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.

中文翻译：

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柠檬汁（天然燃料）辅助合成用于 LPG 气体传感器应用的 MgO 纳米棒

摘要 采用柠檬汁助燃法制备MgO纳米棒。分析了热处理对 MgO NPs 的结构、形态和气敏特性的作用。使用 X 射线衍射 (XRD) 分析样品的相分析。已从 XRD 光谱中鉴定出 MgO 纳米颗粒的单相纳米结构。发现平均微晶尺寸在 7.8 nm-19.2 nm 范围内。已通过 SEM 和 TEM 记录了 MgO 的纳米棒状结构。TEM 记录的 MgO 纳米结构的尺寸与 XRD 计算的微晶尺寸非常匹配。柠檬辅助合成的 MgO 纳米粒子对各种气体显示出明显的气敏特性。在不同方面，已分析了 MgO 纳米颗粒对不同气体的气敏响应。