Development of high-performance fiber optic gas sensor based rice-like CeO2/MWCNT nanocomposite synthesized by facile hydrothermal route

Shajahan Shanavas; Tansir Ahamad; Saad M. Alshehri; Aeysha Sultan; Roberto Acevedo; Ponnusamy Munusamy Anbarasan

doi:10.1016/j.optlastec.2019.105902

Development of high-performance fiber optic gas sensor based rice-like CeO₂/MWCNT nanocomposite synthesized by facile hydrothermal route

Shajahan Shanavas, Tansir Ahamad, Saad M. Alshehri, Aeysha Sultan, Roberto Acevedo, Ponnusamy Munusamy Anbarasan^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

In this report, a novel rice like CeO₂/MWCNTs nanocomposite was synthesized by a facile hydrothermal route and explore the systematic investigation of the structural, morphological and elemental composition by X-ray diffraction (XRD), Field emission scanning electron microscope (FESEM), energy dispersive spectra (EDS), N₂ adsorption-desorption and X-ray photoelectron spectra (XPS) analysis. XRD and FESEM studies reveal that cubic structure with an average particle size of 40–50 and 100–120 nm, which is homogeneously dispersed on the MWCNT. Impressively, CeO₂/MWCNT showed a huge surface area of 108 m²/g and pore size 12.71 nm. The sensing characteristics were done using ammonia and ethanol gases with various concentrations (0–500 ppm) using fiber optic clad modified technique. The results demonstrate that CeO₂/MWCNT deliver high sensitivity (78/counts/ppm), rapid response (17 s) and recovery time (9 s) towards ethanol gas.

Original language	English
Article number	105902
Journal	Optics and Laser Technology
Volume	123
DOIs	https://doi.org/10.1016/j.optlastec.2019.105902
State	Published - 2020

Bibliographical note

Publisher Copyright:
© 2019 Elsevier Ltd

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

Access to Document

10.1016/j.optlastec.2019.105902

Cite this

@article{d6e79728f598417392725dcc691ea7c8,

title = "Development of high-performance fiber optic gas sensor based rice-like CeO2/MWCNT nanocomposite synthesized by facile hydrothermal route",

abstract = "In this report, a novel rice like CeO2/MWCNTs nanocomposite was synthesized by a facile hydrothermal route and explore the systematic investigation of the structural, morphological and elemental composition by X-ray diffraction (XRD), Field emission scanning electron microscope (FESEM), energy dispersive spectra (EDS), N2 adsorption-desorption and X-ray photoelectron spectra (XPS) analysis. XRD and FESEM studies reveal that cubic structure with an average particle size of 40–50 and 100–120 nm, which is homogeneously dispersed on the MWCNT. Impressively, CeO2/MWCNT showed a huge surface area of 108 m2/g and pore size 12.71 nm. The sensing characteristics were done using ammonia and ethanol gases with various concentrations (0–500 ppm) using fiber optic clad modified technique. The results demonstrate that CeO2/MWCNT deliver high sensitivity (78/counts/ppm), rapid response (17 s) and recovery time (9 s) towards ethanol gas.",

keywords = "Gas sensor, NiS, Photoconversion efficiency, Reduced graphene oxide, Solar cell",

author = "Shajahan Shanavas and Tansir Ahamad and Alshehri, {Saad M.} and Aeysha Sultan and Roberto Acevedo and Anbarasan, {Ponnusamy Munusamy}",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2020",

month = mar,

doi = "10.1016/j.optlastec.2019.105902",

language = "English",

volume = "123",

journal = "Optics and Laser Technology",

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T1 - Development of high-performance fiber optic gas sensor based rice-like CeO2/MWCNT nanocomposite synthesized by facile hydrothermal route

AU - Shanavas, Shajahan

AU - Ahamad, Tansir

AU - Alshehri, Saad M.

AU - Sultan, Aeysha

AU - Acevedo, Roberto

AU - Anbarasan, Ponnusamy Munusamy

PY - 2020/3

Y1 - 2020/3

N2 - In this report, a novel rice like CeO2/MWCNTs nanocomposite was synthesized by a facile hydrothermal route and explore the systematic investigation of the structural, morphological and elemental composition by X-ray diffraction (XRD), Field emission scanning electron microscope (FESEM), energy dispersive spectra (EDS), N2 adsorption-desorption and X-ray photoelectron spectra (XPS) analysis. XRD and FESEM studies reveal that cubic structure with an average particle size of 40–50 and 100–120 nm, which is homogeneously dispersed on the MWCNT. Impressively, CeO2/MWCNT showed a huge surface area of 108 m2/g and pore size 12.71 nm. The sensing characteristics were done using ammonia and ethanol gases with various concentrations (0–500 ppm) using fiber optic clad modified technique. The results demonstrate that CeO2/MWCNT deliver high sensitivity (78/counts/ppm), rapid response (17 s) and recovery time (9 s) towards ethanol gas.

AB - In this report, a novel rice like CeO2/MWCNTs nanocomposite was synthesized by a facile hydrothermal route and explore the systematic investigation of the structural, morphological and elemental composition by X-ray diffraction (XRD), Field emission scanning electron microscope (FESEM), energy dispersive spectra (EDS), N2 adsorption-desorption and X-ray photoelectron spectra (XPS) analysis. XRD and FESEM studies reveal that cubic structure with an average particle size of 40–50 and 100–120 nm, which is homogeneously dispersed on the MWCNT. Impressively, CeO2/MWCNT showed a huge surface area of 108 m2/g and pore size 12.71 nm. The sensing characteristics were done using ammonia and ethanol gases with various concentrations (0–500 ppm) using fiber optic clad modified technique. The results demonstrate that CeO2/MWCNT deliver high sensitivity (78/counts/ppm), rapid response (17 s) and recovery time (9 s) towards ethanol gas.

KW - Gas sensor

KW - NiS

KW - Photoconversion efficiency

KW - Reduced graphene oxide

KW - Solar cell

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