Liquefied petroleum gas (LPG) sensing of biphasic Cu6Sn5:SnO2 nanocomposite thin-films

Verma, Vernica; Pandey, Narendra Kumar; Singh, Ajeet; Singh, Peramjeet; Gupta, Priya; Yadav, B. C.

doi:10.1016/j.matchemphys.2022.126459

Cited by 10 publications

(2 citation statements)

References 40 publications

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“…The sensor response of a gas sensor is an important parameter that can be defined by the ratio of current in presence of gas toair, whereas the sensitivity can be estimated by the slope of sensor response curve as given by Eqs1 and 2. 32 SR I I 1…”

Section: Methodsmentioning

confidence: 99%

MnO₂-SnO₂ Based Liquefied Petroleum Gas Sensing Device for Lowest Explosion Limit Gas Concentration

2022

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An MnO2-SnO2 nanocomposite-based sensing device with below lower exposure limit (0.5-2.0 vol%) for liquefied petroleum gas (LPG) is reported. The synthesized material is highly crystalline with an average crystallite size of 16.786 nm, confirmed by the X-ray diffraction (XRD). A Williamson-Hall plot shows that induced strain of 2.627×10-4, present in the nanocomposite, lies between the induced strains of both of its constituents. The XRD pattern of nanocomposite contains cubic phase of MnO2 and the tetragonal phase of SnO2. Tauc plot shows the optical energy band gap of MnO2, SnO2, and MnO2-SnO2 of 3.407, 3.037, and 3.202 eV, respectively. The surface morphological investigation shows the brush-like structure which enhances sensor performance by providing activation sites. The energy dispersive X-ray spectrum found that materials are highly pure because other peaks are not observed. The functional group analysis by Fourier transform infrared spectroscopy found that Sn-O and Mn-O both vibration bands existed. The highest sensor response was found to be 2.42 for 2.0 vol% whereas for a lower concentration of 0.5 vol% the sensor response was observed to 1.44. The fast response and recovery of this sensing device were found to17.30 and 23.25 s, respectively, for 0.5 vol% of LPG.

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Section: Methodsmentioning

confidence: 99%

MnO₂-SnO₂ Based Liquefied Petroleum Gas Sensing Device for Lowest Explosion Limit Gas Concentration

2022

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“…The Ohmic contact structure encompasses chemi-resistive kinetics between the oxidizing (CO 2 ) and active materials, while the Schottky structure originates from both the chemical sensitivity of the metal oxide semiconductor and the Schottky type sensitivity of the metal-semiconductor junction. [66][67][68] When exposed to air, YCeO sensor adsorbed oxygen molecules, capturing free electrons from the conduction band to form chemisorbed oxygen species resulting in an increase in effective potential barrier height as shown Fig. 10a.…”

Section: Co 2 Sensing Analysismentioning

confidence: 99%

Fabrication of Highly Sensitive YCeO Chemo-resistive Gas Sensor for Selective Detection of CO₂

Srivastava,

Pandey,

Verma

et al. 2024

ECS Sens. Plus

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A room-temperature-operated CO2 gas sensor based on YCeO nanocomposite was effectively prepared by the simple hydrothermal technique to detect low traces of CO2 (50-250 ppm). The YCeO granular morphological features were observed using field-emission scanning electron microscopy, which confirmed successful fabrication of nanocomposite of Y2O3 and CeO2. X-ray diffraction of YCeO showed the Cubic structure of space group Fm3m having density 6.74 gmcm-3. Rietveld refinement was performed for the analysis of complete crystal structural property. Surface porosity and specific surface area were observed by Brunnauer-Emmet Teller analysis. Optical properties were observed using UV-Visible spectroscopy. The band gap, optical conductivity, and refractive index calculated were 3.44 eV, 2.63×106, and 0.1164, respectively. Fourier transform infrared spectroscopy was done to analyze the functional and elastic properties of as-prepared nanomaterial. The highest sensor response recorded was 2.14. The response and recovery time at 50 ppm observed were 75.6 and 107.3 s, respectively. The YCeO chemo-resistive sensor confirmed long-term stability and selectivity to CO2 as compared to other gases viz. LPG, NH3, CH4, H2S, NO2 and H2. The relative humidity exposure was also performed at 15, 55 and 95% RH, in which it was confirmed that the sensor would give best response at mid humidity level i.e. 55 %RH. Sensing characteristics curve of YCeO nanocomposite at different temperature (30-90°C) at 50 ppm confirmed that YCeO sensor performed excellent at room temperature. This report unlocks an innovative opening for the fabrication of sensing devices that are room-temperature-operatable, highly-sensitive and selective for quick detection of CO2 gas for its commercialization

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Preparation of ZnS-Based Nanocomposites by Thermolysis of Zinc-Containing Monomers in the Presence of Thiourea: Their Characterizations and LPG Sensing Applications

Uflyand,

Baimuratova,

Korchagin

et al. 2024

J Inorg Organomet Polym

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Liquefied petroleum gas (LPG) sensing of biphasic Cu6Sn5:SnO2 nanocomposite thin-films

Cited by 10 publications

References 40 publications

MnO₂-SnO₂ Based Liquefied Petroleum Gas Sensing Device for Lowest Explosion Limit Gas Concentration

MnO₂-SnO₂ Based Liquefied Petroleum Gas Sensing Device for Lowest Explosion Limit Gas Concentration

Fabrication of Highly Sensitive YCeO Chemo-resistive Gas Sensor for Selective Detection of CO₂

Preparation of ZnS-Based Nanocomposites by Thermolysis of Zinc-Containing Monomers in the Presence of Thiourea: Their Characterizations and LPG Sensing Applications

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Liquefied petroleum gas (LPG) sensing of biphasic Cu6Sn5:SnO2 nanocomposite thin-films

Cited by 10 publications

References 40 publications

MnO2-SnO2 Based Liquefied Petroleum Gas Sensing Device for Lowest Explosion Limit Gas Concentration

MnO2-SnO2 Based Liquefied Petroleum Gas Sensing Device for Lowest Explosion Limit Gas Concentration

Fabrication of Highly Sensitive YCeO Chemo-resistive Gas Sensor for Selective Detection of CO2

Preparation of ZnS-Based Nanocomposites by Thermolysis of Zinc-Containing Monomers in the Presence of Thiourea: Their Characterizations and LPG Sensing Applications

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Product

Resources

About

MnO₂-SnO₂ Based Liquefied Petroleum Gas Sensing Device for Lowest Explosion Limit Gas Concentration

MnO₂-SnO₂ Based Liquefied Petroleum Gas Sensing Device for Lowest Explosion Limit Gas Concentration

Fabrication of Highly Sensitive YCeO Chemo-resistive Gas Sensor for Selective Detection of CO₂