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dc.contributor.authorLu, Na
dc.contributor.authorYang, Chao
dc.contributor.authorLiu, Porun
dc.contributor.authorSu, Xintai
dc.date.accessioned2020-05-29T00:30:45Z
dc.date.available2020-05-29T00:30:45Z
dc.date.issued2019
dc.identifier.issn0021-9797
dc.identifier.doi10.1016/j.jcis.2019.09.030
dc.identifier.urihttp://hdl.handle.net/10072/394215
dc.description.abstractUltrafine WO3−x (0 < x < 1) nanowires with aspect ratio greater than 100 were successfully synthesized by two-phase strategy. The crystal structure, morphology evolution and thermal stability of the samples were characterized by X-ray diffractometer (XRD), X-ray photoelectron spectrum (XPS), high resolution transmission electron microscopy (HRTEM), and thermal gravimetric analysis (TGA). The morphology of WO3−x nanowires is closely related to the pH value and oleamine content of the reaction system. By controlling the reaction conditions, a linear product with a diameter of less than 2 nm can be obtained, and the exposed active lattice plane is 110 crystal face. On this basis, the prepared ultrafine WO3−x nanowire sensor was tested for a series of harmful gases. The sensitivity of WO3−x-based gas sensors can reach 57.9 for 10 ppm NO2 at 100 °C, which is much higher than most reported values. The sensor has the excellent sensing performance of ppm NO2 at low operating temperature, which is due to its nanowire structure and oxygen vacancies. These results demonstrate that this type of sensor is a competitive candidate for NO2-sensing applications.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom311
dc.relation.ispartofpageto317
dc.relation.ispartofjournalJournal of Colloid and Interface Science
dc.relation.ispartofvolume557
dc.subject.fieldofresearchPhysical Sciences
dc.subject.fieldofresearchChemical Sciences
dc.subject.fieldofresearchEngineering
dc.subject.fieldofresearchcode02
dc.subject.fieldofresearchcode03
dc.subject.fieldofresearchcode09
dc.subject.keywordsScience & Technology
dc.subject.keywordsChemistry, Physical
dc.subject.keywordsChemistry
dc.subject.keywordsTwo-phase strategy
dc.titlePreparation of 2 nm tungsten oxide nanowires based on two-phase strategy and their ultra-sensitive NO2 gas sensing properties
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationLu, N; Yang, C; Liu, P; Su, X, Preparation of 2 nm tungsten oxide nanowires based on two-phase strategy and their ultra-sensitive NO2 gas sensing properties, Journal of Colloid and Interface Science, 2019, 557, pp. 311-317
dcterms.dateAccepted2019-09-09
dc.date.updated2020-05-29T00:29:09Z
gro.hasfulltextNo Full Text
gro.griffith.authorLiu, Porun


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