InP₃ Monolayer as a Promising 2D Sensing Material in SF₆ Insulation Devices

Abstract

In this letter, we perform a first-principles study on the adsorption performance of the InP3 monolayer upon three SF6 decomposed species, including SO2, SOF2, and SO2F2, to investigate its potential as a resistance-type, optical or field-effect transistor gas sensor. Results indicate that the InP3 monolayer exhibits strong chemisorption upon SO2 but weak physisorption upon SO2F2. The most admirable adsorption behavior is upon SOF2, which provides a favorable sensing response (−19.4%) and recovery property (10.4 s) at room temperature as a resistance-type gas sensor. A high response of 180.7% upon SO2 and a poor one of −1.9% upon SO2F2 are also identified, which reveals the feasibility of the InP3 monolayer as a resistance-type sensor for SO2 detection with recycle use via a heating technique to clean the surface. Moreover, the InP3 monolayer is a promising optical sensor for SO2 detection due to the obvious changes in adsorption peaks within the range of ultraviolet and is a desirable field-effect transistor sensor for selective and sensitive detection of SO2 and SOF2 given the evident changes of Q T and E g under the applied electric field.

Monitoring and Leak Diagnostics of Sulfur Hexafluoride and Decomposition Gases from Power Equipment for the Reliability and Safety of Power Grid Operation

“…In addition to the above, many high-frequency low-dimensional materials have emerged for gas-sensitive materials, such as monolayer tellurium [93], Ru-InN monolayer [94], phosphorene [95], InP3 monolayer [96], monolayer SbP [97], stone-Wales (SW) defective Sb [98], and so on. The band gap, adsorption energy, gas charge transfer, the closest atomic distance to the gas molecules, donor/acceptor characteristics of gas molecules, and band gap after adsorption of gas molecules have been compared in details, as shown in Table 3.…”

Plasma Processing and Treatment of 2D Transition Metal Dichalcogenides: Tuning Properties and Defect Engineering

“…The stability conditions of gray-shaded 2D materials are not yet fully explored. Data extracted from refs , , and − .…”

Physisorption Behaviors of Organochlorine Pesticides on the InP3 Monolayer from Theoretical Insight

“…Therefore, it is proven that InP 3 exhibits high performance in sensitive detection and adsorption of various gas molecules. The InP 3 surface has been proposed as a gas sensor to detect and adsorb gases, including H 2 , NO 2 , CH 4 , HCHO, SO 2 , SOF 2 , and SO 2 F 2 . , …”

“…The InP 3 surface has been proposed as a gas sensor to detect and adsorb gases, including H 2 , 34 NO 2 , 35 CH 4 , 36 HCHO, 37 SO 2 , SOF 2 , and SO 2 F 2 . 32,38 From the chemical structures of OCPs, the existence of Cl atoms and aromatic rings makes them exhibit a high electron induction effect. 10 Therefore, based on the advantages of a stable honeycomb structure and superior electronic properties, we assume that the 2D-InP 3 nanosheet can be a sensing material of SPME to realize the sensitive detection of OCPs.…”

“…The InP 3 surface has been proposed as a gas sensor to detect and adsorb gases, including H 2 , 34 NO 2 , 35 CH 4 , 36 HCHO, 37 SO 2 , SOF 2 , and SO 2 F 2 . 32 , 38 …”