Synthesis of Hollow Nanofibers and Application on Detecting SF6 Decomposing Products

Lu, Zhaorui; Zhou, Qu; Wei, Zhijie; Xu, Lingna; Peng, Shudi; Zeng, Wen

doi:10.3389/fmats.2019.00183

Cited by 12 publications

(7 citation statements)

References 62 publications

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“…Sulfur hexafluoride (SF 6 )-Is a colorless, odorless, transparent and not flammable gas. It is not considered as toxic gas and it is used in industry as electrical insulator because of its capability of extinguishing electrical arcs in high tension [126]. However, it is one of the six gases responsible of greenhouse effects covered by the Kyoto Protocol.…”

Section: Target Gasesmentioning

confidence: 99%

Year 2020: A Snapshot of the Last Progress in Flexible Printed Gas Sensors

Fioravanti

Carotta

2020

Applied Sciences

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A review of recent advances in flexible printed gas sensors is presented. During the last years, flexible electronics has started to offer new opportunities in terms of sensors features and their possible application fields. The advent of this technology has made sensors low-cost, thin, with a large sensing area, lightweight, wearable, flexible, and transparent. Such new characteristics have led to the development of new gas sensor devices. The paper makes some statistical remarks about the research and market of the sensors and makes a shot of the printing technologies, the flexible organic substrates, the functional materials, and the target gases related to the specific application areas. The conclusion is a short notice on perspectives in the field.

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Section: Target Gasesmentioning

confidence: 99%

Year 2020: A Snapshot of the Last Progress in Flexible Printed Gas Sensors

Fioravanti

Carotta

2020

Applied Sciences

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“…Nowadays, SF 6 is extensively applied to gas-insulated switchgears (GIS) because of its excellent insulation and arc extinguishing properties [ 1 , 2 , 3 , 4 ]. In cases where the high-voltage insulation equipment has been working for a long time, partial overheating and discharge is very likely to occur, leading to the decomposition of SF 6 .…”

Section: Introductionmentioning

confidence: 99%

First-Principles Study of Au-Doped InN Monolayer as Adsorbent and Gas Sensing Material for SF6 Decomposed Species

2021

Self Cite

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As an insulating medium, sulfur hexafluoride (SF6) is extensively applied to electrical insulation equipment to ensure its normal operation. However, both partial discharge and overheating may cause SF6 to decompose, and then the insulation strength of electrical equipment will be reduced. The adsorption properties and sensing mechanisms of four SF6 decomposed components (HF, SO2, SOF2 and SO2F2) upon an Au-modified InN (Au-InN) monolayer were studied in this work based on first-principles theory. Meanwhile, the adsorption energy (Ead), charge transfer (QT), deformation charge density (DCD), density of states (DOS), frontier molecular orbital and recovery property were calculated. It can be observed that the structures of the SO2, SOF2 and SO2F2 molecules changed significantly after being adsorbed. Meanwhile, the Ead and QT of these three adsorption systems are relatively large, while that of the HF adsorption system is the opposite. These phenomena indicate that Au-InN monolayer has strong adsorption capacity for SO2, SOF2 and SO2F2, and the adsorption can be identified as chemisorption. In addition, through the analysis of frontier molecular orbital, it is found that the conductivity of Au-InN changed significantly after adsorbing SO2, SOF2 and SO2F2. Combined with the analysis of the recovery properties, since the recovery time of SO2 and SO2F2 removal from Au-InN monolayer is still very long at 418 K, Au-InN is more suitable as a scavenger for these two gases rather than as a gas sensor. Since the recovery time of the SOF2 adsorption system is short at 418 K, and the conductivity of the system before and after adsorption changes significantly, Au-InN is an ideal SOF2 gas-sensing material. These results show that Au-InN has broad application prospects as an SO2, SOF2 and SO2F2 scavenger and as a resistive SOF2 sensor, which is of extraordinary meaning to ensure the safe operation of power systems. Our calculations can offer a theoretical basis for further exploration of gas adsorbent and resistive sensors prepared by Au-InN.

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“…Thus, several studies have attempted to synthesize morphologies with a high surface area to increase the sensing performance of gas sensors. In addition, a porous morphology [ 17 ] and hollow structures [ 18 , 19 ] can be other useful techniques to increase the gas sensing properties. Therefore, metal oxide NFs are highly popular for sensing studies because of a very high surface area results from the one-dimensional morphology and the presence of nanograins on their surfaces, as shown in Figure 1 .…”

Section: Introductionmentioning

confidence: 99%

Reduced Graphene Oxide (rGO)-Loaded Metal-Oxide Nanofiber Gas Sensors: An Overview

Majhi

Mirzaei

Kim

et al. 2021

Sensors

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Reduced graphene oxide (rGO) is a reduced form of graphene oxide used extensively in gas sensing applications. On the other hand, in its pristine form, graphene has shortages and is generally utilized in combination with other metal oxides to improve gas sensing capabilities. There are different ways of adding rGO to different metal oxides with various morphologies. This study focuses on rGO-loaded metal oxide nanofiber (NF) synthesized using an electrospinning method. Different amounts of rGO were added to the metal oxide precursors, and after electrospinning, the gas response is enhanced through different sensing mechanisms. This review paper discusses rGO-loaded metal oxide NFs gas sensors.

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Synthesis of Hollow Nanofibers and Application on Detecting SF6 Decomposing Products

Cited by 12 publications

References 62 publications

Year 2020: A Snapshot of the Last Progress in Flexible Printed Gas Sensors

Year 2020: A Snapshot of the Last Progress in Flexible Printed Gas Sensors

First-Principles Study of Au-Doped InN Monolayer as Adsorbent and Gas Sensing Material for SF6 Decomposed Species

Reduced Graphene Oxide (rGO)-Loaded Metal-Oxide Nanofiber Gas Sensors: An Overview

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