A two-step hydrothermally grown ZnO microtube array for CO gas sensing

J. X. Wang; X. W. Sun; H. Huang; Y. C. Lee; O. K. Tan; M. B. Yu; G. Q. Lo; D. L. Kwong

doi:10.1007/s00339-007-4076-8

A two-step hydrothermally grown ZnO microtube array for CO gas sensing

J. X. Wang, X. W. Sun^*, H. Huang, Y. C. Lee, O. K. Tan, M. B. Yu, G. Q. Lo, D. L. Kwong

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

93 Citations (Scopus)

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.

Original language	English
Pages (from-to)	611-615
Number of pages	5
Journal	Applied Physics A: Materials Science and Processing
Volume	88
Issue number	4
DOIs	https://doi.org/10.1007/s00339-007-4076-8
Publication status	Published - Sept 2007
Externally published	Yes

ASJC Scopus Subject Areas

General Chemistry
General Materials Science

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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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AU - Wang, J. X.

AU - Sun, X. W.

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AU - Lee, Y. C.

AU - Tan, O. K.

AU - Yu, M. B.

AU - Lo, G. Q.

AU - Kwong, D. L.

PY - 2007/9

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N2 - 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.

AB - 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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A two-step hydrothermally grown ZnO microtube array for CO gas sensing

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