Show simple item record

dc.contributor.authorSmitha, V.
dc.contributor.authorPillai, S.
dc.contributor.authorSaraswathy Hareesh, U.
dc.contributor.authorNair, Balagopal
dc.contributor.authorWarrier, K.
dc.date.accessioned2017-01-30T10:54:13Z
dc.date.available2017-01-30T10:54:13Z
dc.date.created2016-11-21T19:30:22Z
dc.date.issued2014
dc.identifier.citationSmitha, V. and Pillai, S. and Saraswathy Hareesh, U. and Nair, B. and Warrier, K. 2014. Photoluminescent, self-cleaning titanium oxide nanocomposites with multifunctional properties. RSC Advances. 4 (106): pp. 61727-61735.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/6624
dc.identifier.doi10.1039/c4ra08910c
dc.description.abstract

© The Royal Society of Chemistry 2014.Photoluminescent and self-cleaning properties of an Eu<sup>3+</sup> doped titania-silica-lanthanum phosphate nanocomposite (Eu-TSL) prepared by an aqueous sol-gel process and films fabricated on glass substrates by dip coating are investigated in the present work. These nanocomposites containing Eu<sup>3+</sup> as dopants exhibit red luminescence upon visible light excitation, after heat treatment at 400°C. For an excitation wavelength of 465 nm, the PL spectra of Eu-TSL show intense peaks at 613 nm (<sup>5</sup>D<inf>0</inf>-<sup>7</sup>F<inf>2</inf>), characteristic of Eu<sup>3+</sup> ions. This red emission has a life time of ~0.5 ms. 1 mol% Eu added TSL shows ~96% methylene blue dye degradation after two hours UV light exposure which is attributed to the presence of anatase phase, optimum crystallite size (5.7 nm) and enhanced specific surface area (147 m<sup>2</sup> g<sup>-1</sup>). Eu-TSL was found to be five times more efficient in decolourization of methylene blue than Eu-TiO<inf>2</inf> from the reported literature. Eu-TSL retains all the major properties including photoactivity, transparency (~97%) and low wettability (~80°). In addition, red emission could be integrated at very low europium doping levels (1 mol%). Even though europium doping on titania is reported widely, a multifunctional luminescent and self-cleaning composition based on Eu-TSL synthesized by an aqueous sol-gel route is reported for the first time.

dc.publisherRoyal Society of Chemistry
dc.titlePhotoluminescent, self-cleaning titanium oxide nanocomposites with multifunctional properties
dc.typeJournal Article
dcterms.source.volume4
dcterms.source.number106
dcterms.source.startPage61727
dcterms.source.endPage61735
dcterms.source.titleRSC Advances
curtin.departmentNanochemistry Research Institute
curtin.accessStatusFulltext not available


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record