Journal
NANOSCALE RESEARCH LETTERS
Volume 11, Issue -, Pages -Publisher
SPRINGEROPEN
DOI: 10.1186/s11671-016-1675-3
Keywords
SWCNT-MIP composites; Gas-sensing properties; Methanol gas
Funding
- National Natural Science Foundation of China [51402257, 51262038]
- Natural Science Foundation of Yunnan Province, China [2013FZ003]
- Training Program for Young Teachers of Yunnan University
- Fund Projects in Yunnan Province Department of Education [2015Y009]
- fund of the State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, China [SKL-SPM-201208]
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The single-walled carbon nanotube (SWCNT)-molecularly imprinted powder (MIP) composites in this paper were prepared by mixing SWCNTs with MIPs. The structure and micrograph of the as-prepared SWCNTs-MIPs samples were characterized by XRD and TEM. The gas-sensing properties were tested through indirect-heating sensors based on SWCNT-MIP composites fabricating on an alumina tube with Au electrodes and Pt wires. The results showed that the structure of SWCNTs-MIPs is of orthogonal perovskite and the average particle size of the SWCNTs-MIPs was in the range of 10-30 nm. SWCNTs-MIPs exhibit good methanol gas-sensitive properties. At 90 degrees C, the response to 1 ppm methanol is 19.7, and the response to the interferent is lower than 5 to the other interferent gases (ethanol, formaldehyde, toluene, acetone, ammonia, and gasoline). The response time and recovery time are 50 and 58 s, respectively.
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