Temperature-dependent variation in ammonia sensing properties of ZnO-GO nanocomposites

Shakuntala Avadhutrao Shinde *

Department of Physics, Sharadchandra Arts, Commerce and Science College, Naigaon (Bz.), Dist. Nanded, MS, India-431709.
 
Research Article
International Journal of Science and Research Archive, 2024, 13(01), 3126–3129.
Article DOI: 10.30574/ijsra.2024.13.1.1993
Publication history: 
Received on 09 September 2024; revised on 18 October 2024; accepted on 21 October 2024
 
Abstract: 
Industrialization has caused significant environmental and health risks due to the emission of hazardous gases like ammonia. This study investigates the temperature-dependent gas sensing properties of a ZnO-GO nanocomposite synthesized via microwave-assisted combustion. The ammonia sensor, tested from 25 °C (room temperature) to 200 °C, showed its highest sensitivity (72 %) at 100°C for 100 ppm ammonia. It achieved a response time of 94 seconds and a recovery time of 58 seconds. These results demonstrate the potential of ZnO-GO nanocomposite sensors in reducing ammonia-related risks in industrial environments.
 
Keywords: 
Nanocomposite; Ammonia sensor; Zinc oxide-graphene oxide (ZnO-GO); Hazardous gases
 
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