Abstract
This work presents the sensing properties of reduced graphene oxide/gold (rGO/Au) nano-hybrid thin films under liquefied petroleum gas (LPG) at room temperature. The measurements of the electrical sensitivity of the films exhibit an extremely rapid response (∼ 5 s), fast recovery (∼ 35 s), good reproducibility, high sensitivity and remarkable stability when exposed to a 50 ppm concentration of LPG. The hybrid formation of rGO/Au is confirmed using x-ray diffraction (XRD) pattern, UV–visible absorption spectrometry, Fourier transform infrared (FTIR) spectrometry and scanning electron microscopy (SEM) and energy dispersive x-ray spectroscopy (EDX) methods. The sensing behavior of the rGO/Au films is compared to graphene oxide and reduced graphene oxide nano-thin films, and the results indicate that the electrical conductivity of the film has significantly improved due to the presence of Au nanoparticles.
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Taheri, M., Feizabadi, Z., Jafari, S. et al. Fast Response and High Sensitivity of Reduced Graphene Oxide/Gold Nano-hybrid for LPG Sensors at Room Temperature. J. Electron. Mater. 47, 7232–7239 (2018). https://doi.org/10.1007/s11664-018-6656-0
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DOI: https://doi.org/10.1007/s11664-018-6656-0