DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Nam Hoon | ko |
dc.contributor.author | Choi, Seonjin | ko |
dc.contributor.author | Yang, Dae-Jin | ko |
dc.contributor.author | Bae, Jihyun | ko |
dc.contributor.author | Park, Jongjin | ko |
dc.contributor.author | Kim, Il-Doo | ko |
dc.date.accessioned | 2014-09-01T08:16:36Z | - |
dc.date.available | 2014-09-01T08:16:36Z | - |
dc.date.created | 2014-02-24 | - |
dc.date.created | 2014-02-24 | - |
dc.date.issued | 2014-03 | - |
dc.identifier.citation | SENSORS AND ACTUATORS B-CHEMICAL, v.193, pp.574 - 581 | - |
dc.identifier.issn | 0925-4005 | - |
dc.identifier.uri | http://hdl.handle.net/10203/189446 | - |
dc.description.abstract | In this work, we report a remarkably improved toluene response and superior cross-sensitivity against H-2 S molecules by combining Pd catalysts and highly porous WO3 nanofibers (NFs). We functionalized Pd catalysts inside and/or outside of WO3 NFs synthesized by electrospinning, which is a facile and versatile process for producing webs of metal oxide NFs. Pd-embedded WO3 NFs were obtained by the electrospinning of a Pd and W composite precursor/poly(methyl methacrylate) (PMMA) solution followed by calcination at 700 degrees C. Pd nanoparticles (NPs)( 6-10 nm) synthesized by a polyol method were decorated on the WO3 NFs (Pd-NPs/WO3 NFs) by the attachment of the Pd NPs on as-prepared WO3 NFs. The gas sensing characteristics of pure WO3, Pd-embedded WO3, Pd-NP5/WO3, and Pd-NPs/Pd-embedded WO3 NFs were tested using H2S and toluene gases in a highly humid atmosphere (RH 90%), which is similar to human exhaled breath. The results showed that the Pd-NPs/Pd-embedded WO3 NFs whose inner and outer layers were decorated by Pd catalysts, exhibited a high toluene response (R-air/R-gas= 5.5 at 1 ppm) and remarkable selectivity against H-2 S (R-air/R-gas = 1.36 at 1 ppm) at 350 C degrees, whereas pristine WO3 NFs showed superior H2 S response (R-air/R-gas =11.1 at 1 ppm) along with a negligible response toward toluene (R-air/R-gas =1.27 atl ppm). The highly porous WO3 NFs decorated with Pd catalysts, exhibited potential feasibility, i.e., a low limit of detection (LOD) of 20 ppb (R-air/R-gas = 1.32) at 350 degrees C, for application in VOCs sensors, particularly for diagnoses of lung cancer. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.subject | ACUTE MYOCARDIAL-INFARCTION | - |
dc.subject | SEMICONDUCTOR GAS SENSORS | - |
dc.subject | EXHALED-BREATH | - |
dc.subject | SENSING CHARACTERISTICS | - |
dc.subject | NANOPARTICLES | - |
dc.subject | SNO2 | - |
dc.subject | NETWORKS | - |
dc.subject | ACETONE | - |
dc.subject | AU | - |
dc.title | Highly sensitive and selective hydrogen sulfide and toluene sensors using Pd functionalized WO3 nanofibers for potential diagnosis of halitosis and lung cancer | - |
dc.type | Article | - |
dc.identifier.wosid | 000330113600081 | - |
dc.identifier.scopusid | 2-s2.0-84891545269 | - |
dc.type.rims | ART | - |
dc.citation.volume | 193 | - |
dc.citation.beginningpage | 574 | - |
dc.citation.endingpage | 581 | - |
dc.citation.publicationname | SENSORS AND ACTUATORS B-CHEMICAL | - |
dc.identifier.doi | 10.1016/j.snb.2013.12.011 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Kim, Il-Doo | - |
dc.contributor.nonIdAuthor | Yang, Dae-Jin | - |
dc.contributor.nonIdAuthor | Bae, Jihyun | - |
dc.contributor.nonIdAuthor | Park, Jongjin | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Electrospinning | - |
dc.subject.keywordAuthor | Catalyst | - |
dc.subject.keywordAuthor | Exhaled breath sensor | - |
dc.subject.keywordAuthor | Tungsten oxide | - |
dc.subject.keywordAuthor | Palladium | - |
dc.subject.keywordPlus | ACUTE MYOCARDIAL-INFARCTION | - |
dc.subject.keywordPlus | SEMICONDUCTOR GAS SENSORS | - |
dc.subject.keywordPlus | EXHALED-BREATH | - |
dc.subject.keywordPlus | SENSING CHARACTERISTICS | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | SNO2 | - |
dc.subject.keywordPlus | NETWORKS | - |
dc.subject.keywordPlus | ACETONE | - |
dc.subject.keywordPlus | AU | - |
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