Abstract
Tubular ZnO microstructure arrays were fabricated on a large scale by a two-step hydrothermal method. The porous ZnO tubular structures were then used to construct a gas sensor for CO detection. The microtube array gas sensor showed sensitive response to different concentration of CO with an optimum temperature of 250 °C. Because of the large surface to volume ratio, the sensitivity of the microtube arrays was about twice of that of the ZnO rods. Our results indicate that this simple two-step method for fabrication of large-scale tubular microstructure arrays can be potentially used in gas sensor applications with improved performance.
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81.07.Bc; 78.55.Et; 07.07.Df
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Wang, J., Sun, X., Huang, H. et al. A two-step hydrothermally grown ZnO microtube array for CO gas sensing. Appl. Phys. A 88, 611–615 (2007). https://doi.org/10.1007/s00339-007-4076-8
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DOI: https://doi.org/10.1007/s00339-007-4076-8