Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 195, Issue -, Pages 189-196Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2014.01.021
Keywords
Gas sensors; Trimethylamine; MoO3 nanoplates; Ultrasonic spray pyrolysis; Selective detection
Funding
- National Research Foundation of Korea (NRF)
- Korea Government (MEST) [2013R1A2A1A01006545]
Ask authors/readers for more resources
An ultraselective and ultrasensitive trimethylamine (TMA) sensor was achieved using MoO3 nanoplates-prepared by ultrasonic spray pyrolysis followed by a heat treatment at 450 degrees C. The small and thin MoO3 nanoplates with gas-accessible structures showed an unusually high response to 5 ppm TMA (ratio of resistance to air and gas =373.74) at 300 degrees C with detection limit as low as 45 ppb. Moreover, the ratios of the cross-responses to interfering gases (i.e., 5 ppm C2H5 OH, CO, CH4, C-3 H-8, H-2, and NO2) to the response to 5 ppm TMA were extremely low (0.008-0.016). The source of the ultraselective and highly sensitive detection of TMA with negligible interference from other gases is discussed with respect to the acid/base properties, size, and morphology of the MoO3 sensing materials. (C) 2014 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available