Copper Nanoparticles on the Surface
of Ultradispersed Polytetrafluoroethylene Nanograins

G. Yu. Yurkov*¹, D. A. Baranov*, A. V. Kozinkin**, T. I. Nedoseikina**,
Yu. A. Koksharov***, and S. P. Gubin*

* Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences,
Leninskii pr. 31, Moscow, 119991 Russia

** Research Institute of Physics, Rostov State University, pr. Stachki 194, Rostov-on-Don, 344104 Russia

*** Moscow State University, Vorob’evy gory, Moscow, 119992 Russia

Received February 8, 2004

Abstract—Nanosized copper-containing particles stabilized on the surface of polymer nanograins were
obtained by thermal decomposition of copper-containing precursors in a fluidized bed of ultradispersed poly-
tetrafluoroethylene. Transmission electron microscopy showed that the average size of nanoparticles is
1012nm. The structure of the particles was determined by EXAFS, EPR, and X-ray powder diffraction. The
copper nanoparticles consist of a core and a shell and are well structured. The core is copper metal, whereas the
surface layer, which constitutes no more than 2% of the nanoparticle weight, is copper oxide.

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