Adsorption properties of CuO/ZnO modified HfSe2 monolayer upon SF6 decomposition gases (H2S, SO2, SOF2 and SO2F2)

Zeng, Xinya; Jiang, Li; Pang, Siliang; Hao, Jianling; Gui, Yingang

doi:10.1016/j.colsurfa.2023.132562

Cited by 9 publications

(3 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A direct comparison with sensing devices relying on chemical principles (cf. [6][7][8][9][10][11][12][13][14][15]) is difficult because these studies investigated the sensing ability of different materials but did not yet set up sensor devices. The next steps in our sensor development include improvements in sensor integration and the testing of the sensor systems in field applications, e.g., in freight containers.…”

Section: Discussionmentioning

confidence: 99%

“…A large variety of sensors has been reported in recent years. Many of them are chemical sensors based on different material complexes, e.g., Mo-, W-, Hf, or Co-based [6][7][8][9][10], NiO-or TiO-based [11][12][13], or they implement transition metals [14,15]. Generally, chemical sensors are designed to sense the target gas in low concentration ranges, yet the material systems often suffer from cross-sensitivities to other gases and do not have sufficient long-term stability.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Detection of SO2F2 Using a Photoacoustic Two-Chamber Approach

Yassine,

Weber,

Eberhardt

et al. 2023

Sensors

View full text Add to dashboard Cite

The wide use of sulfuryl difluoride (SO2F2) for termite control in buildings, warehouses and shipping containers requires the implementation of suitable sensors for reliable detection. SO2F2 is highly toxic to humans and the environment, and moreover, it is a potent greenhouse gas. We developed two photoacoustic two-chamber sensors with the aim to detect two different concentration ranges, 0–1 vol.-% SO2F2 and 0–100 ppm SO2F2, so that different applications can be targeted: the sensor for high concentrations for the effective treatment of buildings, containers, etc., and the sensor for low concentrations as personal safety device. Photoacoustic detectors were designed, fabricated, and then filled with either pure SO2F2 or pure substituent gas, the refrigerant R227ea, to detect SO2F2. Absorption cells with optical path lengths of 50 mm and 1.6 m were built for both concentration ranges. The sensitivity to SO2F2 as well as cross-sensitivities to CO2 and H2O were measured. The results show that concentrations below 1 ppm SO2F2 can be reliably detected, and possible cross-sensitivities can be effectively compensated.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Detection of SO2F2 Using a Photoacoustic Two-Chamber Approach

Yassine,

Weber,

Eberhardt

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…SF 6 insulating gas is extensively employed in high-voltage and extra-high-voltage power system equipment for its outstanding insulation capabilities and arc-quenching properties. − Nonetheless, elevated temperatures and localized discharges within gas-insulated equipment may trigger the decomposition of SF 6 into H 2 S, SO 2 , SOF 2 , and SO 2 F 2 . − The oxygen atoms in SO 2 , SOF 2 , and SO 2 F 2 mainly come from oxygen and water. Previous studies have indicated that the proportion of oxygen atoms provided by oxygen and water varies under different fault conditions. − The increase of SF 6 decomposition gases significantly reduces the insulation performance of equipment, exacerbates insulation deterioration, and poses a serious threat to the safety of power systems.…”

Section: Introductionmentioning

confidence: 99%

First-Principles Investigation of Transition Metal (Co, Rh, and Ir)-Modified WS₂ Monolayer Membranes: Adsorption and Detection of SF₆ Decomposition Gases

Zhang,

Zhou,

Jiang

et al. 2024

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

At high temperatures, the rapid and effective detection of SF 6 decomposition gas is a major challenge. Therefore, online detection of SF 6 decomposition gas at high temperatures for Gas Insulated Switchgear fault diagnosis is necessary. In this work, first-principles calculations are used to examine the adsorption and sensing properties of pristine WS 2 and transition metal Co, Rh, and Ir-modified WS 2 toward H 2 S, SO 2 , SOF 2 , and SO 2 F 2 . Our study delved into the adsorption energy and mechanisms of each system, exploring various aspects including adsorption energy, band gap, electron density, frontier orbital theory, conductivity, and recovery time. The findings indicate that the transition metal Co, Rh, and Irmodified WS 2 surface exhibits excellent adsorption capabilities for the decomposed gases. Co-WS 2 has good sensing performance for H 2 S, SO 2 , and SOF 2 and can achieve faster desorption for these three decomposed gases at high temperatures (598 K). SO 2 F 2 can be desorbed rapidly (0.65 s) from the surface of Rh-WS 2 at room temperature, and Rh-WS 2 has good selectivity for SO 2 F 2 . Interestingly, Ir-WS 2 remains difficult to desorb even at high temperatures for H 2 S (−2.642 eV), SO 2 (−2.260 eV), SOF 2 (−1.945 eV), and SO 2 F 2 (−2.841 eV) and can be used as a scavenger for these four gases. Therefore, the simulation experiments in this study aim to investigate the advantages of transition metal Co, Rh, and Ir-modified WS 2 for detecting SF 6 decomposition gases.

show abstract

DFT insights into the TM(Cu, Ni, Ag) and TMO(CuO, NiO, Ag2O) modified HfSe2 for detecting PD fault gases

Bi,

Xie,

et al. 2024

Computational and Theoretical Chemistry

View full text Add to dashboard Cite

Adsorption properties of CuO/ZnO modified HfSe2 monolayer upon SF6 decomposition gases (H2S, SO2, SOF2 and SO2F2)

Cited by 9 publications

References 44 publications

Detection of SO2F2 Using a Photoacoustic Two-Chamber Approach

Detection of SO2F2 Using a Photoacoustic Two-Chamber Approach

First-Principles Investigation of Transition Metal (Co, Rh, and Ir)-Modified WS₂ Monolayer Membranes: Adsorption and Detection of SF₆ Decomposition Gases

DFT insights into the TM(Cu, Ni, Ag) and TMO(CuO, NiO, Ag2O) modified HfSe2 for detecting PD fault gases

Contact Info

Product

Resources

About

Adsorption properties of CuO/ZnO modified HfSe2 monolayer upon SF6 decomposition gases (H2S, SO2, SOF2 and SO2F2)

Cited by 9 publications

References 44 publications

Detection of SO2F2 Using a Photoacoustic Two-Chamber Approach

Detection of SO2F2 Using a Photoacoustic Two-Chamber Approach

First-Principles Investigation of Transition Metal (Co, Rh, and Ir)-Modified WS2 Monolayer Membranes: Adsorption and Detection of SF6 Decomposition Gases

DFT insights into the TM(Cu, Ni, Ag) and TMO(CuO, NiO, Ag2O) modified HfSe2 for detecting PD fault gases

Contact Info

Product

Resources

About

First-Principles Investigation of Transition Metal (Co, Rh, and Ir)-Modified WS₂ Monolayer Membranes: Adsorption and Detection of SF₆ Decomposition Gases