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dc.contributor.authorWu, Ren-Jangen_US
dc.contributor.authorHuang, Yu-Chingen_US
dc.contributor.authorYu, Ming-Ruen_US
dc.contributor.authorLin, Tzu Hsuanen_US
dc.contributor.authorHung, Shih-Linen_US
dc.date.accessioned2014-12-08T15:11:01Z-
dc.date.available2014-12-08T15:11:01Z-
dc.date.issued2008-08-28en_US
dc.identifier.issn0925-4005en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.snb.2008.04.033en_US
dc.identifier.urihttp://hdl.handle.net/11536/8446-
dc.description.abstractA new blended material, m-CNTs/NaClO4/Ppy, was developed as a gas sensor to detect ethanol concentrations at room temperature. The sensing material polypyrrole (Ppy) was synthesized in situ by UV-photo-polymerization. The multiwall carbon nanotubes (m-CNTs) added enhanced the short-term repeatability of the Ppy-sensing material. The relative resistance variation (R-ethanol/R-air) of mCNTs/NaClO4/Ppy was 1.193 when exposed to ethanol of 30,000 ppm. The sensor response and recovery times (both 20s) were very short to this concentration. An unstable baseline of the sensor was explained by theoretical calculation of molecular dynamics made for ethanol adsorption on polypyrrole, which revealed formation of a new bond, N-H center dot center dot center dot O. Adsorption energy decreased with increasing the number of ethanol molecules adsorbed and was 0.8 kcal/mol at eight adsorbed molecules. Sensor responses of three different Ppy samples were measured to ethanol concentrations of 18,000-40,000 ppm. (C) 2008 Elsevier B.V. All rights reserved.en_US
dc.language.isoen_USen_US
dc.subjectPolypyrroleen_US
dc.subjectMultiwall carbon nanotubes (m-CNTs)en_US
dc.subjectUV-photo polymerizationen_US
dc.subjectEthanol sensoren_US
dc.titleApplication of m-CNTs/NaClO4/Ppy to a fast response, room working temperature ethanol sensoren_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.snb.2008.04.033en_US
dc.identifier.journalSENSORS AND ACTUATORS B-CHEMICALen_US
dc.citation.volume134en_US
dc.citation.issue1en_US
dc.citation.spage213en_US
dc.citation.epage218en_US
dc.contributor.department土木工程學系zh_TW
dc.contributor.departmentDepartment of Civil Engineeringen_US
dc.identifier.wosnumberWOS:000259885500033-
dc.citation.woscount24-
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