Non-solvolytic synthesis of aqueous soluble TiO2 nanoparticles and real-time dynamic measurements of the nanoparticle formation

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dc.contributor.author Chen, Lan
dc.contributor.author Rahme, Kamil
dc.contributor.author Holmes, Justin D.
dc.contributor.author Morris, Michael A.
dc.contributor.author Slater, Nigel K. H.
dc.date.accessioned 2016-02-25T17:37:13Z
dc.date.available 2016-02-25T17:37:13Z
dc.date.issued 2012-07-07
dc.identifier.citation CHEN, L., RAHME, K., HOLMES, J. D., MORRIS, M. A. & SLATER, N. K. H. 2012. Non-solvolytic synthesis of aqueous soluble TiO2 nanoparticles and real-time dynamic measurements of the nanoparticle formation. Nanoscale Research Letters, 7, 1-10. http://dx.doi.org/10.1186/1556-276X-7-297 en
dc.identifier.volume 7 en
dc.identifier.startpage 297 (1) en
dc.identifier.endpage 297 (10) en
dc.identifier.uri http://hdl.handle.net/10468/2406
dc.identifier.doi 10.1186/1556-276X-7-297
dc.description.abstract Highly aqueously dispersible (soluble) TiO2 nanoparticles are usually synthesized by a solution-based sol–gel (solvolysis/condensation) process, and no direct precipitation of titania has been reported. This paper proposes a new approach to synthesize stable TiO2 nanoparticles by a non-solvolytic method - direct liquid phase precipitation at room temperature. Ligand-capped TiO2 nanoparticles are more readily solubilized compared to uncapped TiO2 nanoparticles, and these capped materials show distinct optical absorbance/emission behaviors. The influence of ligands, way of reactant feeding, and post-treatment on the shape, size, crystalline structure, and surface chemistry of the TiO2 nanoparticles has been thoroughly investigated by the combined use of X-ray diffraction, transmission electron microscopy, UV-visible (UV–vis) spectroscopy, and photoluminescence (PL). It is found that all above variables have significant effects on the size, shape, and dispersivity of the final TiO2 nanoparticles. For the first time, real-time UV–vis spectroscopy and PL are used to dynamically detect the formation and growth of TiO2 nanoparticles in solution. These real-time measurements show that the precipitation process begins to nucleate after an initial inhibition period of about 1 h, thereafter a particle growth occurs and reaches the maximum point after 2 h. The synthesis reaction is essentially completed after 4 h. en
dc.description.sponsorship Science Foundation of Ireland (SFI BioNanoInteract Strategic Research Cluster grant (07/SRC/B1155)); European Commission (FP7 People Programme, Marie Curie Intra-European Fellowships grant) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Springer Open en
dc.rights © 2012 Chen et al.; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. en
dc.rights.uri http://​creativecommons.​org/​licenses/​by/​2.​0 en
dc.subject Synthesis en
dc.subject Nanoparticles en
dc.subject TiO2 en
dc.subject Aqueously soluble en
dc.subject Direct liquid phase precipitation en
dc.subject Dynamic real-time measurement en
dc.title Non-solvolytic synthesis of aqueous soluble TiO2 nanoparticles and real-time dynamic measurements of the nanoparticle formation en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Justin D. Holmes, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: j.holmes@ucc.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder European Commission en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Nanoscale Research Letters en
dc.internal.copyrightchecked !!CORA!! Springer Open Access Journal. "SpringerOpen allows the final version of all published research articles to be placed in any digital archive immediately on publication." http://www.springeropen.com/about/deposition-of-springeropen-articles-in-digital-repositories en
dc.internal.IRISemailaddress j.holmes@ucc.ie en


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© 2012 Chen et al.; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Except where otherwise noted, this item's license is described as © 2012 Chen et al.; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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