Detection of SF6 Decomposition Products Using MoS2 Nanoflakes: Gas Sensing Properties Combined With Mechanism Study

被引：0
|
作者：
Chen D. [1 ]
Tang J. [1 ]
Zhang X. [2 ]
Wu P. [1 ]
Li Y. [1 ]
Liu H. [3 ]
机构：
[1] School of Electrical Engineering and Automation, Wuhan University, Hubei Province, Wuhan
[2] School of Electrical and Electronic Engineering, Hubei University of Technology, Hubei Province, Wuhan
[3] Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Hubei Province, Wuhan
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2022年 / 42卷 / 22期
基金：
中国国家自然科学基金;
关键词：
density functional theory; gas sensor; MoS[!sub]2[!/sub] nanosheet; SF[!sub]6[!/sub] decomposition products;
D O I：
10.13334/j.0258-8013.pcsee.212105
中图分类号：
学科分类号：
摘要：
MoS2 nanosheet was synthesized by combining the hydrothermal method and the high temperature solid state method. Characterized by field emission scanning electron microscope (FESEM), X-ray Diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Raman spectrum, it can obtain the micromorphology, crystal structure, elemental composition, and vibration mode. The resistance-type gas sensor was fabricated using silk-screen print, and MoS2 nanosheet was uniformly coated on interdigital electrode. The sensing properties of four typical SF6 decomposition products (SO2, SOF2, SO2F2 and H2S) were measured. The first-principles density functional theory was adopted to analyze the physical and chemical properties of microstructure of MoS2, and the adsorption of SF6 decomposition products on edge structures of MoS2 was investigated, including adsorption energy, electron transfer, adsorption distance, and the ratio of van der Waals force. The results show that the best working temperatures of MoS2 to four types of SF6 decomposition products are all 200℃. At this temperature, the sensor exhibits high linearity from 0~50x10-6 (R2≥0.959), and the sensitivity is H2S<SO2<SOF2<SO2F2 while the limit of detection is 531x10-9, 622x10-9, 1.55x10-6, and 2.89x10-6, respectively. The theoretical results show that the adsorptions on edge structures of MoS2 dominate the gas sensing response, and the different sensitivity is derived from different chemical interaction energies and the charge transfer between the adsorbed molecule and the edge structure of MoS2. This study can provide experimental and theoretical support for detecting SF6 decomposition products using transition metal dichalcogenides (TMDCs). ©2022 Chin.Soc.for Elec.Eng.
引用
收藏
页码：8390 / 8404
页数：14
相关论文
共 41 条
  • [1] TANG Ju, Fan LIU, ZHANG Xiaoxing, Partial discharge recognition through an analysis of SF<sub>6</sub> decomposition products part 1 ： decomposition characteristics of SF<sub>6</sub> under four different partial discharges[J], IEEE Transactions on Dielectrics and Electrical Insulation, 19, 1, pp. 29-36, (2012)
  • [2] CHU F Y．, SF<sub>6</sub> decomposition in gas-insulated equipment [J], IEEE Transactions on Electrical Insulation, EI-21, 5, pp. 693-725, (1986)
  • [3] TANG Ju, YANG Dong, ZENG Fuping, Research status of SF<sub>6</sub> insulation equipment fault diagnosis method and technology based on decomposed components analysis[J], Transactions of China Electrotechnical Society, 31, 20, pp. 41-54, (2016)
  • [4] JI Shengchang, ZHONG Lipeng, LIU Kai, Research status and development of SF<sub>6</sub> decomposition components analysis under discharge and its application[J], Proceedings of the CSEE, 35, 9, pp. 2318-2332, (2015)
  • [5] RIUS F X．, Gas sensors based on nanostructured materials[J], Analyst, 132, 11, pp. 1083-1099, (2007)
  • [6] DING Weidong, HAYASHI R, OCHI K, Analysis of PD-generated SF<sub>6</sub> decomposition gases adsorbed on carbon nanotubes[J], IEEE Transactions on Dielectrics and Electrical Insulation, 13, 6, pp. 1200-1207, (2006)
  • [7] ZHANG Xiaoxing, FANG Jiani, Review：adsorption principle and application of carbon nanotubes to SF<sub>6</sub> decomposition components[J], Proceedings of the CSEE, 38, 16, pp. 4926-4941, (2018)
  • [8] Hongfa DAI, Peng XIAO, Qing LOU, Application of SnO<sub>2</sub>/MWCNTs nanocomposite for SF<sub>6</sub> decomposition gas sensor[J], Physica Status Solidi A, 208, 7, pp. 1714-1717, (2011)
  • [9] Yingang GUI, Xiaoxing ZHANG, Peigang LV, Ni-CNT chemical sensor for SF<sub>6</sub> decomposition components detection ： a combined experimental and theoretical study[J], Sensors, 18, 10, (2018)
  • [10] ZHANG Xiaoxing, YU Lei, WU Xiaoqing, Experimental sensing and density functional theory study of H<sub>2</sub>S and SOF<sub>2</sub> adsorption on Au-modified graphene[J], Advanced Science, 2, 11, (2015)
12345