MoS2–carbon nanotube hybrid material growth and gas sensing

Geetanjali Deokar, Peter Vancso, Raul Arenal, Florent Ravaux, Juan Casanova-Cháfer, Eduard Llobet, Anna Makarova, Denis Vyalikh, Claudia Struzzi, Philippe Lambin, Mustapha Jouiad, Jean-François Colomer

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

Abstract

Hexagonal-shaped nanoplates (HNPs) of MoS2 on vertically aligned carbon nanotubes (CNTs) over a patterned area (a circular area of 1 cm2 diameter) are produced by chemical vapor deposition technique. With an optimized initial Mo film thickness, a uniform coverage of MoS2 HNPs with a thickness around 20 nm is achieved. The results confirm that the CNT template plays an important role in the MoS2 HNPs growth. Each MoS2 HNP consists of abundant exposed edges, interesting for sensing and catalysis applications. High crystallinity and quality of the as-produced material are revealed by X-ray photoelectron and Raman spectroscopies. Furthermore, NO2 gas-sensing studies show better sensitivity and recovery for MoS2/CNT samples as compared to pristine CNTs. The detection of NO2 gas in a few tens of parts per million to a few hundreds of parts per billion range, at room temperature, is achieved. Density-functional theory calculation indicates that the exposed edges of MoS2 play a significant role in the NO2 sensing as compared to horizontally aligned MoS2 layers. The present report can promote the research toward the fabrication of efficient and reliable MoS2-based hybrid materials for toxic gas-sensing applications for air quality monitoring in various environments.

Patterned 3D hierarchical MoS2 hexagonal nanoplates with exposed edges are synthesized on vertically aligned carbon nanotubes by a simple chemical vapor deposition technique. The as-grown hybrid heterostructure with only top contacts, shows excellent NO2 gas-sensing properties over a few ppb to a few hundreds of ppm range.

langueAnglais
Numéro d'article1700801
Nombre de pages10
journalAdvanced Materials Interfaces
Volume4
Numéro24
Les DOIs
étatPublié - 22 déc. 2017

Empreinte digitale

Hybrid materials
Carbon nanotubes
Gases
Chemical vapor deposition
Air quality
Contacts (fluid mechanics)
Catalysis
Density functional theory
Film thickness
Raman spectroscopy
Heterojunctions
X ray photoelectron spectroscopy
Fabrication
Recovery
Monitoring
Temperature

mots-clés

    Citer ceci

    Deokar, Geetanjali ; Vancso, Peter ; Arenal, Raul ; Ravaux, Florent ; Casanova-Cháfer, Juan ; Llobet, Eduard ; Makarova, Anna ; Vyalikh, Denis ; Struzzi, Claudia ; Lambin, Philippe ; Jouiad, Mustapha ; Colomer, Jean-François. / MoS2–carbon nanotube hybrid material growth and gas sensing. Dans: Advanced Materials Interfaces. 2017 ; Vol 4, Numéro 24.
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    abstract = "Abstract Hexagonal-shaped nanoplates (HNPs) of MoS2 on vertically aligned carbon nanotubes (CNTs) over a patterned area (a circular area of 1 cm2 diameter) are produced by chemical vapor deposition technique. With an optimized initial Mo film thickness, a uniform coverage of MoS2 HNPs with a thickness around 20 nm is achieved. The results confirm that the CNT template plays an important role in the MoS2 HNPs growth. Each MoS2 HNP consists of abundant exposed edges, interesting for sensing and catalysis applications. High crystallinity and quality of the as-produced material are revealed by X-ray photoelectron and Raman spectroscopies. Furthermore, NO2 gas-sensing studies show better sensitivity and recovery for MoS2/CNT samples as compared to pristine CNTs. The detection of NO2 gas in a few tens of parts per million to a few hundreds of parts per billion range, at room temperature, is achieved. Density-functional theory calculation indicates that the exposed edges of MoS2 play a significant role in the NO2 sensing as compared to horizontally aligned MoS2 layers. The present report can promote the research toward the fabrication of efficient and reliable MoS2-based hybrid materials for toxic gas-sensing applications for air quality monitoring in various environments. Patterned 3D hierarchical MoS2 hexagonal nanoplates with exposed edges are synthesized on vertically aligned carbon nanotubes by a simple chemical vapor deposition technique. The as-grown hybrid heterostructure with only top contacts, shows excellent NO2 gas-sensing properties over a few ppb to a few hundreds of ppm range.",
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    year = "2017",
    month = "12",
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    doi = "10.1002/admi.201700801",
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    Deokar, G, Vancso, P, Arenal, R, Ravaux, F, Casanova-Cháfer, J, Llobet, E, Makarova, A, Vyalikh, D, Struzzi, C, Lambin, P, Jouiad, M & Colomer, J-F 2017, 'MoS2–carbon nanotube hybrid material growth and gas sensing' Advanced Materials Interfaces, VOL. 4, Numéro 24, 1700801. https://doi.org/10.1002/admi.201700801

