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

WonChun Oh | Zendy; Kamrun Nahar Fatema | Zendy; Yin Liu | Zendy; Chong Hun Jung | Zendy; Suresh Sagadevan | Zendy; Md Rokon Ud Dowla Biswas | Zendy

Open Access

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

Author(s) -

WonChun Oh,

Kamrun Nahar Fatema,

Yin Liu,

Chong Hun Jung,

Suresh Sagadevan,

Md Rokon Ud Dowla Biswas

Publication year - 2020

Publication title -

acs omega

Language(s) - English

Resource type - Journals

ISSN - 2470-1343

DOI - 10.1021/acsomega.0c01699

Subject(s) - graphene , materials science , polypyrrole , scanning electron microscope , x ray photoelectron spectroscopy , nanocomposite , semiconductor , band gap , oxide , transmission electron microscopy , raman spectroscopy , nanotechnology , analytical chemistry (journal) , spectroscopy , chemical engineering , optoelectronics , polymer , composite material , chemistry , optics , organic chemistry , physics , quantum mechanics , engineering , metallurgy , polymerization

In this study, we demonstrate the fabrication and characterization of a new quaternary semiconductor nanocomposite of LiCuMo 2 O 11 /graphene oxide/polypyrrole (LCMGP) via a hydrothermal method and testing of an NH 3 and H 2 SO 4 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 NH 3 and H 2 SO 4 and quantifying their concentration in the gas flow. These results have been confirmed by exposing the sensor to different concentrations of NH 3 and H 2 SO 4 (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.

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