Highly Sensitive and Selective Trimethylamine Sensor Using Yolk-shell Structured Mo-doped Co3O4 Spheres
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Pure and 0.5, 1, 2, 5, and 10 at% of Mo-doped Co3O4 yolk-shell spheres were synthesized by ultrasonic spray pyrolysis of droplets containing Co nitrate, ammonium molybdate, and sucrose and their gas sensing characteristics to 5 ppm trimethylamine (TMA), ethanol, p-xylene, toluene, ammonia, carbon monoxide, and benzene were measured at 225-325℃. The sensor using pure Co3O4 yolk-shell spheres showed the highest response to p-xylene and very low response to TMA at 250℃, while the doping of Mo into Co3O4 tended to increase the overall responses of gas sensors. In particular, the sensor using 5 at% Mo-doped Co3O4 yolk-shell spheres exhibited the high response to TMA with low cross-responses to other interfering gases. The high response and selectivity of Mo-doped Co3O4 yolkshell spheres to TMA are attributed to the electronic sensitization by higher valent Mo doping and acid-base interaction between TMA and Mo components.
Abstract
Pure and 0.5, 1, 2, 5, and 10 at% of Mo-doped Co3O4 yolk-shell spheres were synthesized by ultrasonic spray pyrolysis of droplets containing Co nitrate, ammonium molybdate, and sucrose and their gas sensing characteristics to 5 ppm trimethylamine (TMA), ethanol, p-xylene, toluene, ammonia, carbon monoxide, and benzene were measured at 225-325℃. The sensor using pure Co3O4 yolk-shell spheres showed the highest response to p-xylene and very low response to TMA at 250℃, while the doping of Mo into Co3O4 tended to increase the overall responses of gas sensors. In particular, the sensor using 5 at% Mo-doped Co3O4 yolk-shell spheres exhibited the high response to TMA with low cross-responses to other interfering gases. The high response and selectivity of Mo-doped Co3O4 yolkshell spheres to TMA are attributed to the electronic sensitization by higher valent Mo doping and acid-base interaction between TMA and Mo components.
참고문헌 (18)
- S. Sadok, "Determination of trimethylamine in fish by flow injection analysis", Anal. Chim. Acta, 321, pp.69~74 (1996)
- G. M. Bota, "Direct detection of trimethylamine in meat food products using ion mobility spectrometry", Talanta, 68(3), pp.629~635 (2006)
- H. U. Rehman, "Fish odour syndrome", Postgrad. Med. J., 32, pp.115~130 (2011)
- Z. H. Endre, "Breath ammonia and trimethylamine allow real-time monitoring of haemodialysis efficacy", Physiol. Meas., 32(1), pp.115~130 (2011)
- 서준민, "Synthesis of Nanoporous Metal Oxide Films Using Anodic Oxidation and Their Gas Sensing Properties", 센서학회지, 27(1), pp.13~20 (2018), 한국센서학회[DOI]
- Sanjit Manohar Majhi, "A Comparative Study of Gas Sensing Properties of Au-loaded ZnO and Au@ZnO Core-shell Nanoparticles", 센서학회지, 27(2), pp.76~81 (2018), 한국센서학회[DOI]
- Seung Yeop Yi, "In-decorated NiO Nanoigloos Gas Sensor with Morphological Evolution for Ethanol Sensors", 센서학회지, 28(4), pp.231~235 (2019), 한국센서학회
- W. -H. Zhang, "Fabrication of SnO2-ZnO nanocomposite sensor for selective sensing of trimethylamine and freshness of fishes", Sens. Actuator B, 134(2), pp.403~408 (2008)
- H. -S. Woo, "Highly sensitive and selective trimethylamine sensor using onedimensional ZnO-Cr2O3 hetero-nanostructures", Nanotechnology, 23(24), pp.245501(1)~245501(10) (2012)
- H. -Y. Li, "Molybdenum trioxide nanopaper as a dual gas sensor for detecting trimethylamine and hydrogen sulfide", RSC Adv., 7(7), pp.3680~3685 (2017)
- X. Chu, "Trimethylamine sensing properties of sensors based on MoO3 microrods", Sens. Actuator B, 148(2), pp.399~403 (2010)
- Y. H. Cho, "Ultraselective and ultrasensitive detection of trimethylamine using MoO3 nanoplates prepared by ultrasonic spray pyrolysis", Sens. Actuator B, 195, pp.189~196 (2014)
- Y. J. Hong, "One-Pot Facile Synthesis of Double-Shelled SnO2 Yolk-Shell-Structured Powders by Continuous Process as Anode Materials for Liion Batteries", Adv. Mater., 25(16), pp.2279~2283 (2013)
- H. -J. Kim, "Ultraselective and sensitive detection of xylene and toluene for monitoring indoor air pollution using Cr-doped NiO hierarchical nanostructures", Nanoscale, 5(15), pp.7066~7079 (2013)
- J. -W. Yoon, "Electronic sensitization of the response to C2H5OH of p-type NiO nanofibers by Fe doping", Nanotechnology, 24(44), pp.444005(1)~444005(8) (2013)
- H. -J. Kim, "Highly sensitive C2H5OH sensors using Fe-doped NiO hollow spheres", Sens. Actuator B, 171-172, pp.1029~1037 (2012)
- Y. H. Cho, "Highly selective and sensitive detection of trimethylamine using WO3 hollow spheres prepared by ultrasonic spray pyrolysis", Sens. Actuator B, 176, pp.971~977 (2013)
- B. G. -Polanowska, "Detection of potential chronic kidney disease markers in breath using gas chromatography with mass-spectral detection coupled with thermal desorption method", J. Chromatogr. A, 1301(2), pp.179~189 (2013)