Highly sensitive pure molybdenum trioxide thin films at a higher annealing temperature for liquefied petroleum gas and humidity sensing at room temperature

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

doi:10.1007/s00339-023-06491-7

Cited by 2 publications

(1 citation statement)

References 56 publications

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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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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

View full text Add to dashboard Cite

show abstract

Development of V2O5@GO (1D/2D) nanohybrid based chemiresistor for low-trace of toluene

Srivastava,

Singh,

Sahz

et al. 2024

Sensors and Actuators B: Chemical

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Highly sensitive pure molybdenum trioxide thin films at a higher annealing temperature for liquefied petroleum gas and humidity sensing at room temperature

Cited by 2 publications

References 56 publications

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

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

Development of V2O5@GO (1D/2D) nanohybrid based chemiresistor for low-trace of toluene

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Highly sensitive pure molybdenum trioxide thin films at a higher annealing temperature for liquefied petroleum gas and humidity sensing at room temperature

Cited by 2 publications

References 56 publications

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

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

Development of V2O5@GO (1D/2D) nanohybrid based chemiresistor for low-trace of toluene

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

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