Polypyrrole-bonded quaternary semiconductor licumo2o11-graphene nanocomposite for a narrow band gap energy effect and its gas-sensing performance
Document Type
Article
Publication Date
7-21-2020
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.
Keywords
Hydrothermal method, Quaternary semiconductor nanocomposite, LiCuMo2O11/graphene oxide/polypyrrole (LCMGP), Oxidation-reduction process
Divisions
nanocat
Funders
Fibrous Ceramics & Aerospace Materials Center, Korea Institute of Ceramic Engineering and Technology (KICET)
Publication Title
ACS Omega
Volume
5
Issue
28
Publisher
American Chemical Society
Publisher Location
1155 16TH ST, NW, WASHINGTON, DC 20036 USA