Acoustic Sensors Based on Amino-Functionalized Nanoparticles to Detect Volatile Organic Solvents
AbstractLove-wave gas sensors based on surface functionalized iron oxide nanoparticles has been developed in this research. Amino-terminated iron oxide nanoparticles were deposited, by a spin coating technique, onto the surface of Love-wave sensors, as a very reproducible gas-sensing layer. The gases tested were organic solvents, such as butanol, isopropanol, toluene and xylene, for a wide and low concentration range, obtaining great responses, fast response times of a few minutes (the time at which the device produced a signal change equal to 90%), good reproducibilities, and different responses for each detected solvent. The estimated limits of detection obtained have been very low for each detected compound, about 1 ppm for butanol, 12 ppm for isopropanol, 3 ppm for toluene and 0.5 ppm for xylene. Therefore, it is demonstrated that this type of acoustic wave sensor, with surface amino-functionalized nanoparticles, is a good alternative to those ones functionalized with metal nanoparticles, which result very expensive sensors to achieve worse results. View Full-Text
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Matatagui, D.; Kolokoltsev, O.; Saniger, J.M.; Gràcia, I.; Fernández, M.J.; Fontecha, J.L.; Horrillo, M.C. Acoustic Sensors Based on Amino-Functionalized Nanoparticles to Detect Volatile Organic Solvents. Sensors 2017, 17, 2624.
Matatagui D, Kolokoltsev O, Saniger JM, Gràcia I, Fernández MJ, Fontecha JL, Horrillo MC. Acoustic Sensors Based on Amino-Functionalized Nanoparticles to Detect Volatile Organic Solvents. Sensors. 2017; 17(11):2624.Chicago/Turabian Style
Matatagui, Daniel; Kolokoltsev, Oleg; Saniger, José Manuel; Gràcia, Isabel; Fernández, María Jesús; Fontecha, Jose Luis; Horrillo, María del Carmen. 2017. "Acoustic Sensors Based on Amino-Functionalized Nanoparticles to Detect Volatile Organic Solvents." Sensors 17, no. 11: 2624.
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