Journal
NEW JOURNAL OF CHEMISTRY
Volume 42, Issue 16, Pages 13573-13580Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8nj01242c
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Funding
- Science and Engineering Research Board (SERB), Department of Science and Technology (DST), New Delhi, India [SR/FTP/PS-083/2012]
- Human Resources Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Korea, Government Ministry of Trade, Industry and Energy [20164030201310]
- Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Korea, Government Ministry of Trade, Industry and Energy
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Advancing the properties of selective and sensitive metal oxide based gas sensors is a challenging research topic for the detection of toxic, and pollutant gases. In the present research, we successfully deposited a three dimensional (3D) mesoporous ZnO nanostructure on a glass substrate by using a hydrothermal method, and tested the material for its gas sensing performance. These 3D mesoporous ZnO nanostructures were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and photoluminescence techniques. Gas sensing performance analysis was carried out for nitrogen dioxide (NO2) gas at different temperatures and concentrations. The 3D mesoporous ZnO nanostructure revealed excellent gas sensing performance for NO2 gas because of its large surface area. The larger surface area led to an increase in the gas sensitivity. In addition, the sensor based on the 3D mesoporous ZnO nanostructure could be used at a low operating temperature of 150 degrees C. This work suggests that the 3D mesoporous ZnO nanostructure is a versatile material for NO2 gas sensing applications.
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