    MoS2–carbon nanotube hybrid material growth and gas sensing. / Deokar, Geetanjali; Vancso, Peter; Arenal, Raul; Ravaux, Florent; Casanova-Cháfer, Juan; Llobet, Eduard; Makarova, Anna; Vyalikh, Denis; Struzzi, Claudia ; Lambin, Philippe; Jouiad, Mustapha; Colomer, Jean-François.

    Dans: Advanced Materials Interfaces, Vol 4, Numéro 24, 1700801, 22.12.2017.

    Résultats de recherche: Contribution à un journal/une revueArticle

    TY - JOUR

    T1 - MoS2–carbon nanotube hybrid material growth and gas sensing

    AU - Deokar, Geetanjali

    AU - Vancso, Peter

    AU - Arenal, Raul

    AU - Ravaux, Florent

    AU - Casanova-Cháfer, Juan

    AU - Llobet, Eduard

    AU - Makarova, Anna

    AU - Vyalikh, Denis

    AU - Struzzi, Claudia

    AU - Lambin, Philippe

    AU - Jouiad, Mustapha

    AU - Colomer, Jean-François

    PY - 2017/12/22

    Y1 - 2017/12/22

    N2 - Abstract Hexagonal-shaped nanoplates (HNPs) of MoS2 on vertically aligned carbon nanotubes (CNTs) over a patterned area (a circular area of 1 cm2 diameter) are produced by chemical vapor deposition technique. With an optimized initial Mo film thickness, a uniform coverage of MoS2 HNPs with a thickness around 20 nm is achieved. The results confirm that the CNT template plays an important role in the MoS2 HNPs growth. Each MoS2 HNP consists of abundant exposed edges, interesting for sensing and catalysis applications. High crystallinity and quality of the as-produced material are revealed by X-ray photoelectron and Raman spectroscopies. Furthermore, NO2 gas-sensing studies show better sensitivity and recovery for MoS2/CNT samples as compared to pristine CNTs. The detection of NO2 gas in a few tens of parts per million to a few hundreds of parts per billion range, at room temperature, is achieved. Density-functional theory calculation indicates that the exposed edges of MoS2 play a significant role in the NO2 sensing as compared to horizontally aligned MoS2 layers. The present report can promote the research toward the fabrication of efficient and reliable MoS2-based hybrid materials for toxic gas-sensing applications for air quality monitoring in various environments. Patterned 3D hierarchical MoS2 hexagonal nanoplates with exposed edges are synthesized on vertically aligned carbon nanotubes by a simple chemical vapor deposition technique. The as-grown hybrid heterostructure with only top contacts, shows excellent NO2 gas-sensing properties over a few ppb to a few hundreds of ppm range.

    AB - Abstract Hexagonal-shaped nanoplates (HNPs) of MoS2 on vertically aligned carbon nanotubes (CNTs) over a patterned area (a circular area of 1 cm2 diameter) are produced by chemical vapor deposition technique. With an optimized initial Mo film thickness, a uniform coverage of MoS2 HNPs with a thickness around 20 nm is achieved. The results confirm that the CNT template plays an important role in the MoS2 HNPs growth. Each MoS2 HNP consists of abundant exposed edges, interesting for sensing and catalysis applications. High crystallinity and quality of the as-produced material are revealed by X-ray photoelectron and Raman spectroscopies. Furthermore, NO2 gas-sensing studies show better sensitivity and recovery for MoS2/CNT samples as compared to pristine CNTs. The detection of NO2 gas in a few tens of parts per million to a few hundreds of parts per billion range, at room temperature, is achieved. Density-functional theory calculation indicates that the exposed edges of MoS2 play a significant role in the NO2 sensing as compared to horizontally aligned MoS2 layers. The present report can promote the research toward the fabrication of efficient and reliable MoS2-based hybrid materials for toxic gas-sensing applications for air quality monitoring in various environments. Patterned 3D hierarchical MoS2 hexagonal nanoplates with exposed edges are synthesized on vertically aligned carbon nanotubes by a simple chemical vapor deposition technique. The as-grown hybrid heterostructure with only top contacts, shows excellent NO2 gas-sensing properties over a few ppb to a few hundreds of ppm range.

    KW - CNT

    KW - DFT calculations

    KW - MoS

    KW - gas sensor

    KW - nanoplates

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