dc.contributor.author |
Tshabalala, Zamaswazi P
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|
dc.contributor.author |
Motaung, David E
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|
dc.contributor.author |
Mhlongo, Gugu H
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|
dc.contributor.author |
Ntwaeborwa, OM
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|
dc.date.accessioned |
2017-07-28T09:10:45Z |
|
dc.date.available |
2017-07-28T09:10:45Z |
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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
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|
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 |
dc.identifier.apacitation |
Tshabalala, Z. P., Motaung, D. E., Mhlongo, G. H., & Ntwaeborwa, O. (2016). Facile synthesis of improved room temperature gas sensing properties of TiO2 nanostructures: Effect of acid treatment. http://hdl.handle.net/10204/9382 |
en_ZA |
dc.identifier.chicagocitation |
Tshabalala, Zamaswazi P, David E Motaung, Gugu H Mhlongo, and OM Ntwaeborwa "Facile synthesis of improved room temperature gas sensing properties of TiO2 nanostructures: Effect of acid treatment." (2016) http://hdl.handle.net/10204/9382 |
en_ZA |
dc.identifier.vancouvercitation |
Tshabalala ZP, Motaung DE, Mhlongo GH, Ntwaeborwa O. Facile synthesis of improved room temperature gas sensing properties of TiO2 nanostructures: Effect of acid treatment. 2016; http://hdl.handle.net/10204/9382. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Tshabalala, Zamaswazi P
AU - Motaung, David E
AU - Mhlongo, Gugu H
AU - Ntwaeborwa, OM
AB - 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.
DA - 2016-03
DB - ResearchSpace
DP - CSIR
KW - Gas sensing
KW - Morphology
LK - https://researchspace.csir.co.za
PY - 2016
SM - 0925-4005
T1 - Facile synthesis of improved room temperature gas sensing properties of TiO2 nanostructures: Effect of acid treatment
TI - Facile synthesis of improved room temperature gas sensing properties of TiO2 nanostructures: Effect of acid treatment
UR - http://hdl.handle.net/10204/9382
ER -
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en_ZA |