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Title: Functionalized horizontally aligned CNT array and random CNT network for CO2 sensing
Authors: Wang, Yanrong
Zhang, Kang
Zou, Jianping
Wang, Xinghui
Sun, Leimeng
Wang, Taihong
Zhang, Qing
Keywords: CO2 sensing
CNT Array
Issue Date: 2017
Source: Wang, Y., Zhang, K., Zou, J., Wang, X., Sun, L., Wang, T., et al. (2017). Functionalized horizontally aligned CNT array and random CNT network for CO2 sensing. Carbon, 117, 263-270.
Series/Report no.: Carbon
Abstract: Horizontally aligned and density-controlled single-wall carbon nanotubes (CNT) represent attractive building blocks for nanoelectronics. In this paper, horizontally aligned CNT arrays and random CNT network are synthesized by thermal CVD at 925 °C in an ethanol atmosphere. With appropriate functionalization applied to the aligned CNTs, a high sensitivity of 8.48% for ambient CO2 gas concentration of 500 ppm is achieved. In addition, these aligned CNT array sensors show much faster response and recovery time than a random CNT network. Moreover, good selectivity against NO2 and NH3, and good repeatability are demonstrated. These results pave the way for a deeper understanding of the physical and electrical properties of single-wall CNT and inter-tube junctions, which could be helpful in designing and optimizing as-grown single-wall CNT for gas sensor and other nanoelectronic devices.
ISSN: 0008-6223
DOI: 10.1016/j.carbon.2017.03.012
Rights: © 2017 Elsevier Ltd.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:EEE Journal Articles

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