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A Comparative Study of Chemically and Biologically Synthesized MgO Nanomaterial for Liquefied Petroleum Gas Detection

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The exceptional chemical and physical properties of nanostructured materials are extremely suitable for designing new and enhanced sensing devices, particularly gas sensors and biosensors. The present work describes the synthesis of magnesium oxide (MgO) nanoparticles through two methods: a green synthesis using aloe vera plant extract and a chemical method using a glycine-based solution combustion route. In a single step, the extracted organic molecules from aloe vera plants were used to reduce metal ions by the green method. MgO nanoparticles were coated onto the interdigital electrode using the drop-drying method. The dynamic gas-sensing characteristics were measured for liquefied petroleum gas (LPG) at different concentrations and various temperatures. The MgO nanoparticles were characterized by using x-ray diffraction, field emission scanning electron microscopy, and high-resolution transmission electron microscopy to determine the size and structure of the particles. The product’s functional properties were analyzed by Fourier transform-infrared spectroscopy and UV–visible spectroscopy. We found that the LPG sensing behavior of biologically synthesized MgO registers excellent sensitivity at various operating temperatures.

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The authors sincerely acknowledge the Center for Nano Science and Technology (CNST), Institute of Science and Technology (IST), Jawaharlal Nehru Technological University Hyderabad for providing gas sensing facilities to carry out the present research work.

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Correspondence to Kalagadda Venkateswara Rao.

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Thirupathi, R., Solleti, G., Sreekanth, T. et al. A Comparative Study of Chemically and Biologically Synthesized MgO Nanomaterial for Liquefied Petroleum Gas Detection. Journal of Elec Materi 47, 3468–3473 (2018). https://doi.org/10.1007/s11664-018-6185-x

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  • MgO
  • liquid petroleum gas
  • green synthesis
  • chemical synthesis
  • gas sensing
  • aloe vera
  • selectivity