%L scholars15231
%J Materials
%O cited By 28
%N 3
%R 10.3390/ma14030522
%D 2021
%X A tin oxide (SnO2 ) and reduced graphene oxide (rGO) hybrid composite gas sensor for high-performance carbon dioxide (CO2 ) gas detection at room temperature was studied. Since it can be used independently from a heater, it emerges as a promising candidate for reducing the complexity of device circuitry, packaging size, and fabrication cost; furthermore, it favors integration into portable devices with a low energy density battery. In this study, SnO2-rGO was prepared via an in-situ chemical reduction route. Dedicated material characterization techniques including field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), energy dispersive X-ray (EDX) spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS) were conducted. The gas sensor based on the synthesized hybrid composite was successfully tested over a wide range of carbon dioxide concentrations where it exhibited excellent response magnitudes, good linearity, and low detection limit. The synergistic effect can explain the obtained hybrid gas sensor�s prominent sensing properties between SnO2 and rGO that provide excellent charge transport capability and an abundance of sensing sites. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
%K Carbon dioxide; Chemical sensors; Field emission microscopes; Gas detectors; Gases; Graphene; Low power electronics; Reduced Graphene Oxide; Scanning electron microscopy; Tin dioxide; Tin oxides; X ray photoelectron spectroscopy, Carbon dioxide concentrations; Energy dispersive x-ray; Energy-density batteries; Field emission scanning electron microscopy; Low detection limit; Material characterization techniques; Reduced graphene oxides (RGO); Transport capabilities, High resolution transmission electron microscopy
%P 1-16
%I MDPI AG
%A Z.Y. Lee
%A H.F.B. Hawari
%A G.W.B. Djaswadi
%A K. Kamarudin
%V 14
%T A highly sensitive room temperature co2 gas sensor based on sno2-rgo hybrid composite