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Long Y, Peng Z, Guo LY, He X, Zhu M, Yang Z, Liu T. Adsorption Behavior of Dissolved Gas Molecules in Transformer Oil on Rh Modified GeSe Monolayer. ACS OMEGA 2024; 9:7061-7068. [PMID: 38371821 PMCID: PMC10870373 DOI: 10.1021/acsomega.3c09001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 01/13/2024] [Accepted: 01/22/2024] [Indexed: 02/20/2024]
Abstract
Dissolved gas analysis in transformer oil is useful for detecting early transformer failures. The research on gas sensors for monitoring dissolved gas in transformer oil has attracted wide attention from academia and industry. In this study, Rh-doped GeSe monolayers were used as gas sensing materials based on the density functional theory (DFT). The potential of the Rh-GeSe monolayer as a gas sensor was evaluated by calculating the geometric structure, adsorption distance (dsub/gas), binding energy (Eb), adsorption energy (Eads), transfer charge (ΔQ), the density of states (DOS), band structure, electron localization function (ELF), charge difference density (CDD), and sensitivity (S) of Rh-GeSe monolayer with eight gas molecules (SO2, C2H2, NO2, H2, CH4, CO2, H2S, and CO). The results show that the Rh-GeSe monolayer has a prominent response to SO2, C2H2, and NO2 gas molecules and has great potential to become an excellent gas sensor. This study provides a theoretical basis for the application of Rh-GeSe monolayer in the field of gas sensing and provides a new way for the development of other gas sensors.
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Affiliation(s)
- Yunfeng Long
- Yunnan
Key Laboratory of Green Energy, Electric Power Measurement Digitalization,
Control and Protection, Electric Power Research
Instute of Yunnan Power Grid Company, Limited, Kunming 650214, Yunnan, China
| | - Zhaoyu Peng
- Yunnan
Key Laboratory of Green Energy, Electric Power Measurement Digitalization,
Control and Protection, Electric Power Research
Instute of Yunnan Power Grid Company, Limited, Kunming 650214, Yunnan, China
| | - Liang-Yan Guo
- National
Key Laboratory of Power Transmission Equipment Technology, School
of Electrical Engineering, Chongqing University, Chongqing 400044, China
| | - Xiaohui He
- Yunnan
Key Laboratory of Green Energy, Electric Power Measurement Digitalization,
Control and Protection, Electric Power Research
Instute of Yunnan Power Grid Company, Limited, Kunming 650214, Yunnan, China
| | - Mengyao Zhu
- Yunnan
Key Laboratory of Green Energy, Electric Power Measurement Digitalization,
Control and Protection, Electric Power Research
Instute of Yunnan Power Grid Company, Limited, Kunming 650214, Yunnan, China
| | - Zewen Yang
- Yunnan
Key Laboratory of Green Energy, Electric Power Measurement Digitalization,
Control and Protection, Electric Power Research
Instute of Yunnan Power Grid Company, Limited, Kunming 650214, Yunnan, China
| | - Taiwen Liu
- Yunnan
Key Laboratory of Green Energy, Electric Power Measurement Digitalization,
Control and Protection, Electric Power Research
Instute of Yunnan Power Grid Company, Limited, Kunming 650214, Yunnan, China
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Long Y, Xia SY, Guo LY, Tan Y, Huang Z. As-Doped h-BN Monolayer: A High Sensitivity and Short Recovery Time SF 6 Decomposition Gas Sensor. SENSORS 2022; 22:s22134797. [PMID: 35808294 PMCID: PMC9269263 DOI: 10.3390/s22134797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/22/2022] [Accepted: 06/24/2022] [Indexed: 02/07/2023]
Abstract
SF6 is a common insulating medium of gas-insulated switchgear (GIS). However, it is inevitable that SF6 will be decomposed due to partial discharge (PD) in GIS, which will cause hidden dangers to the safe and stable operation of equipment. Based on the DFT method, the two-dimensional nano-composite As-doped h-BN (As-BN) monolayer was proposed. By modeling and calculating, the ability of an As-BN monolayer as a specific sensor for SO2F2 (compared with an H2O adsorption system and CO2 adsorption system) was evaluated by parameters such as the binding energy (Eb), adsorption energy (Eads), transfer charge (ΔQ), geometric structure parameters, the total density of states (TDOS), band structure, charge difference density (CDD), electron localization function (ELF), sensitivity (S), and recovery time (τ). The results showed that an As-BN monolayer showed strong adsorption specificity, high sensitivity, and short recovery time for SO2F2 gas molecules. Therefore, the As-BN monolayer sensor has great application potential in the detection of SF6 decomposition gases.
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Tao LQ, Zou S, Wang G, Peng Z, Zhu C, Sun H. Theoretical analysis of the absorption of CO 2 and CO on pristine and Al-doped C 3B. Phys Chem Chem Phys 2022; 24:27224-27231. [DOI: 10.1039/d2cp04181b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Real-time detection of CO2 and CO is of great importance because CO2 is a major cause of global warming and CO endangers the human nervous and cardiovascular systems.
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Affiliation(s)
- Lu-Qi Tao
- Beijing Engineering Research Center of Industrial Spectrum Imaging, School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Simin Zou
- School of Electrical Engineering and State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing 400044, China
| | - Guanya Wang
- School of Electrical Engineering and State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing 400044, China
| | - Zhirong Peng
- School of Electrical Engineering and State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing 400044, China
| | - Congcong Zhu
- School of Electrical Engineering and State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing 400044, China
| | - Hao Sun
- School of Electrical Engineering and State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing 400044, China
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