Synthesis and properties of nearly single-shell nickel clusters in amorphous aluminium oxides

被引:9
作者
Tillement, O [1 ]
Illy-Cherrey, S
Dubois, JM
Begin-Colin, S
Massicot, F
Schneider, R
Fort, Y
Ghanbaja, J
Bellouard, C
Belin-Ferre, E
机构
[1] Ecole Mines, Sci & Genie Mat Met Lab, CNRS, UMR 7584, F-54042 Nancy, France
[2] Univ Nancy 1, CNRS, UMR 7565, F-54056 Vandoeuvre Les Nancy, France
[3] Univ Nancy 1, Serv Commun Microscopie Elect Transmiss, F-54056 Vandoeuvre Les Nancy, France
[4] Univ Nancy 1, Inst Natl Polytech Lorraine, Lab Phys Solide, CNRS,UMR 7556, F-54056 Vandoeuvre Les Nancy, France
[5] Univ Paris 06, Lab Chim Phys Mat & Rayonnement, CNRS, UMR 7614, F-75231 Paris 5, France
来源
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 2002年 / 82卷 / 05期
关键词
D O I
10.1080/01418610110095689
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We introduce a new method for the synthesis of Al-Ni nanosized particles. After partial oxidation, this technique is able to produce ultrafine sub-nanometric nickel clusters dispersed with an amorphous aluminium oxide. Such clusters consist of about 15 nickel atoms which exhibit discrete electronic energy levels and superparamagnetism. A very significant enhancement of the catalytic properties is observed. We expect that division of metals down to such a reduced scale will lead us to new properties and to a technological breakthrough since upscaling this method to industrial production rate is straightforward.
引用
收藏
页码:913 / 923
页数:11
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