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<p>Low-cost preparation of nanostructured materials is one of the important factors for the commercialization of sensors. This study reports the sustainable and low-cost synthesis of pure SnO<sub>2</sub> and SnO<sub>2</sub>-CuO nanostructures using a domestic microwave annealing approach. The material obtained was structurally examined using X-ray diffraction and a scanning electron microscope. The pure SnO<sub>2</sub> and SnO<sub>2</sub>-CuO inks were deposited over laser-induced graphene interdigitated electrodes. Towards the volatile organic compounds, the pure SnO<sub>2</sub> and SnO<sub>2</sub>-CuO went through ethanol sensing. The SnO<sub>2</sub>-CuO-based sensor demonstrated strong response and selectivity for detecting ethanol at room temperature with a response of 11%, a response time of 53&#xa0;s, and a recovery time of 64&#xa0;s at 100 ppm of ethanol. The high response and selectivity of the sensor towards ethanol make it ideal for continuous tracking in both environmental and industrial settings.</p>

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Low-cost domestic microwave synthesis of SnO2/CuO nanostructure for ethanol detection

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月23日

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  • Pitchanunt Chaiyo,
  • Mohamed Ahmed Belal,
  • Sugato Hajra,
  • Swati Panda,
  • Premkumar Sharad Bhosale,
  • Hohyun Keum,
  • Hoe Joon Kim

摘要

Low-cost preparation of nanostructured materials is one of the important factors for the commercialization of sensors. This study reports the sustainable and low-cost synthesis of pure SnO2 and SnO2-CuO nanostructures using a domestic microwave annealing approach. The material obtained was structurally examined using X-ray diffraction and a scanning electron microscope. The pure SnO2 and SnO2-CuO inks were deposited over laser-induced graphene interdigitated electrodes. Towards the volatile organic compounds, the pure SnO2 and SnO2-CuO went through ethanol sensing. The SnO2-CuO-based sensor demonstrated strong response and selectivity for detecting ethanol at room temperature with a response of 11%, a response time of 53 s, and a recovery time of 64 s at 100 ppm of ethanol. The high response and selectivity of the sensor towards ethanol make it ideal for continuous tracking in both environmental and industrial settings.