Development of Graphene Oxide Thick Film Sensors via Screen Printing Technique for NO2 Gas Monitoring
Author(s): Sandesh V. Gaikwad, Ujjan B. Kadam, Bhaskar K. Nikam, Pratibha G. Raundal
Publication #: 2604001
Date of Publication: 03.04.2026
Country: India
Pages: 1-11
Published In: Volume 12 Issue 2 April-2026
DOI: https://doi.org/10.62970/IJIRCT.v12.i2.2604001
Abstract
Graphene oxide (GO) thick film gas sensors were successfully fabricated on glass substrates using a simple, economical and scalable screen-printing technique. The prepared films were evaluated for their gas sensing performance using a static gas sensing system toward different test gases including nitrogen dioxide (NO2), acetone, methanol, ethanol and LPG over an operating temperature range of 40–120 °C. The sensing characteristics revealed that the GO thick films exhibit a strong dependence on operating temperature and type of gas analyte. Among the tested gases, the sensor demonstrated excellent selectivity toward NO2 gas, showing the maximum sensitivity of 58.62 % at an optimum operating temperature of 100 °C. The response of the sensor toward other gases such as acetone, methanol, ethanol, and LPG at the same temperature was comparatively lower, with values of 26.54 %, 13.27 %, 16.32 % and 12.44 % respectively, indicating good selectivity for NO2 detection. The sensor exhibited a fast response time of 14 s and recovery time of 53 s toward NO2 gas at the optimum temperature. The enhanced sensing performance of the GO thick film can be attributed to the large specific surface area, presence of oxygen-containing functional groups, and effective adsorption–desorption processes on the graphene oxide surface. These results demonstrate that screen-printed GO thick films are promising candidates for low-temperature, fast and selective NO2 gas sensing applications, particularly for environmental monitoring and air quality control.
Keywords: Graphene oxide; Screen printing technique; Thick film sensor; NO2 gas sensing; Gas sensitivity; Environmental monitoring.
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