Author(s): Malikarjun Wakade and Megha Mahabole

Abstract: This study presents the design and evaluation of a low-temperature ethylene glycol (EG) sensor utilizing zinc oxide (ZnO) as the sensing material. The sensor aims to operate efficiently at reduced temperature, enhancing its versatility for various environmental conditions. Thick film of procured ZnO is developed on glass substrate using screen printing technique. The material is characterized by X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), Thermogravimetric Analysis-Differential Thermal Analysis (TG-DTA), and Uv-visible (UV) spectroscopy. The properties of the ZnO sensor are thoroughly investigated for ethylene glycol. And various gas sensing parameters are determined. The sensor detects EG at 155 °C with fast response and recovery time (120 sec.), lower saturation limit (2ppm to 100ppm). It demonstrating long-term stability. This study contributes to the development of new EG sensor and highlights ZnO as a promising material for sensitive and reliable EG detection.

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