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Polypyrrole-Bonded Quaternary Semiconductor LiCuMo2O11-Graphene Nanocomposite for a Narrow Band Gap Energy Effect and Its Gas-Sensing Performance

Oh WC 1 , Fatema KN 2 , Liu Y 1 , Jung CH 3 , Sagadevan S 4 , Biswas MRUD 2

Affiliations 

  • 1 College of Materials Science and Engineering, Anhui University of Science & Technology, Huainan 232001, PR China
  • 2 Department of Advanced Materials Science & Engineering, Hanseo University, Seosan-si, Chungcheongnam-do 31962, South Korea
  • 3 Decontamination & Decommissing Research Division, Korea Atomic Energy Research Institute, P.O. Box 105, Yuseong, Daejeon 305-600, Korea
  • 4 Nanotechnology & Catalysis Research Centre, University of Malaya, Kuala Lumpur 50603, Malaysia
ACS Omega, 2020 Jul 21;5(28):17337-17346.
PMID: 32715218 DOI: 10.1021/acsomega.0c01699

Abstract

In this study, we demonstrate the fabrication and characterization of a new quaternary semiconductor nanocomposite of LiCuMo2O11/graphene oxide/polypyrrole (LCMGP) via a hydrothermal method and testing of an NH3 and H2SO4 sensor operating in gaseous states at room temperature. We used X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy to characterize the properties of LCMGP nanostructures. Our sensor is capable of detecting NH3 and H2SO4 and quantifying their concentration in the gas flow. These results have been confirmed by exposing the sensor to different concentrations of NH3 and H2SO4 (100-1000 ppm). The obtained results confirm the exceptional sensing properties of the graphene-polymer-combined quaternary semiconductor nanocomposite related to the oxidation-reduction process that can be used for detection, identification, and quantification purposes.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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