e22c8be476e30850b5ab2c475e7981db pmc_29135919.pdf 94cde434f0e147489183793571e5dbda69b044fb pmc_29135919.pdf fc67a7e320bf665947006151bdf3fcc581751bbca9188cb6c4a25481df831d6e pmc_29135919.pdf Title: Acoustic Sensors Based on Amino-Functionalized Nanoparticles to Detect Volatile Organic Solvents Subject: Love-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. Keywords: Love wave; surface acoustic wave; gas sensor; functionalized-nanoparticles; solvent; spin coating Author: Daniel Matatagui, Oleg Kolokoltsev, José Manuel Saniger, Isabel Gràcia, María Jesús Fernández, Jose Luis Fontecha and María del Carmen Horrillo Creator: LaTeX with hyperref package Producer: pdfTeX-1.40.17 CreationDate: Tue Nov 14 11:39:51 2017 CET ModDate: Tue Nov 14 11:39:51 2017 CET Tagged: no UserProperties: no Suspects: no Form: none JavaScript: no Pages: 9 Encrypted: no Page size: 595.276 x 841.89 pts (A4) Page rot: 0 File size: 2503976 bytes Optimized: no PDF version: 1.5 name type encoding emb sub uni object ID ------------------------------------ ----------------- ---------------- --- --- --- --------- POLUWR+URWPalladioL-Ital Type 1 Custom yes yes no 61 0 EARHZF+URWPalladioL-Bold Type 1 Custom yes yes no 62 0 DDRAXE+VnURWPalladioL-Bold Type 1 Custom yes yes no 63 0 LAAMRH+URWPalladioL-Roma Type 1 Custom yes yes no 64 0 OGLZWV+VnURWPalladioL Type 1 Custom yes yes 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