A simple method to synthesize graphene–zinc oxide nanocomposite has been developed. A reduced graphene oxide–ZnO nanocomposite was prepared using a reflux method with ethylene glycol as medium. X-ray diffraction analysis, scanning electron microscopy, energy-dispersive spectrometry, and nitrogen adsorption–desorption measurements were used to characterize the resulting composite materials. The highest response of about 98% was observed when using pure ZnO at 300°C, while the second highest sensor response of about 96% was achieved by graphene–ZnO with 1:3 composition. It was found that the graphene–zinc oxide hybrid has potential to improve sensor performance at low temperature. The graphene–ZnO hybrid with 1:3 composition showed good response of 36% at 125°C, an operating temperature at which pure ZnO showed no response.
Journal of Electronic Materials – Springer Journals
Published: Mar 21, 2018
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