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Conference Paper: Improvement of piezoelectric crystal sensor for the detection of organic vapors using nanocrystalline TiO2 films

TitleImprovement of piezoelectric crystal sensor for the detection of organic vapors using nanocrystalline TiO2 films
Authors
Keywordsβ-Cyclodextrine
Nanocrystalline TiO2 films
Organic vapors
Piezoelectric quartz crystal sensor
Issue Date2005
PublisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/snb
Citation
Sensors And Actuators, B: Chemical, 2005, v. 108 n. 1-2 SPEC. ISS., p. 165-171 How to Cite?
AbstractNanocrystalline TiO2 films were used as substrate for the immobilization of β-cyclodextrine onto the electrode surface of the piezoelectric crystal. The sensing layer consisting of β-cyclodextrine and nanocrystalline TiO2 particles was characterized by XRD, IR spectroscopy and impedance analysis techniques. Due to the rigidity of the cast material, comparatively thick coatings could be used without a significant attenuation of the acoustic wave, and the porous morphology of the nanocrystalline TiO2 films yields a relatively fast response even for thick coatings. Piezoelectric gas sensors were successfully developed to detect organic vapors with detection limits down to 0.05 ppm. When the nanocrystalline TiO2 films were irradiated with UV lights, holes, and hydroxyl radicals were produced, which could oxidize and decompose organic materials. As fresh surface of porous TiO2 could be produced by irradiating UV light onto the β-cyclodextrine/TiO2 composite films, piezoelectric crystal sensors fabricated on porous TiO2 substrate were found to give reproducible results. The use of such coating for fabricating piezoelectric crystal chemical and biosensors leads to significant improvements in the sensor performance and a wide scope of application. © 2005 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/69389
ISSN
2015 Impact Factor: 4.758
2015 SCImago Journal Rankings: 1.305
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorSi, SHen_HK
dc.contributor.authorFung, YSen_HK
dc.contributor.authorZhu, DRen_HK
dc.date.accessioned2010-09-06T06:13:13Z-
dc.date.available2010-09-06T06:13:13Z-
dc.date.issued2005en_HK
dc.identifier.citationSensors And Actuators, B: Chemical, 2005, v. 108 n. 1-2 SPEC. ISS., p. 165-171en_HK
dc.identifier.issn0925-4005en_HK
dc.identifier.urihttp://hdl.handle.net/10722/69389-
dc.description.abstractNanocrystalline TiO2 films were used as substrate for the immobilization of β-cyclodextrine onto the electrode surface of the piezoelectric crystal. The sensing layer consisting of β-cyclodextrine and nanocrystalline TiO2 particles was characterized by XRD, IR spectroscopy and impedance analysis techniques. Due to the rigidity of the cast material, comparatively thick coatings could be used without a significant attenuation of the acoustic wave, and the porous morphology of the nanocrystalline TiO2 films yields a relatively fast response even for thick coatings. Piezoelectric gas sensors were successfully developed to detect organic vapors with detection limits down to 0.05 ppm. When the nanocrystalline TiO2 films were irradiated with UV lights, holes, and hydroxyl radicals were produced, which could oxidize and decompose organic materials. As fresh surface of porous TiO2 could be produced by irradiating UV light onto the β-cyclodextrine/TiO2 composite films, piezoelectric crystal sensors fabricated on porous TiO2 substrate were found to give reproducible results. The use of such coating for fabricating piezoelectric crystal chemical and biosensors leads to significant improvements in the sensor performance and a wide scope of application. © 2005 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/snben_HK
dc.relation.ispartofSensors and Actuators, B: Chemicalen_HK
dc.subjectβ-Cyclodextrineen_HK
dc.subjectNanocrystalline TiO2 filmsen_HK
dc.subjectOrganic vaporsen_HK
dc.subjectPiezoelectric quartz crystal sensoren_HK
dc.titleImprovement of piezoelectric crystal sensor for the detection of organic vapors using nanocrystalline TiO2 filmsen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0924-4247&volume=108&spage=165&epage=171&date=2005&atitle=Improvement+of+piezoelectric+crystal+sensor+for+the+detection+of+organic+vapors+using+nanocrystalline+TiO2+filmsen_HK
dc.identifier.emailFung, YS:ysfung@hku.hken_HK
dc.identifier.authorityFung, YS=rp00697en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.snb.2004.12.106en_HK
dc.identifier.scopuseid_2-s2.0-19744379449en_HK
dc.identifier.hkuros111382en_HK
dc.identifier.hkuros104144-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-19744379449&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume108en_HK
dc.identifier.issue1-2 SPEC. ISS.en_HK
dc.identifier.spage165en_HK
dc.identifier.epage171en_HK
dc.identifier.isiWOS:000230330300025-
dc.publisher.placeSwitzerlanden_HK
dc.identifier.scopusauthoridSi, SH=7006049232en_HK
dc.identifier.scopusauthoridFung, YS=13309754700en_HK
dc.identifier.scopusauthoridZhu, DR=7403599128en_HK

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