Large-scale synthesis and gas sensing application of vertically aligned and double-sided tungsten oxide nanorod arrays

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dc.contributor.author Shen, X
dc.contributor.author Wang, G
dc.contributor.author Wexler, D
dc.date.accessioned 2011-02-07T06:18:53Z
dc.date.issued 2009-01
dc.identifier.citation Sensors and Actuators B: Chemical, 2009, 143 (1), pp. 325 - 332
dc.identifier.issn 0925-4005
dc.identifier.other C1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/13112
dc.description.abstract Large-scale vertically aligned and double-sided Co-doped hexagonal tungsten oxide nanorod arrays have been successfully synthesized by a facile hydrothermal method without using any template, catalyst, or substrate. Scanning electron microscopy and transmission electron microscopy analyses reveal an interesting three-order hierarchical nanostructure from small, single-crystalline nanorods via nanorod bundles to double-sided nanorod arrays. The optical absorption properties of the Co-doped WO3 samples were investigated by ultravioletvisible spectroscopy, and the results indicate that the Co-doped WO3 nanostructures are semiconducting with direct band gaps of 2.26 eV and 2.77 eV. The gas sensing performance of the as-prepared Co-doped WO3 double-sided nanorod arrays was tested towards a series of typical organic solvents and fuels. The sample shows excellent gas sensing performance towards 1-butanol vapor, with rapid response and high sensitivity. We propose that the double-sided nanorod arrays are formed from urchin-like microspheres via a self-assembly and fusion process. This new synthesis strategy could be extended to prepare other well-aligned nanorod arrays for many functional applications.
dc.publisher Elsevier SA
dc.relation.isbasedon 10.1016/j.snb.2009.09.015
dc.title Large-scale synthesis and gas sensing application of vertically aligned and double-sided tungsten oxide nanorod arrays
dc.type Journal Article
dc.parent Sensors and Actuators B: Chemical
dc.journal.volume 1
dc.journal.volume 143
dc.journal.number 1 en_US
dc.publocation Switzerland en_US
dc.identifier.startpage 325 en_US
dc.identifier.endpage 332 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 0912 Materials Engineering
dc.for 0301 Analytical Chemistry
dc.personcode 109499
dc.percentage 50 en_US
dc.classification.name Analytical Chemistry en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
dc.description.keywords Tungsten oxide
dc.description.keywords Nanorod arrays
dc.description.keywords Hydrothermal synthesis
dc.description.keywords Gas sensing
dc.description.keywords Sens
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Strength - Materials and Technology for Energy Efficiency
utslib.copyright.status Closed Access
utslib.copyright.date 2015-04-15 12:17:09.805752+10
pubs.consider-herdc false
utslib.collection.history Closed (ID: 3)
utslib.collection.history School of Chemistry and Forensic Science (ID: 339)
utslib.collection.history School of Chemistry and Forensic Science (ID: 339)


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