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Article: A hydrogen/methane sensor based on niobium tungsten oxide nanorods synthesised by hydrothermal method

TitleA hydrogen/methane sensor based on niobium tungsten oxide nanorods synthesised by hydrothermal method
Authors
KeywordsNiobium oxide
Tungsten oxide
Nanorods
Hydrogen
Methane
Sensor
Issue Date2013
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/snb
Citation
Sensors and Actuators B: Chemical, 2013, v. 184, p. 118-129 How to Cite?
AbstractAn investigation on hydrogen and methane sensing performance of hydrothermally formed niobium tungsten oxide nanorods employed in a Schottky diode structure is presented herein. By implementing tungsten into the surface of the niobium lattice, we create Nb5+ and W5+ oxide states and an abundant number of surface traps, which can collect and hold the adsorbate charge to reinforce a greater bending of the energy bands at the metal/oxide interface. We show experimentally, that extremely large voltage shifts can be achieved by these nanorods under exposure to gas at both room and high temperatures and attribute this to the strong accumulation of the dipolar charges at the interface via the surface traps. Thus, our results demonstrate that niobium tungsten oxide nanorods can be implemented for gas sensing applications, showing ultra-high sensitivities.
Persistent Identifierhttp://hdl.handle.net/10722/183733
ISSN
2017 Impact Factor: 5.667
2015 SCImago Journal Rankings: 1.305
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYu, JCW-
dc.contributor.authorWen, H-
dc.contributor.authorShafiei, M-
dc.contributor.authorField, MR-
dc.contributor.authorLiu, ZF-
dc.contributor.authorWlodarski, W-
dc.contributor.authorMotta, N-
dc.contributor.authorLi, YX-
dc.contributor.authorKalantar-zadeh, K-
dc.contributor.authorLai, PT-
dc.date.accessioned2013-06-18T04:10:54Z-
dc.date.available2013-06-18T04:10:54Z-
dc.date.issued2013-
dc.identifier.citationSensors and Actuators B: Chemical, 2013, v. 184, p. 118-129-
dc.identifier.issn0925-4005-
dc.identifier.urihttp://hdl.handle.net/10722/183733-
dc.description.abstractAn investigation on hydrogen and methane sensing performance of hydrothermally formed niobium tungsten oxide nanorods employed in a Schottky diode structure is presented herein. By implementing tungsten into the surface of the niobium lattice, we create Nb5+ and W5+ oxide states and an abundant number of surface traps, which can collect and hold the adsorbate charge to reinforce a greater bending of the energy bands at the metal/oxide interface. We show experimentally, that extremely large voltage shifts can be achieved by these nanorods under exposure to gas at both room and high temperatures and attribute this to the strong accumulation of the dipolar charges at the interface via the surface traps. Thus, our results demonstrate that niobium tungsten oxide nanorods can be implemented for gas sensing applications, showing ultra-high sensitivities.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/snb-
dc.relation.ispartofSensors and Actuators B: Chemical-
dc.subjectNiobium oxide-
dc.subjectTungsten oxide-
dc.subjectNanorods-
dc.subjectHydrogen-
dc.subjectMethane-
dc.subjectSensor-
dc.titleA hydrogen/methane sensor based on niobium tungsten oxide nanorods synthesised by hydrothermal method-
dc.typeArticle-
dc.identifier.emailYu, JCW: jcwyu@hku.hk-
dc.identifier.emailLai, PT: laip@eee.hku.hk-
dc.identifier.authorityLai, PT=rp00130-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.snb.2013.03.135-
dc.identifier.scopuseid_2-s2.0-84877872782-
dc.identifier.hkuros214588-
dc.identifier.volume184-
dc.identifier.spage118-
dc.identifier.epage129-
dc.identifier.isiWOS:000319869700018-
dc.publisher.placeNetherlands-

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