Synthesis, characterization and ethanol vapor sensing performance of SnO2/Graphene composite film

Abstract

High performing sensor consisting of SnO2/Gn nanocomposite was fabricated using a novel one-step in-situ sonochemical method. The reducing properties of SnCl2 was used to reduce graphite oxide (GO) so that SnCl2 could be transformed to SnO2 on the basal plane of graphene. The combined characterizations including X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier Transformed Infra-Red spectroscopic data (FTIR) indicated the successful formation of SnO2/Gn composites. Current-voltage (I-V) characteristics of the gas sensor showed ideal ohmic behavior having low resistance. To demonstrate the product on sensing application, gas sensors were fabricated using SnO2/Gn composites and used in detecting ethanol vapor at room temperature (27°C).The results indicate that the SnO2/Gn composite exhibits a considerably high sensing performance of 17.54% response at 150 ppm ethanol vapor, rapid response and reproducibility. Furthermore, the performance of the gas sensor based on SnO2/Gn is very stable for a long period of time under normal operating conditions. Therefore, it is suggested that SnO2/Gn can be considered as an excellent sensing material which also has a potential for wider range of applications on sensors.

Effects of rGO Concentration on Electrical and Mechanical Properties of rGO Natural Rubber Nanocomposite

“…The resulting GO was reduced by heating at 250°C in air for 5-10 min to obtain reduced graphene oxide, rGO. 12,10 Preparation of Reduced Graphene Oxide/Rubber Nanocomposite At first, rGO dispersion was prepared by well mixing rGO in water. While stirring the mixture NR latex and polymeric dispersant agent is added to form a nanocomposite.…”

A review on appropriate graphene synthesis methods for diverse applications

“…in 2014 have been successfully demonstrated a high-performing sensor consisting of SnO2/Graphene nanocomposite by using a novel one-step in-situ sonochemical method [81].…”

“…[ [82][83][84]. GO has also been reduced to rGO using coffea arabica leave for bio-medical application for the first time which is referred as a green synthesis method [86].…”

Synthesis of g-C3N4 nanosheet modified SnO2 composites with improved performance for ethanol gas sensing

“…16 Moreover, for gas sensing materials, the composites of SnO 2 exhibit excellent sensing properties such as high response, low-cost, fast response and recovery, which have attracted much interest in the past few years. [17][18][19][20][21][22][23][24] However, among these sensors, the poor electrical characteristics prevent their direct applications. g-C 3 N 4 is an organic and nontoxic semiconductor, which has attracted much attention, exhibiting excellent photoactivity, photocatalysis and electron transport.…”