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MgO@CeO2 chemiresistive flexible sensor for room temperature LPG detection

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Abstract

Nowadays, gas sensors are playing an essential role in wearable electronic devices for detecting pollutant, flammable, toxic gases besides it needs to be flexible, transparent, and operating at room temperature. Liquefied petroleum gas detection is critical because it is a flammable and toxic gas that of dangerous to humans as well the environment. The present study reports the hydrothermally synthesized MgO@CeO2 nanocomposite coated on flexible Polyethylene terephthalate substrate printed interdigitated gold electrodes (working electrodes) through the spin coating and continued for liquefied petroleum gas detection (50–900 ppm) at room temperature. X-ray diffraction, Fourier transform infrared spectroscopy, field emission scanning electron microscopy and transmission electron microscopy were used to analyze the structural and morphological studies of prepared nanomaterials. The fabricated low-cost, eco-friendly MgO@CeO2 chemiresistive flexible sensor showed good selectivity towards analyte at room temperature with a sensitivity of 32% at 900 ppm and lower detection of 5% towards 50 ppm along with good long-term stability and mechanical flexibility.

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Acknowledgements

The authors would like to thank their sincere appreciation to the Centre for Nano Science & Technology, IST-JNTUH for providing research facilities.

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Authors and Affiliations

  1. Center for Nano Science & Technology, Institute of Science & Technology, Jawaharlal Nehru Technological University Hyderabad, Hyderabad, Telangana, 500085, India

    M. Sai Bhargava Reddy, Saraswathi Kailasa, B. Geeta Rani, N. Jayarambabu, P. Munindra & K. Venkateswara Rao

  2. Department of Electronics & Communication Engineering, Kakatiya University, Warangal, Telangana, 506009, India

    K. Bikshalu

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  1. M. Sai Bhargava Reddy
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Sai Bhargava Reddy, M., Kailasa, S., Geeta Rani, B. et al. MgO@CeO2 chemiresistive flexible sensor for room temperature LPG detection. J Mater Sci: Mater Electron 30, 17295–17302 (2019). https://doi.org/10.1007/s10854-019-02076-4

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