Flexible room-temperature formaldehyde sensors based on rGO film and rGo/MoS2 hybrid film

Xian Li, Jing Wang, Dan Xie, Jianlong Xu, Yi Xia, Weiwei Li, Lan Xiang, Zhemin Li, Shiwei Xu, Sridhar Komarneni

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Gas sensors based on reduced graphene oxide (rGO) films and rGO/MoS2 hybrid films were fabricated on polyethylene naphthalate substrates by a simple self-assembly method, which yielded flexible devices for detection of formaldehyde (HCHO) at room temperature. The sensing test results indicated that the rGO and rGO/MoS2 sensors were highly sensitive and fully recoverable to a ppm-level of HCHO. The bending and fatigue test results revealed that the sensors were also mechanically robust, durable and effective for long-term use. The rGO/MoS2 sensors showed higher sensitivities than rGO sensors, which was attributed to the enhanced HCHO adsorption and electron transfer mediated by MoS2. Furthermore, two kinds of MoS2 nanosheets were prepared by either hydrothermal synthesis or chemical exfoliation and were compared for their detection of HCHO, which revealed that the hydrothermally produced MoS2 nanosheets with rich defects led to enhanced sensitivity of the rGO/MoS2 sensors. Moreover, these fabricated flexible sensors can be applied for the HCHO detection in food packaging.

Original languageEnglish (US)
Article number325501
JournalNanotechnology
Volume28
Issue number32
DOIs
StatePublished - Jul 18 2017

Fingerprint

Graphite
Formaldehyde
Graphene
Oxide films
Oxides
Sensors
Nanosheets
Temperature
Hydrothermal synthesis
Polyethylene
Chemical sensors
Self assembly
Polyethylenes
Packaging
Fatigue of materials
Adsorption
Defects
Electrons
Substrates

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

Li, Xian ; Wang, Jing ; Xie, Dan ; Xu, Jianlong ; Xia, Yi ; Li, Weiwei ; Xiang, Lan ; Li, Zhemin ; Xu, Shiwei ; Komarneni, Sridhar. / Flexible room-temperature formaldehyde sensors based on rGO film and rGo/MoS2 hybrid film. In: Nanotechnology. 2017 ; Vol. 28, No. 32.
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Li, X, Wang, J, Xie, D, Xu, J, Xia, Y, Li, W, Xiang, L, Li, Z, Xu, S & Komarneni, S 2017, 'Flexible room-temperature formaldehyde sensors based on rGO film and rGo/MoS2 hybrid film', Nanotechnology, vol. 28, no. 32, 325501. https://doi.org/10.1088/1361-6528/aa79e6

Flexible room-temperature formaldehyde sensors based on rGO film and rGo/MoS2 hybrid film. / Li, Xian; Wang, Jing; Xie, Dan; Xu, Jianlong; Xia, Yi; Li, Weiwei; Xiang, Lan; Li, Zhemin; Xu, Shiwei; Komarneni, Sridhar.

In: Nanotechnology, Vol. 28, No. 32, 325501, 18.07.2017.

Research output: Contribution to journalArticle

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AU - Xie, Dan

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AU - Xia, Yi

AU - Li, Weiwei

AU - Xiang, Lan

AU - Li, Zhemin

AU - Xu, Shiwei

AU - Komarneni, Sridhar

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