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dc.contributor.author Tshabalala, Zamaswazi P
dc.contributor.author Motaung, David E
dc.contributor.author Mhlongo, Gugu H
dc.contributor.author Ntwaeborwa, OM
dc.date.accessioned 2017-07-28T09:10:45Z
dc.date.available 2017-07-28T09:10:45Z
dc.date.issued 2016-03
dc.identifier.citation Tshabalala, ZP, Motaung, DE, Mhlongo, GH. and Ntwaeborwa, OM. 2016. Facile synthesis of improved room temperature gas sensing properties of TiO2 nanostructures: Effect of acid treatment. Sensors and Actuators B: Chemical, 224, pp 841–856 en_US
dc.identifier.issn 0925-4005
dc.identifier.uri http://hdl.handle.net/10204/9382
dc.description Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website. The definitive version of the work is published in Sensors and Actuators B: Chemical, 224, pp 841–856 en_US
dc.description.abstract TiO(sub2) nanoparticles were synthesized via a simple hydrothermal method in a sodium hydroxide (NaOH) aqueous solution and washed with distilled water and different concentrations of hydrochloric acid which acted as the morphological/crystallographic controlling agent. Microscopy analysis showed that the size of the TiO(sub2) nanoparticles could be easily tailored and tuned by varying the HCl concentration. The phase transformation from a mixture of anatase and rutile phases to pure anatase phase was observed at higher HCl concentration. The particle sizes were reduced while the Brunauer–Emmett–Teller surface area increased when increasing the HCl concentration, thus resulting in higher sensing response and selectivity to NO(sub2) at room temperature. The X-ray photoelectron spectroscopy, photoluminescence and electron paramagnetic resonance studies also revealed that the 1.0 M sample contain high relative concentration of oxygen vacancy and Ti(sup4+) and Ti(sup3+) interstitial defect states which played a vital role modulating the sensing properties. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries workflow;18684
dc.subject Gas sensing en_US
dc.subject Morphology en_US
dc.title Facile synthesis of improved room temperature gas sensing properties of TiO2 nanostructures: Effect of acid treatment en_US
dc.type Article en_US


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