition Products Density Functional Theory Density of States DFT Double Gas Molecules Adsorption Double Pt Modified Molybdenum Disulphide Monolayer Electric Discharge Evaporation And Condensation Gas Sensing Gas Sensor Gas Sonsor Molecular Orbit Theory Molybdenum Compound MonoLayer MonoLayer And Langmuir-Blodgett Film Platinum Pt-MoS2 Pt2-MoS2 Sensing Property Single Gas Molecule Adsorption Single Pt Modified Molybdenum Disulphide Monolayer SO2F2 SOF2 Sorption And Accommodation Coefficient Sulphur Compound Sulphur Hexafluoride-insulated Equipment Surface Chemistry |
Content Type | Text |
Resource Type | Article |
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