Li, Gao-Ren and Qu, Dun-Lin and Arurault, Laurent and Tong, Ye-Xiang Hierarchically Porous Gd3+-Doped CeO2 Nanostructures for the Remarkable Enhancement of Optical and Magnetic Properties. (2009) Journal of Physical Chemistry C, 113 (4). 1235-1241. ISSN 1932-7447
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(Document in English)
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Official URL: http://dx.doi.org/10.1021/jp804572t
Abstract
Rare earth ion-doped CeO2 has attracted more and more attention because of its special electrical, optical, magnetic, or catalytic properties. In this paper, a facile electrochemical deposition route was reported for the direct growth of the porous Gd-doped CeO2. The formation process of Gd-doped CeO2 composites was investigated. The obtained deposits were characterized by SEM, EDS, XRD, and XPS. The porous Gd3+- doped CeO2 (10 at% Gd) displays a typical type I adsorption isotherm and yields a large specific surface area of 135 m2/g. As Gd3+ ions were doped into CeO2 lattice, the absorption spectrum of Gd3+-doped CeO2 nanocrystals exhibited a red shift compared with porous CeO2 nanocrystals and bulk CeO2, and the luminescence of Gd3+-doped CeO2 deposits was remarkably enhanced due to the presence of more oxygen vacancies. In addition, the strong magnetic properties of Gd-doped CeO2 (10 at% Gd) were observed, which may be caused by Gd3+ ions or more oxygen defects in deposits. In addition, the catalytic activity of porous Gd-doped CeO2 toward CO oxidation was studied.
Item Type: | Article |
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Additional Information: | Thanks to American Chemical Society editor. The definitive version is available at http://pubs.acs.org/journal/jacsat The original PDF of the article can be found at The Journal of Physical Chemistry C website : http://pubs.acs.org/doi/abs/10.1021/jp804572thttp://www.sciencedirect.com/science/journal/00406031 |
Audience (journal): | International peer-reviewed journal |
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Institution: | French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) Other partners > Peking University (CHINA) Other partners > Sun Yat-sen University (CHINA) |
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Deposited On: | 15 Dec 2010 10:31 |
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