Temperature dependent selective detection of ethanol and methanol using MoS2/TiO2 composite

Singh, Sukhwinder; Sharma, Sandeep

doi:10.1016/j.snb.2021.130798

Cited by 43 publications

(37 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Sigma-Aldrich (India) provided sodium borohydride (NaBH), sodium molybdate dihydrate (Na 2 MoO 4 ·2H 2 O), selenium powder (Se), functionalized multiwalled carbon nanotubes (MWCNTs), and Nafion solution, and other chemicals were used as described elsewhere …”

Section: Methodsmentioning

confidence: 99%

“…We used a sensor fabrication method with a two-terminal device sensor device having a 2 mm separation as displayed in the Supporting Information (Figure S1). It is identical to that detailed in our previous work . The current–voltage ( I – V ) measurements were performed using a Keithley SourceMeter (2612A).…”

Section: Methodsmentioning

confidence: 99%

“…Sigma-Aldrich (India) provided sodium borohydride (NaBH), sodium molybdate dihydrate (Na 2 MoO 4 •2H 2 O), selenium powder (Se), functionalized multiwalled carbon nanotubes (MWCNTs), and Nafion solution, and other chemicals were used as described elsewhere. 54 Synthesis of MoSe 2 /MWCNTs Composite and Sensor Fabrication. The MoSe 2 /MWCNT composite was synthesized by using a hydrothermal method as described in Figure 1.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

See 2 more Smart Citations

Selective N,N-Dimethylformamide Vapor Sensing Using MoSe₂/Multiwalled Carbon Nanotube Composites at Room Temperature

Singh

Deb

Kumar

et al. 2022

ACS Appl. Nano Mater.

Self Cite

View full text Add to dashboard Cite

As a typical volatile organic compound (VOC), N,N-dimethylformamide (DMF) is a popular solvent and tracer for environmental air quality monitoring. Highly selective detection with low electrical noise, quick response/recovery times, and superior sensitivity at room temperature against VOCs, especially at the parts per billion (ppb) level, continues to be a significant challenge in gas-sensing applications. To address the issue, herein we demonstrate an MoSe2/multiwalled carbon nanotube composite based chemiresitor sensor for the detection of DMF. MoSe2 with a layered sheetlike structure supports MWCNTs to enhance the specific surface area, thereby increasing the sensitivity (down to 0.1 ppm for DMF) and selectivity and improving the response over a wider range of relative humidities (30–80%). The composite-based sensor shows good sensitivity (12.3% for 5 ppm of DMF), better selectivity, and faster response (65 s) and recovery (90 s) times in comparison to the MoSe2 sensor (192, 392 s), respectively, and a consistent response over 35 days. Density functional theory simulations were employed to understand the adsorption process and sensing mechanism. An analysis revealed a negative adsorption energy of −716 meV, implying that the adsorption process is spontaneous and exothermic. Further, charge transfer (0.013 e) using the Bader scheme confirms the process to be physisorption in nature. The results were further supported using an electrochemical impedance spectroscopy analysis. These results indicate the great potential of the composite for selective and stable sensing of DMF over a wider range of relative humidities. The present work suggests that a composite of MoSe2 with MWCNTs could be useful to design DMF sensors with improved sensitivity and selectivity under various environmental conditions.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: ■ Experimental Sectionmentioning

confidence: 99%

See 1 more Smart Citation

Selective N,N-Dimethylformamide Vapor Sensing Using MoSe₂/Multiwalled Carbon Nanotube Composites at Room Temperature

Singh

Deb

Kumar

et al. 2022

ACS Appl. Nano Mater.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Sukhwinder Singh et al 82 prepared MoS 2 /TiO 2 composite for the detection of methanol and ethanol. As shown in Fig.…”

Section: Applications and Synthesis Strategies Of Mos 2 ...mentioning

confidence: 99%

“…9 (a) Schematic diagram of the synthesis of MoS 2 /TiO 2 composite. 82 (b) Repeatability testing of 200 ppm methanol for six consecutive cycles at an operating temperature of 240 C 82. (c) Repeatability testing of 300 ppm methanol for six consecutive cycles at an operating temperature of 300 C 82.…”

mentioning

confidence: 99%

Synthesis of MoS₂-based nanostructures and their applications in rechargeable ion batteries, catalysts and gas sensors: a review

et al. 2022

View full text Add to dashboard Cite

show abstract

Room‐Temperature Gas‐Sensing Properties of Metal Oxide Nanowire/Graphene Hybrid Structures

Devi

Sharma

Saini

2022

1D Semiconducting Hybrid Nanostructures

View full text Add to dashboard Cite

Temperature dependent selective detection of ethanol and methanol using MoS2/TiO2 composite

Cited by 43 publications

References 59 publications

Selective N,N-Dimethylformamide Vapor Sensing Using MoSe₂/Multiwalled Carbon Nanotube Composites at Room Temperature

Selective N,N-Dimethylformamide Vapor Sensing Using MoSe₂/Multiwalled Carbon Nanotube Composites at Room Temperature

Synthesis of MoS₂-based nanostructures and their applications in rechargeable ion batteries, catalysts and gas sensors: a review

Room‐Temperature Gas‐Sensing Properties of Metal Oxide Nanowire/Graphene Hybrid Structures

Contact Info

Product

Resources

About

Temperature dependent selective detection of ethanol and methanol using MoS2/TiO2 composite

Cited by 43 publications

References 59 publications

Selective N,N-Dimethylformamide Vapor Sensing Using MoSe2/Multiwalled Carbon Nanotube Composites at Room Temperature

Selective N,N-Dimethylformamide Vapor Sensing Using MoSe2/Multiwalled Carbon Nanotube Composites at Room Temperature

Synthesis of MoS2-based nanostructures and their applications in rechargeable ion batteries, catalysts and gas sensors: a review

Room‐Temperature Gas‐Sensing Properties of Metal Oxide Nanowire/Graphene Hybrid Structures

Contact Info

Product

Resources

About

Selective N,N-Dimethylformamide Vapor Sensing Using MoSe₂/Multiwalled Carbon Nanotube Composites at Room Temperature

Selective N,N-Dimethylformamide Vapor Sensing Using MoSe₂/Multiwalled Carbon Nanotube Composites at Room Temperature

Synthesis of MoS₂-based nanostructures and their applications in rechargeable ion batteries, catalysts and gas sensors: a review