Preparation and characterization of titania/ZnS core-shell nanotubes

Core-shell nanocomposites of titania nanotubes/ZnS quantum dots have been prepared by using a hydrothermal synthetic method and characterized by using various microscopic and spectroscopic methods. ZnS quantum dots surround the outsides of titania nanotubes having the inner and the outer diameters o...

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Bibliographic Details
Published in:	Journal of nanoscience and nanotechnology Vol. 6; no. 1; p. 180
Main Authors:	Kim, Mee Rahn, Ahn, Shin Ja, Jang, Du-Jeon
Format:	Journal Article
Language:	English
Published:	United States 01-01-2006
Subjects:	Kinetics Luminescence Microscopy, Electron Nanostructures - chemistry Sulfides - chemistry Titanium - chemistry X-Ray Diffraction Zinc Compounds - chemistry
Online Access:	Get more information
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Summary:	Core-shell nanocomposites of titania nanotubes/ZnS quantum dots have been prepared by using a hydrothermal synthetic method and characterized by using various microscopic and spectroscopic methods. ZnS quantum dots surround the outsides of titania nanotubes having the inner and the outer diameters of 15 and 30 nm, respectively, with a thickness of 2 nm. The nanocomposites suspended in water show a broader absorption spectrum shifted to a longer wavelength by 20 nm and emit substantially stronger ZnS luminescence having significantly slower decay kinetics than bare ZnS nanoparticles in water. The support of TiO2 nanotubes is found to enhance the optical properties of ZnS considerably.
ISSN:	1533-4880
DOI:	10.1166/jnn.2006.17926