Abstract
Lemon juice assisted combustion method was adopted to prepare MgO nanorods. The role of heat treatment on structural, morphological and gas sensing properties of MgO NPs has been analyzed. The phase analyses of the samples were analyzed using X-ray Diffraction (XRD). The single-phase nanostructure of MgO nanoparticles has been identified from the XRD spectra. The average crystallite sizes are found to be in the range 7.8 nm–19.2 nm. The nanorod like structure of MgO has been recorded through SEM and TEM. The size of MgO nanostructure recorded from TEM is well matched with the crystallite size calculated by XRD. The lemon assisted synthesis of MgO nanoparticles show noticeable gas sensing properties for various gases. In different aspects, gas sensing response of MgO nanoparticles have been analyzed for different gases. The maximum sensing response ~70% has been recorded for LPG at the optimum temperature (OT) 300 °C with the gas concentrations 1000 ppm.
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