Journal
CARBON
Volume 47, Issue 5, Pages 1214-1219Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2008.12.044
Keywords
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Funding
- Open Fund of Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences
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ZnO quantum dots (QDs) are anchored on multi-walled carbon nanotubes (MWCNTs) by a wet chemical self-assembling technique. The structure and properties of QDs/MWCNTs are also studied in detail. First, MWCNTs are functionalized with thiol by a series of chemical reactions. Fourier transform infrared spectroscopy is used to verify changes of chemical bonds on MWCNTs. At one time, quantum dots of ZnO alcogel are prepared by a sol-gel process. Finally, the functionalized MWCNTs (f-MWCNTs) are added into ZnO alcogels under ultrasonic condition or being magnetically stir-red, and ZnO QDs/f-MWCNT composite is obtained by a self-assembling technique. A typical transmission electron microscopy image of the as-received ZnO QDs/f-MWCNT composite reveals that monodispersed ZnO QDs are anchored stably on functionalized MWCNTs. Moreover, photoluminescence spectrum and current-voltage curves display the special optoelectronic properties of this ZnO QDs/f-MWCNT hybrid. Crown Copyright (C) 2008 Published by Elsevier Ltd. All rights reserved.
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