Effects of reaction time on the morphological,structural, and gas sensing properties of ZnO nanostructures |
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| Affiliation: | 1. College of Materials Science and Engineering, Chongqing University, Shazheng Road, Shapingba District, Chongqing 400044, PR China;2. National Engineering Research Center for Magnesium Alloys, Chongqing 400030, China;3. Nano Biochip Research Group, Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis (UniMAP), 01000 Kangar, Perlis, Malaysia;1. College of Aerospace Engineering, Chongqing University, Chongqing, 400044, China;2. School of Materials Science and Engineering, Jiangsu University, Jiangsu, 212013, China;3. Centre for Clean Energy Technology, Faculty of Science, University of Technology, Sydney, Australia;1. Sensor and Actuator Division, CSIR-Central Glass and Ceramic Research Institute, Kolkata 700032, India;2. Instrumentation and Electronics Engineering Department, Jadavpur University, Salt Lake Campus, Kolkata 700098, India;1. School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China;2. Department of Physics, COMSATS University Islamabad, Lahore Campus, Punjab 54000, Pakistan |
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| Abstract: | Morphological transformation was achieved from ZnO hexagonal needle-like rods to hexagonal flower-like rods by varying the reaction growth time using the hydrothermal method. Optical bandgap energies were calculated from the absorption spectra using UV‐vis spectroscopy. Gas sensing properties of flower-like hexagonal ZnO structures at 50 ppm for ethanol (C2H5OH) and nitrogen dioxide (NO2) at different temperatures were analyzed. The sensor showed a higher response toward C2H5OH than NO2 gas at 350 °C. |
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| Keywords: | Gas sensing Optical property Structural property ZnO |
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